diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2003-09-08 11:26:21 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2003-09-08 11:26:21 +0000 |
| commit | c7a55143b4be769fd2baf3255965361bb8183bfe (patch) | |
| tree | 5d397130ae9beea595db0733050a25e5d810ef78 /gdb/sh64-tdep.c | |
| parent | 3907f286b089a7de870fae9332d0ab39bb672359 (diff) | |
| download | gdb-c7a55143b4be769fd2baf3255965361bb8183bfe.tar.gz | |
* Makefile.in (ALLDEPFILES): Add sh64-tdep.c.
(sh64-tdep.o): Add dependencies.
* configure.tgt: Add FIXME to sh-*-linux*.
* sh-tdep.c: Move sh64 support to sh64-tdep.c.
(sh_gdbarch_init): Always set correct sh_show_regs function
pointer. Call sh64_gdbarch_init() if machine type is sh5.
* sh-tdep.h: Move sh64 support to sh64-tdep.c.
* sh64-tdep.c: New file, containing all sh64 related code from
sh-tdep.c.
* config/sh/embed.mt (TDEPFILES): Add sh64-tdep.o.
* config/sh/linux.mt (TDEPFILES): Ditto.
* config/sh/nbsd.mt (TDEPFILES): Ditto.
* config/sh/tm-sh.h: Drop REGISTER_TYPE definition.
* config/sh/wince.mt (TDEPFILES): Ditto.
Diffstat (limited to 'gdb/sh64-tdep.c')
| -rw-r--r-- | gdb/sh64-tdep.c | 2949 |
1 files changed, 2949 insertions, 0 deletions
diff --git a/gdb/sh64-tdep.c b/gdb/sh64-tdep.c new file mode 100644 index 00000000000..eab0e7e6f4f --- /dev/null +++ b/gdb/sh64-tdep.c @@ -0,0 +1,2949 @@ +/* Target-dependent code for Hitachi Super-H, for GDB. + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 + Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + Contributed by Steve Chamberlain + sac@cygnus.com + */ + +#include "defs.h" +#include "frame.h" +#include "symtab.h" +#include "symfile.h" +#include "gdbtypes.h" +#include "gdbcmd.h" +#include "gdbcore.h" +#include "value.h" +#include "dis-asm.h" +#include "inferior.h" +#include "gdb_string.h" +#include "arch-utils.h" +#include "floatformat.h" +#include "regcache.h" +#include "doublest.h" +#include "osabi.h" + +#include "elf-bfd.h" +#include "solib-svr4.h" + +/* sh flags */ +#include "elf/sh.h" +/* registers numbers shared with the simulator */ +#include "gdb/sim-sh.h" + +/* Information that is dependent on the processor variant. */ +enum sh_abi + { + SH_ABI_UNKNOWN, + SH_ABI_32, + SH_ABI_64 + }; + +struct gdbarch_tdep + { + enum sh_abi sh_abi; + }; + +/* Registers of SH5 */ +enum + { + R0_REGNUM = 0, + DEFAULT_RETURN_REGNUM = 2, + STRUCT_RETURN_REGNUM = 2, + ARG0_REGNUM = 2, + ARGLAST_REGNUM = 9, + FLOAT_ARGLAST_REGNUM = 11, + PR_REGNUM = 18, + SR_REGNUM = 65, + DR0_REGNUM = 141, + DR_LAST_REGNUM = 172, + /* FPP stands for Floating Point Pair, to avoid confusion with + GDB's FP0_REGNUM, which is the number of the first Floating + point register. Unfortunately on the sh5, the floating point + registers are called FR, and the floating point pairs are called FP. */ + FPP0_REGNUM = 173, + FPP_LAST_REGNUM = 204, + FV0_REGNUM = 205, + FV_LAST_REGNUM = 220, + R0_C_REGNUM = 221, + R_LAST_C_REGNUM = 236, + PC_C_REGNUM = 237, + GBR_C_REGNUM = 238, + MACH_C_REGNUM = 239, + MACL_C_REGNUM = 240, + PR_C_REGNUM = 241, + T_C_REGNUM = 242, + FPSCR_C_REGNUM = 243, + FPUL_C_REGNUM = 244, + FP0_C_REGNUM = 245, + FP_LAST_C_REGNUM = 260, + DR0_C_REGNUM = 261, + DR_LAST_C_REGNUM = 268, + FV0_C_REGNUM = 269, + FV_LAST_C_REGNUM = 272, + FPSCR_REGNUM = SIM_SH64_FPCSR_REGNUM, + SSR_REGNUM = SIM_SH64_SSR_REGNUM, + SPC_REGNUM = SIM_SH64_SPC_REGNUM, + TR7_REGNUM = SIM_SH64_TR0_REGNUM + 7, + FP_LAST_REGNUM = SIM_SH64_FR0_REGNUM + SIM_SH64_NR_FP_REGS - 1 + }; + + +/* Define other aspects of the stack frame. + we keep a copy of the worked out return pc lying around, since it + is a useful bit of info */ + +struct frame_extra_info +{ + CORE_ADDR return_pc; + int leaf_function; + int f_offset; +}; + +static const char * +sh_sh64_register_name (int reg_nr) +{ + static char *register_names[] = + { + /* SH MEDIA MODE (ISA 32) */ + /* general registers (64-bit) 0-63 */ + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", + "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", + "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", + "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", + "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", + + /* pc (64-bit) 64 */ + "pc", + + /* status reg., saved status reg., saved pc reg. (64-bit) 65-67 */ + "sr", "ssr", "spc", + + /* target registers (64-bit) 68-75*/ + "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", + + /* floating point state control register (32-bit) 76 */ + "fpscr", + + /* single precision floating point registers (32-bit) 77-140*/ + "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", + "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", + "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", + "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", + "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", + "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", + "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", + "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", + + /* double precision registers (pseudo) 141-172 */ + "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", + "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30", + "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46", + "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62", + + /* floating point pairs (pseudo) 173-204*/ + "fp0", "fp2", "fp4", "fp6", "fp8", "fp10", "fp12", "fp14", + "fp16", "fp18", "fp20", "fp22", "fp24", "fp26", "fp28", "fp30", + "fp32", "fp34", "fp36", "fp38", "fp40", "fp42", "fp44", "fp46", + "fp48", "fp50", "fp52", "fp54", "fp56", "fp58", "fp60", "fp62", + + /* floating point vectors (4 floating point regs) (pseudo) 205-220*/ + "fv0", "fv4", "fv8", "fv12", "fv16", "fv20", "fv24", "fv28", + "fv32", "fv36", "fv40", "fv44", "fv48", "fv52", "fv56", "fv60", + + /* SH COMPACT MODE (ISA 16) (all pseudo) 221-272*/ + "r0_c", "r1_c", "r2_c", "r3_c", "r4_c", "r5_c", "r6_c", "r7_c", + "r8_c", "r9_c", "r10_c", "r11_c", "r12_c", "r13_c", "r14_c", "r15_c", + "pc_c", + "gbr_c", "mach_c", "macl_c", "pr_c", "t_c", + "fpscr_c", "fpul_c", + "fr0_c", "fr1_c", "fr2_c", "fr3_c", "fr4_c", "fr5_c", "fr6_c", "fr7_c", + "fr8_c", "fr9_c", "fr10_c", "fr11_c", "fr12_c", "fr13_c", "fr14_c", "fr15_c", + "dr0_c", "dr2_c", "dr4_c", "dr6_c", "dr8_c", "dr10_c", "dr12_c", "dr14_c", + "fv0_c", "fv4_c", "fv8_c", "fv12_c", + /* FIXME!!!! XF0 XF15, XD0 XD14 ?????*/ + }; + + if (reg_nr < 0) + return NULL; + if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) + return NULL; + return register_names[reg_nr]; +} + +#define NUM_PSEUDO_REGS_SH_MEDIA 80 +#define NUM_PSEUDO_REGS_SH_COMPACT 51 + +/* Macros and functions for setting and testing a bit in a minimal + symbol that marks it as 32-bit function. The MSB of the minimal + symbol's "info" field is used for this purpose. This field is + already being used to store the symbol size, so the assumption is + that the symbol size cannot exceed 2^31. + + ELF_MAKE_MSYMBOL_SPECIAL + tests whether an ELF symbol is "special", i.e. refers + to a 32-bit function, and sets a "special" bit in a + minimal symbol to mark it as a 32-bit function + MSYMBOL_IS_SPECIAL tests the "special" bit in a minimal symbol + MSYMBOL_SIZE returns the size of the minimal symbol, i.e. + the "info" field with the "special" bit masked out */ + +#define MSYMBOL_IS_SPECIAL(msym) \ + (((long) MSYMBOL_INFO (msym) & 0x80000000) != 0) + +static void +sh64_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) +{ + if (msym == NULL) + return; + + if (((elf_symbol_type *)(sym))->internal_elf_sym.st_other == STO_SH5_ISA32) + { + MSYMBOL_INFO (msym) = (char *) (((long) MSYMBOL_INFO (msym)) | 0x80000000); + SYMBOL_VALUE_ADDRESS (msym) |= 1; + } +} + +/* ISA32 (shmedia) function addresses are odd (bit 0 is set). Here + are some macros to test, set, or clear bit 0 of addresses. */ +#define IS_ISA32_ADDR(addr) ((addr) & 1) +#define MAKE_ISA32_ADDR(addr) ((addr) | 1) +#define UNMAKE_ISA32_ADDR(addr) ((addr) & ~1) + +static int +pc_is_isa32 (bfd_vma memaddr) +{ + struct minimal_symbol *sym; + + /* If bit 0 of the address is set, assume this is a + ISA32 (shmedia) address. */ + if (IS_ISA32_ADDR (memaddr)) + return 1; + + /* A flag indicating that this is a ISA32 function is stored by elfread.c in + the high bit of the info field. Use this to decide if the function is + ISA16 or ISA32. */ + sym = lookup_minimal_symbol_by_pc (memaddr); + if (sym) + return MSYMBOL_IS_SPECIAL (sym); + else + return 0; +} + +static const unsigned char * +sh_sh64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) +{ + /* The BRK instruction for shmedia is + 01101111 11110101 11111111 11110000 + which translates in big endian mode to 0x6f, 0xf5, 0xff, 0xf0 + and in little endian mode to 0xf0, 0xff, 0xf5, 0x6f */ + + /* The BRK instruction for shcompact is + 00000000 00111011 + which translates in big endian mode to 0x0, 0x3b + and in little endian mode to 0x3b, 0x0*/ + + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + { + if (pc_is_isa32 (*pcptr)) + { + static unsigned char big_breakpoint_media[] = {0x6f, 0xf5, 0xff, 0xf0}; + *pcptr = UNMAKE_ISA32_ADDR (*pcptr); + *lenptr = sizeof (big_breakpoint_media); + return big_breakpoint_media; + } + else + { + static unsigned char big_breakpoint_compact[] = {0x0, 0x3b}; + *lenptr = sizeof (big_breakpoint_compact); + return big_breakpoint_compact; + } + } + else + { + if (pc_is_isa32 (*pcptr)) + { + static unsigned char little_breakpoint_media[] = {0xf0, 0xff, 0xf5, 0x6f}; + *pcptr = UNMAKE_ISA32_ADDR (*pcptr); + *lenptr = sizeof (little_breakpoint_media); + return little_breakpoint_media; + } + else + { + static unsigned char little_breakpoint_compact[] = {0x3b, 0x0}; + *lenptr = sizeof (little_breakpoint_compact); + return little_breakpoint_compact; + } + } +} + +/* Prologue looks like + [mov.l <regs>,@-r15]... + [sts.l pr,@-r15] + [mov.l r14,@-r15] + [mov r15,r14] + + Actually it can be more complicated than this. For instance, with + newer gcc's: + + mov.l r14,@-r15 + add #-12,r15 + mov r15,r14 + mov r4,r1 + mov r5,r2 + mov.l r6,@(4,r14) + mov.l r7,@(8,r14) + mov.b r1,@r14 + mov r14,r1 + mov r14,r1 + add #2,r1 + mov.w r2,@r1 + + */ + +/* PTABS/L Rn, TRa 0110101111110001nnnnnnl00aaa0000 + with l=1 and n = 18 0110101111110001010010100aaa0000 */ +#define IS_PTABSL_R18(x) (((x) & 0xffffff8f) == 0x6bf14a00) + +/* STS.L PR,@-r0 0100000000100010 + r0-4-->r0, PR-->(r0) */ +#define IS_STS_R0(x) ((x) == 0x4022) + +/* STS PR, Rm 0000mmmm00101010 + PR-->Rm */ +#define IS_STS_PR(x) (((x) & 0xf0ff) == 0x2a) + +/* MOV.L Rm,@(disp,r15) 00011111mmmmdddd + Rm-->(dispx4+r15) */ +#define IS_MOV_TO_R15(x) (((x) & 0xff00) == 0x1f00) + +/* MOV.L R14,@(disp,r15) 000111111110dddd + R14-->(dispx4+r15) */ +#define IS_MOV_R14(x) (((x) & 0xfff0) == 0x1fe0) + +/* ST.Q R14, disp, R18 101011001110dddddddddd0100100000 + R18-->(dispx8+R14) */ +#define IS_STQ_R18_R14(x) (((x) & 0xfff003ff) == 0xace00120) + +/* ST.Q R15, disp, R18 101011001111dddddddddd0100100000 + R18-->(dispx8+R15) */ +#define IS_STQ_R18_R15(x) (((x) & 0xfff003ff) == 0xacf00120) + +/* ST.L R15, disp, R18 101010001111dddddddddd0100100000 + R18-->(dispx4+R15) */ +#define IS_STL_R18_R15(x) (((x) & 0xfff003ff) == 0xa8f00120) + +/* ST.Q R15, disp, R14 1010 1100 1111 dddd dddd dd00 1110 0000 + R14-->(dispx8+R15) */ +#define IS_STQ_R14_R15(x) (((x) & 0xfff003ff) == 0xacf000e0) + +/* ST.L R15, disp, R14 1010 1000 1111 dddd dddd dd00 1110 0000 + R14-->(dispx4+R15) */ +#define IS_STL_R14_R15(x) (((x) & 0xfff003ff) == 0xa8f000e0) + +/* ADDI.L R15,imm,R15 1101 0100 1111 ssss ssss ss00 1111 0000 + R15 + imm --> R15 */ +#define IS_ADDIL_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd4f000f0) + +/* ADDI R15,imm,R15 1101 0000 1111 ssss ssss ss00 1111 0000 + R15 + imm --> R15 */ +#define IS_ADDI_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd0f000f0) + +/* ADD.L R15,R63,R14 0000 0000 1111 1000 1111 1100 1110 0000 + R15 + R63 --> R14 */ +#define IS_ADDL_SP_FP_MEDIA(x) ((x) == 0x00f8fce0) + +/* ADD R15,R63,R14 0000 0000 1111 1001 1111 1100 1110 0000 + R15 + R63 --> R14 */ +#define IS_ADD_SP_FP_MEDIA(x) ((x) == 0x00f9fce0) + +#define IS_MOV_SP_FP_MEDIA(x) (IS_ADDL_SP_FP_MEDIA(x) || IS_ADD_SP_FP_MEDIA(x)) + +/* MOV #imm, R0 1110 0000 ssss ssss + #imm-->R0 */ +#define IS_MOV_R0(x) (((x) & 0xff00) == 0xe000) + +/* MOV.L @(disp,PC), R0 1101 0000 iiii iiii */ +#define IS_MOVL_R0(x) (((x) & 0xff00) == 0xd000) + +/* ADD r15,r0 0011 0000 1111 1100 + r15+r0-->r0 */ +#define IS_ADD_SP_R0(x) ((x) == 0x30fc) + +/* MOV.L R14 @-R0 0010 0000 1110 0110 + R14-->(R0-4), R0-4-->R0 */ +#define IS_MOV_R14_R0(x) ((x) == 0x20e6) + +/* ADD Rm,R63,Rn Rm+R63-->Rn 0000 00mm mmmm 1001 1111 11nn nnnn 0000 + where Rm is one of r2-r9 which are the argument registers. */ +/* FIXME: Recognize the float and double register moves too! */ +#define IS_MEDIA_IND_ARG_MOV(x) \ +((((x) & 0xfc0ffc0f) == 0x0009fc00) && (((x) & 0x03f00000) >= 0x00200000 && ((x) & 0x03f00000) <= 0x00900000)) + +/* ST.Q Rn,0,Rm Rm-->Rn+0 1010 11nn nnnn 0000 0000 00mm mmmm 0000 + or ST.L Rn,0,Rm Rm-->Rn+0 1010 10nn nnnn 0000 0000 00mm mmmm 0000 + where Rm is one of r2-r9 which are the argument registers. */ +#define IS_MEDIA_ARG_MOV(x) \ +(((((x) & 0xfc0ffc0f) == 0xac000000) || (((x) & 0xfc0ffc0f) == 0xa8000000)) \ + && (((x) & 0x000003f0) >= 0x00000020 && ((x) & 0x000003f0) <= 0x00000090)) + +/* ST.B R14,0,Rn Rn-->(R14+0) 1010 0000 1110 0000 0000 00nn nnnn 0000*/ +/* ST.W R14,0,Rn Rn-->(R14+0) 1010 0100 1110 0000 0000 00nn nnnn 0000*/ +/* ST.L R14,0,Rn Rn-->(R14+0) 1010 1000 1110 0000 0000 00nn nnnn 0000*/ +/* FST.S R14,0,FRn Rn-->(R14+0) 1011 0100 1110 0000 0000 00nn nnnn 0000*/ +/* FST.D R14,0,DRn Rn-->(R14+0) 1011 1100 1110 0000 0000 00nn nnnn 0000*/ +#define IS_MEDIA_MOV_TO_R14(x) \ +((((x) & 0xfffffc0f) == 0xa0e00000) \ +|| (((x) & 0xfffffc0f) == 0xa4e00000) \ +|| (((x) & 0xfffffc0f) == 0xa8e00000) \ +|| (((x) & 0xfffffc0f) == 0xb4e00000) \ +|| (((x) & 0xfffffc0f) == 0xbce00000)) + +/* MOV Rm, Rn Rm-->Rn 0110 nnnn mmmm 0011 + where Rm is r2-r9 */ +#define IS_COMPACT_IND_ARG_MOV(x) \ +((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0020) && (((x) & 0x00f0) <= 0x0090)) + +/* compact direct arg move! + MOV.L Rn, @r14 0010 1110 mmmm 0010 */ +#define IS_COMPACT_ARG_MOV(x) \ +(((((x) & 0xff0f) == 0x2e02) && (((x) & 0x00f0) >= 0x0020) && ((x) & 0x00f0) <= 0x0090)) + +/* MOV.B Rm, @R14 0010 1110 mmmm 0000 + MOV.W Rm, @R14 0010 1110 mmmm 0001 */ +#define IS_COMPACT_MOV_TO_R14(x) \ +((((x) & 0xff0f) == 0x2e00) || (((x) & 0xff0f) == 0x2e01)) + +#define IS_JSR_R0(x) ((x) == 0x400b) +#define IS_NOP(x) ((x) == 0x0009) + + +/* MOV r15,r14 0110111011110011 + r15-->r14 */ +#define IS_MOV_SP_FP(x) ((x) == 0x6ef3) + +/* ADD #imm,r15 01111111iiiiiiii + r15+imm-->r15 */ +#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00) + +/* Skip any prologue before the guts of a function */ + +/* Skip the prologue using the debug information. If this fails we'll + fall back on the 'guess' method below. */ +static CORE_ADDR +after_prologue (CORE_ADDR pc) +{ + struct symtab_and_line sal; + CORE_ADDR func_addr, func_end; + + /* If we can not find the symbol in the partial symbol table, then + there is no hope we can determine the function's start address + with this code. */ + if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end)) + return 0; + + /* Get the line associated with FUNC_ADDR. */ + sal = find_pc_line (func_addr, 0); + + /* There are only two cases to consider. First, the end of the source line + is within the function bounds. In that case we return the end of the + source line. Second is the end of the source line extends beyond the + bounds of the current function. We need to use the slow code to + examine instructions in that case. */ + if (sal.end < func_end) + return sal.end; + else + return 0; +} + +static CORE_ADDR +look_for_args_moves (CORE_ADDR start_pc, int media_mode) +{ + CORE_ADDR here, end; + int w; + int insn_size = (media_mode ? 4 : 2); + + for (here = start_pc, end = start_pc + (insn_size * 28); here < end;) + { + if (media_mode) + { + w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size); + here += insn_size; + if (IS_MEDIA_IND_ARG_MOV (w)) + { + /* This must be followed by a store to r14, so the argument + is where the debug info says it is. This can happen after + the SP has been saved, unfortunately. */ + + int next_insn = read_memory_integer (UNMAKE_ISA32_ADDR (here), + insn_size); + here += insn_size; + if (IS_MEDIA_MOV_TO_R14 (next_insn)) + start_pc = here; + } + else if (IS_MEDIA_ARG_MOV (w)) + { + /* These instructions store directly the argument in r14. */ + start_pc = here; + } + else + break; + } + else + { + w = read_memory_integer (here, insn_size); + w = w & 0xffff; + here += insn_size; + if (IS_COMPACT_IND_ARG_MOV (w)) + { + /* This must be followed by a store to r14, so the argument + is where the debug info says it is. This can happen after + the SP has been saved, unfortunately. */ + + int next_insn = 0xffff & read_memory_integer (here, insn_size); + here += insn_size; + if (IS_COMPACT_MOV_TO_R14 (next_insn)) + start_pc = here; + } + else if (IS_COMPACT_ARG_MOV (w)) + { + /* These instructions store directly the argument in r14. */ + start_pc = here; + } + else if (IS_MOVL_R0 (w)) + { + /* There is a function that gcc calls to get the arguments + passed correctly to the function. Only after this + function call the arguments will be found at the place + where they are supposed to be. This happens in case the + argument has to be stored into a 64-bit register (for + instance doubles, long longs). SHcompact doesn't have + access to the full 64-bits, so we store the register in + stack slot and store the address of the stack slot in + the register, then do a call through a wrapper that + loads the memory value into the register. A SHcompact + callee calls an argument decoder + (GCC_shcompact_incoming_args) that stores the 64-bit + value in a stack slot and stores the address of the + stack slot in the register. GCC thinks the argument is + just passed by transparent reference, but this is only + true after the argument decoder is called. Such a call + needs to be considered part of the prologue. */ + + /* This must be followed by a JSR @r0 instruction and by + a NOP instruction. After these, the prologue is over! */ + + int next_insn = 0xffff & read_memory_integer (here, insn_size); + here += insn_size; + if (IS_JSR_R0 (next_insn)) + { + next_insn = 0xffff & read_memory_integer (here, insn_size); + here += insn_size; + + if (IS_NOP (next_insn)) + start_pc = here; + } + } + else + break; + } + } + + return start_pc; +} + +static CORE_ADDR +sh64_skip_prologue_hard_way (CORE_ADDR start_pc) +{ + CORE_ADDR here, end; + int updated_fp = 0; + int insn_size = 4; + int media_mode = 1; + + if (!start_pc) + return 0; + + if (pc_is_isa32 (start_pc) == 0) + { + insn_size = 2; + media_mode = 0; + } + + for (here = start_pc, end = start_pc + (insn_size * 28); here < end;) + { + + if (media_mode) + { + int w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size); + here += insn_size; + if (IS_STQ_R18_R14 (w) || IS_STQ_R18_R15 (w) || IS_STQ_R14_R15 (w) + || IS_STL_R14_R15 (w) || IS_STL_R18_R15 (w) + || IS_ADDIL_SP_MEDIA (w) || IS_ADDI_SP_MEDIA (w) || IS_PTABSL_R18 (w)) + { + start_pc = here; + } + else if (IS_MOV_SP_FP (w) || IS_MOV_SP_FP_MEDIA(w)) + { + start_pc = here; + updated_fp = 1; + } + else + if (updated_fp) + { + /* Don't bail out yet, we may have arguments stored in + registers here, according to the debug info, so that + gdb can print the frames correctly. */ + start_pc = look_for_args_moves (here - insn_size, media_mode); + break; + } + } + else + { + int w = 0xffff & read_memory_integer (here, insn_size); + here += insn_size; + + if (IS_STS_R0 (w) || IS_STS_PR (w) + || IS_MOV_TO_R15 (w) || IS_MOV_R14 (w) + || IS_MOV_R0 (w) || IS_ADD_SP_R0 (w) || IS_MOV_R14_R0 (w)) + { + start_pc = here; + } + else if (IS_MOV_SP_FP (w)) + { + start_pc = here; + updated_fp = 1; + } + else + if (updated_fp) + { + /* Don't bail out yet, we may have arguments stored in + registers here, according to the debug info, so that + gdb can print the frames correctly. */ + start_pc = look_for_args_moves (here - insn_size, media_mode); + break; + } + } + } + + return start_pc; +} + +static CORE_ADDR +sh_skip_prologue (CORE_ADDR pc) +{ + CORE_ADDR post_prologue_pc; + + /* See if we can determine the end of the prologue via the symbol table. + If so, then return either PC, or the PC after the prologue, whichever + is greater. */ + post_prologue_pc = after_prologue (pc); + + /* If after_prologue returned a useful address, then use it. Else + fall back on the instruction skipping code. */ + if (post_prologue_pc != 0) + return max (pc, post_prologue_pc); + else + return sh64_skip_prologue_hard_way (pc); +} + +/* Immediately after a function call, return the saved pc. + Can't always go through the frames for this because on some machines + the new frame is not set up until the new function executes + some instructions. + + The return address is the value saved in the PR register + 4 */ +static CORE_ADDR +sh_saved_pc_after_call (struct frame_info *frame) +{ + return (ADDR_BITS_REMOVE (read_register (PR_REGNUM))); +} + +/* Should call_function allocate stack space for a struct return? */ +static int +sh64_use_struct_convention (int gcc_p, struct type *type) +{ + return (TYPE_LENGTH (type) > 8); +} + +/* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function. + + We store structs through a pointer passed in R2 */ +static void +sh64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) +{ + write_register (STRUCT_RETURN_REGNUM, (addr)); +} + +/* Disassemble an instruction. */ +static int +gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info) +{ + info->endian = TARGET_BYTE_ORDER; + return print_insn_sh (memaddr, info); +} + +/* Given a register number RN as it appears in an assembly + instruction, find the corresponding register number in the GDB + scheme. */ +static int +translate_insn_rn (int rn, int media_mode) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + /* FIXME: this assumes that the number rn is for a not pseudo + register only. */ + if (media_mode) + return rn; + else + { + /* These registers don't have a corresponding compact one. */ + /* FIXME: This is probably not enough. */ +#if 0 + if ((rn >= 16 && rn <= 63) || (rn >= 93 && rn <= 140)) + return rn; +#endif + if (rn >= 0 && rn <= R0_C_REGNUM) + return R0_C_REGNUM + rn; + else + return rn; + } +} + +/* Given a GDB frame, determine the address of the calling function's + frame. This will be used to create a new GDB frame struct, and + then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC + will be called for the new frame. + + For us, the frame address is its stack pointer value, so we look up + the function prologue to determine the caller's sp value, and return it. */ +static CORE_ADDR +sh64_frame_chain (struct frame_info *frame) +{ + if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), + get_frame_base (frame), + get_frame_base (frame))) + return get_frame_base (frame); /* dummy frame same as caller's frame */ + if (get_frame_pc (frame) && !inside_entry_file (get_frame_pc (frame))) + { + int media_mode = pc_is_isa32 (get_frame_pc (frame)); + int size; + if (gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32) + size = 4; + else + size = REGISTER_RAW_SIZE (translate_insn_rn (DEPRECATED_FP_REGNUM, media_mode)); + return read_memory_integer (get_frame_base (frame) + + get_frame_extra_info (frame)->f_offset, + size); + } + else + return 0; +} + +static CORE_ADDR +sh64_get_saved_pr (struct frame_info *fi, int pr_regnum) +{ + int media_mode = 0; + + for (; fi; fi = get_next_frame (fi)) + if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi), + get_frame_base (fi))) + /* When the caller requests PR from the dummy frame, we return PC because + that's where the previous routine appears to have done a call from. */ + return deprecated_read_register_dummy (get_frame_pc (fi), + get_frame_base (fi), pr_regnum); + else + { + DEPRECATED_FRAME_INIT_SAVED_REGS (fi); + if (!get_frame_pc (fi)) + return 0; + + media_mode = pc_is_isa32 (get_frame_pc (fi)); + + if (get_frame_saved_regs (fi)[pr_regnum] != 0) + { + int gdb_reg_num = translate_insn_rn (pr_regnum, media_mode); + int size = ((gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32) + ? 4 + : REGISTER_RAW_SIZE (gdb_reg_num)); + return read_memory_integer (get_frame_saved_regs (fi)[pr_regnum], size); + } + } + return read_register (pr_regnum); +} + +/* For vectors of 4 floating point registers. */ +static int +fv_reg_base_num (int fv_regnum) +{ + int fp_regnum; + + fp_regnum = FP0_REGNUM + + (fv_regnum - FV0_REGNUM) * 4; + return fp_regnum; +} + +/* For double precision floating point registers, i.e 2 fp regs.*/ +static int +dr_reg_base_num (int dr_regnum) +{ + int fp_regnum; + + fp_regnum = FP0_REGNUM + + (dr_regnum - DR0_REGNUM) * 2; + return fp_regnum; +} + +/* For pairs of floating point registers */ +static int +fpp_reg_base_num (int fpp_regnum) +{ + int fp_regnum; + + fp_regnum = FP0_REGNUM + + (fpp_regnum - FPP0_REGNUM) * 2; + return fp_regnum; +} + +static int +is_media_pseudo (int rn) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + return (rn >= DR0_REGNUM + && rn <= FV_LAST_REGNUM); +} + +static int +sh64_get_gdb_regnum (int gcc_regnum, CORE_ADDR pc) +{ + return translate_insn_rn (gcc_regnum, pc_is_isa32 (pc)); +} + +static int +sh64_media_reg_base_num (int reg_nr) +{ + int base_regnum = -1; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + base_regnum = dr_reg_base_num (reg_nr); + + else if (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + base_regnum = fpp_reg_base_num (reg_nr); + + else if (reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + base_regnum = fv_reg_base_num (reg_nr); + + return base_regnum; +} + +/* *INDENT-OFF* */ +/* + SH COMPACT MODE (ISA 16) (all pseudo) 221-272 + GDB_REGNUM BASE_REGNUM + r0_c 221 0 + r1_c 222 1 + r2_c 223 2 + r3_c 224 3 + r4_c 225 4 + r5_c 226 5 + r6_c 227 6 + r7_c 228 7 + r8_c 229 8 + r9_c 230 9 + r10_c 231 10 + r11_c 232 11 + r12_c 233 12 + r13_c 234 13 + r14_c 235 14 + r15_c 236 15 + + pc_c 237 64 + gbr_c 238 16 + mach_c 239 17 + macl_c 240 17 + pr_c 241 18 + t_c 242 19 + fpscr_c 243 76 + fpul_c 244 109 + + fr0_c 245 77 + fr1_c 246 78 + fr2_c 247 79 + fr3_c 248 80 + fr4_c 249 81 + fr5_c 250 82 + fr6_c 251 83 + fr7_c 252 84 + fr8_c 253 85 + fr9_c 254 86 + fr10_c 255 87 + fr11_c 256 88 + fr12_c 257 89 + fr13_c 258 90 + fr14_c 259 91 + fr15_c 260 92 + + dr0_c 261 77 + dr2_c 262 79 + dr4_c 263 81 + dr6_c 264 83 + dr8_c 265 85 + dr10_c 266 87 + dr12_c 267 89 + dr14_c 268 91 + + fv0_c 269 77 + fv4_c 270 81 + fv8_c 271 85 + fv12_c 272 91 +*/ +/* *INDENT-ON* */ +static int +sh64_compact_reg_base_num (int reg_nr) +{ + int base_regnum = -1; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + /* general register N maps to general register N */ + if (reg_nr >= R0_C_REGNUM + && reg_nr <= R_LAST_C_REGNUM) + base_regnum = reg_nr - R0_C_REGNUM; + + /* floating point register N maps to floating point register N */ + else if (reg_nr >= FP0_C_REGNUM + && reg_nr <= FP_LAST_C_REGNUM) + base_regnum = reg_nr - FP0_C_REGNUM + FP0_REGNUM; + + /* double prec register N maps to base regnum for double prec register N */ + else if (reg_nr >= DR0_C_REGNUM + && reg_nr <= DR_LAST_C_REGNUM) + base_regnum = dr_reg_base_num (DR0_REGNUM + + reg_nr - DR0_C_REGNUM); + + /* vector N maps to base regnum for vector register N */ + else if (reg_nr >= FV0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM) + base_regnum = fv_reg_base_num (FV0_REGNUM + + reg_nr - FV0_C_REGNUM); + + else if (reg_nr == PC_C_REGNUM) + base_regnum = PC_REGNUM; + + else if (reg_nr == GBR_C_REGNUM) + base_regnum = 16; + + else if (reg_nr == MACH_C_REGNUM + || reg_nr == MACL_C_REGNUM) + base_regnum = 17; + + else if (reg_nr == PR_C_REGNUM) + base_regnum = 18; + + else if (reg_nr == T_C_REGNUM) + base_regnum = 19; + + else if (reg_nr == FPSCR_C_REGNUM) + base_regnum = FPSCR_REGNUM; /*???? this register is a mess. */ + + else if (reg_nr == FPUL_C_REGNUM) + base_regnum = FP0_REGNUM + 32; + + return base_regnum; +} + +/* Given a register number RN (according to the gdb scheme) , return + its corresponding architectural register. In media mode, only a + subset of the registers is pseudo registers. For compact mode, all + the registers are pseudo. */ +static int +translate_rn_to_arch_reg_num (int rn, int media_mode) +{ + + if (media_mode) + { + if (!is_media_pseudo (rn)) + return rn; + else + return sh64_media_reg_base_num (rn); + } + else + /* All compact registers are pseudo. */ + return sh64_compact_reg_base_num (rn); +} + +static int +sign_extend (int value, int bits) +{ + value = value & ((1 << bits) - 1); + return (value & (1 << (bits - 1)) + ? value | (~((1 << bits) - 1)) + : value); +} + +static void +sh64_nofp_frame_init_saved_regs (struct frame_info *fi) +{ + int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int)); + int rn; + int have_fp = 0; + int fp_regnum; + int sp_regnum; + int depth; + int pc; + int opc; + int insn; + int r0_val = 0; + int media_mode = 0; + int insn_size; + int gdb_register_number; + int register_number; + char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi), get_frame_base (fi)); + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (get_frame_saved_regs (fi) == NULL) + frame_saved_regs_zalloc (fi); + else + memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS); + + if (dummy_regs) + { + /* DANGER! This is ONLY going to work if the char buffer format of + the saved registers is byte-for-byte identical to the + CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ + memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS); + return; + } + + get_frame_extra_info (fi)->leaf_function = 1; + get_frame_extra_info (fi)->f_offset = 0; + + for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) + where[rn] = -1; + + depth = 0; + + /* Loop around examining the prologue insns until we find something + that does not appear to be part of the prologue. But give up + after 20 of them, since we're getting silly then. */ + + pc = get_frame_func (fi); + if (!pc) + { + deprecated_update_frame_pc_hack (fi, 0); + return; + } + + if (pc_is_isa32 (pc)) + { + media_mode = 1; + insn_size = 4; + } + else + { + media_mode = 0; + insn_size = 2; + } + + /* The frame pointer register is general register 14 in shmedia and + shcompact modes. In sh compact it is a pseudo register. Same goes + for the stack pointer register, which is register 15. */ + fp_regnum = translate_insn_rn (DEPRECATED_FP_REGNUM, media_mode); + sp_regnum = translate_insn_rn (SP_REGNUM, media_mode); + + for (opc = pc + (insn_size * 28); pc < opc; pc += insn_size) + { + insn = read_memory_integer (media_mode ? UNMAKE_ISA32_ADDR (pc) : pc, + insn_size); + + if (media_mode == 0) + { + if (IS_STS_PR (insn)) + { + int next_insn = read_memory_integer (pc + insn_size, insn_size); + if (IS_MOV_TO_R15 (next_insn)) + { + int reg_nr = PR_C_REGNUM; + + where[reg_nr] = depth - ((((next_insn & 0xf) ^ 0x8) - 0x8) << 2); + get_frame_extra_info (fi)->leaf_function = 0; + pc += insn_size; + } + } + else if (IS_MOV_R14 (insn)) + { + where[fp_regnum] = depth - ((((insn & 0xf) ^ 0x8) - 0x8) << 2); + } + + else if (IS_MOV_R0 (insn)) + { + /* Put in R0 the offset from SP at which to store some + registers. We are interested in this value, because it + will tell us where the given registers are stored within + the frame. */ + r0_val = ((insn & 0xff) ^ 0x80) - 0x80; + } + else if (IS_ADD_SP_R0 (insn)) + { + /* This instruction still prepares r0, but we don't care. + We already have the offset in r0_val. */ + } + else if (IS_STS_R0 (insn)) + { + /* Store PR at r0_val-4 from SP. Decrement r0 by 4*/ + int reg_nr = PR_C_REGNUM; + where[reg_nr] = depth - (r0_val - 4); + r0_val -= 4; + get_frame_extra_info (fi)->leaf_function = 0; + } + else if (IS_MOV_R14_R0 (insn)) + { + /* Store R14 at r0_val-4 from SP. Decrement r0 by 4 */ + where[fp_regnum] = depth - (r0_val - 4); + r0_val -= 4; + } + + else if (IS_ADD_SP (insn)) + { + depth -= ((insn & 0xff) ^ 0x80) - 0x80; + } + else if (IS_MOV_SP_FP (insn)) + break; + } + else + { + if (IS_ADDIL_SP_MEDIA (insn) + || IS_ADDI_SP_MEDIA (insn)) + { + depth -= sign_extend ((((insn & 0xffc00) ^ 0x80000) - 0x80000) >> 10, 9); + } + + else if (IS_STQ_R18_R15 (insn)) + { + where[PR_REGNUM] = + depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3); + get_frame_extra_info (fi)->leaf_function = 0; + } + + else if (IS_STL_R18_R15 (insn)) + { + where[PR_REGNUM] = + depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2); + get_frame_extra_info (fi)->leaf_function = 0; + } + + else if (IS_STQ_R14_R15 (insn)) + { + where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3); + } + + else if (IS_STL_R14_R15 (insn)) + { + where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2); + } + + else if (IS_MOV_SP_FP_MEDIA (insn)) + break; + } + } + + /* Now we know how deep things are, we can work out their addresses. */ + for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) + { + register_number = translate_rn_to_arch_reg_num (rn, media_mode); + + if (where[rn] >= 0) + { + if (rn == fp_regnum) + have_fp = 1; + + /* Watch out! saved_regs is only for the real registers, and + doesn't include space for the pseudo registers. */ + get_frame_saved_regs (fi)[register_number]= get_frame_base (fi) - where[rn] + depth; + + } + else + get_frame_saved_regs (fi)[register_number] = 0; + } + + if (have_fp) + { + /* SP_REGNUM is 15. For shmedia 15 is the real register. For + shcompact 15 is the arch register corresponding to the pseudo + register r15 which still is the SP register. */ + /* The place on the stack where fp is stored contains the sp of + the caller. */ + /* Again, saved_registers contains only space for the real + registers, so we store in DEPRECATED_FP_REGNUM position. */ + int size; + if (tdep->sh_abi == SH_ABI_32) + size = 4; + else + size = REGISTER_RAW_SIZE (fp_regnum); + get_frame_saved_regs (fi)[sp_regnum] = read_memory_integer (get_frame_saved_regs (fi)[fp_regnum], size); + } + else + get_frame_saved_regs (fi)[sp_regnum] = get_frame_base (fi); + + get_frame_extra_info (fi)->f_offset = depth - where[fp_regnum]; +} + +/* Initialize the extra info saved in a FRAME */ +static void +sh64_init_extra_frame_info (int fromleaf, struct frame_info *fi) +{ + int media_mode = pc_is_isa32 (get_frame_pc (fi)); + + frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info)); + + if (get_next_frame (fi)) + deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi))); + + if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi), + get_frame_base (fi))) + { + /* We need to setup fi->frame here because call_function_by_hand + gets it wrong by assuming it's always FP. */ + deprecated_update_frame_base_hack (fi, deprecated_read_register_dummy (get_frame_pc (fi), get_frame_base (fi), SP_REGNUM)); + get_frame_extra_info (fi)->return_pc = + deprecated_read_register_dummy (get_frame_pc (fi), + get_frame_base (fi), PC_REGNUM); + get_frame_extra_info (fi)->f_offset = -(DEPRECATED_CALL_DUMMY_LENGTH + 4); + get_frame_extra_info (fi)->leaf_function = 0; + return; + } + else + { + DEPRECATED_FRAME_INIT_SAVED_REGS (fi); + get_frame_extra_info (fi)->return_pc = + sh64_get_saved_pr (fi, PR_REGNUM); + } +} + +static void +sh64_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp, + struct frame_info *frame, int regnum, + enum lval_type *lval) +{ + int media_mode; + int live_regnum = regnum; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (!target_has_registers) + error ("No registers."); + + /* Normal systems don't optimize out things with register numbers. */ + if (optimized != NULL) + *optimized = 0; + + if (addrp) /* default assumption: not found in memory */ + *addrp = 0; + + if (raw_buffer) + memset (raw_buffer, 0, sizeof (raw_buffer)); + + /* We must do this here, before the following while loop changes + frame, and makes it NULL. If this is a media register number, + but we are in compact mode, it will become the corresponding + compact pseudo register. If there is no corresponding compact + pseudo-register what do we do?*/ + media_mode = pc_is_isa32 (get_frame_pc (frame)); + live_regnum = translate_insn_rn (regnum, media_mode); + + /* Note: since the current frame's registers could only have been + saved by frames INTERIOR TO the current frame, we skip examining + the current frame itself: otherwise, we would be getting the + previous frame's registers which were saved by the current frame. */ + + while (frame && ((frame = get_next_frame (frame)) != NULL)) + { + if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), + get_frame_base (frame), + get_frame_base (frame))) + { + if (lval) /* found it in a CALL_DUMMY frame */ + *lval = not_lval; + if (raw_buffer) + memcpy (raw_buffer, + (deprecated_generic_find_dummy_frame (get_frame_pc (frame), get_frame_base (frame)) + + REGISTER_BYTE (regnum)), + REGISTER_RAW_SIZE (regnum)); + return; + } + + DEPRECATED_FRAME_INIT_SAVED_REGS (frame); + if (get_frame_saved_regs (frame) != NULL + && get_frame_saved_regs (frame)[regnum] != 0) + { + if (lval) /* found it saved on the stack */ + *lval = lval_memory; + if (regnum == SP_REGNUM) + { + if (raw_buffer) /* SP register treated specially */ + store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), + get_frame_saved_regs (frame)[regnum]); + } + else + { /* any other register */ + + if (addrp) + *addrp = get_frame_saved_regs (frame)[regnum]; + if (raw_buffer) + { + int size; + if (tdep->sh_abi == SH_ABI_32 + && (live_regnum == DEPRECATED_FP_REGNUM + || live_regnum == PR_REGNUM)) + size = 4; + else + size = REGISTER_RAW_SIZE (live_regnum); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) + read_memory (get_frame_saved_regs (frame)[regnum], raw_buffer, size); + else + read_memory (get_frame_saved_regs (frame)[regnum], + raw_buffer + + REGISTER_RAW_SIZE (live_regnum) + - size, + size); + } + } + return; + } + } + + /* If we get thru the loop to this point, it means the register was + not saved in any frame. Return the actual live-register value. */ + + if (lval) /* found it in a live register */ + *lval = lval_register; + if (addrp) + *addrp = REGISTER_BYTE (live_regnum); + if (raw_buffer) + deprecated_read_register_gen (live_regnum, raw_buffer); +} + +static CORE_ADDR +sh64_extract_struct_value_address (char *regbuf) +{ + return (extract_unsigned_integer ((regbuf + REGISTER_BYTE (STRUCT_RETURN_REGNUM)), + REGISTER_RAW_SIZE (STRUCT_RETURN_REGNUM))); +} + +static CORE_ADDR +sh_frame_saved_pc (struct frame_info *frame) +{ + return (get_frame_extra_info (frame)->return_pc); +} + +/* Discard from the stack the innermost frame, restoring all saved registers. + Used in the 'return' command. */ +static void +sh64_pop_frame (void) +{ + register struct frame_info *frame = get_current_frame (); + register CORE_ADDR fp; + register int regnum; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + int media_mode = pc_is_isa32 (get_frame_pc (frame)); + + if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), + get_frame_base (frame), + get_frame_base (frame))) + generic_pop_dummy_frame (); + else + { + fp = get_frame_base (frame); + DEPRECATED_FRAME_INIT_SAVED_REGS (frame); + + /* Copy regs from where they were saved in the frame */ + for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) + if (get_frame_saved_regs (frame)[regnum]) + { + int size; + if (tdep->sh_abi == SH_ABI_32 + && (regnum == DEPRECATED_FP_REGNUM + || regnum == PR_REGNUM)) + size = 4; + else + size = REGISTER_RAW_SIZE (translate_insn_rn (regnum, + media_mode)); + write_register (regnum, + read_memory_integer (get_frame_saved_regs (frame)[regnum], + size)); + } + + write_register (PC_REGNUM, get_frame_extra_info (frame)->return_pc); + write_register (SP_REGNUM, fp + 8); + } + flush_cached_frames (); +} + +static CORE_ADDR +sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp) +{ + return sp & ~3; +} + +/* Function: push_arguments + Setup the function arguments for calling a function in the inferior. + + On the Hitachi SH architecture, there are four registers (R4 to R7) + which are dedicated for passing function arguments. Up to the first + four arguments (depending on size) may go into these registers. + The rest go on the stack. + + Arguments that are smaller than 4 bytes will still take up a whole + register or a whole 32-bit word on the stack, and will be + right-justified in the register or the stack word. This includes + chars, shorts, and small aggregate types. + + Arguments that are larger than 4 bytes may be split between two or + more registers. If there are not enough registers free, an argument + may be passed partly in a register (or registers), and partly on the + stack. This includes doubles, long longs, and larger aggregates. + As far as I know, there is no upper limit to the size of aggregates + that will be passed in this way; in other words, the convention of + passing a pointer to a large aggregate instead of a copy is not used. + + An exceptional case exists for struct arguments (and possibly other + aggregates such as arrays) if the size is larger than 4 bytes but + not a multiple of 4 bytes. In this case the argument is never split + between the registers and the stack, but instead is copied in its + entirety onto the stack, AND also copied into as many registers as + there is room for. In other words, space in registers permitting, + two copies of the same argument are passed in. As far as I can tell, + only the one on the stack is used, although that may be a function + of the level of compiler optimization. I suspect this is a compiler + bug. Arguments of these odd sizes are left-justified within the + word (as opposed to arguments smaller than 4 bytes, which are + right-justified). + + If the function is to return an aggregate type such as a struct, it + is either returned in the normal return value register R0 (if its + size is no greater than one byte), or else the caller must allocate + space into which the callee will copy the return value (if the size + is greater than one byte). In this case, a pointer to the return + value location is passed into the callee in register R2, which does + not displace any of the other arguments passed in via registers R4 + to R7. */ + +/* R2-R9 for integer types and integer equivalent (char, pointers) and + non-scalar (struct, union) elements (even if the elements are + floats). + FR0-FR11 for single precision floating point (float) + DR0-DR10 for double precision floating point (double) + + If a float is argument number 3 (for instance) and arguments number + 1,2, and 4 are integer, the mapping will be: + arg1 -->R2, arg2 --> R3, arg3 -->FR0, arg4 --> R5. I.e. R4 is not used. + + If a float is argument number 10 (for instance) and arguments number + 1 through 10 are integer, the mapping will be: + arg1->R2, arg2->R3, arg3->R4, arg4->R5, arg5->R6, arg6->R7, arg7->R8, + arg8->R9, arg9->(0,SP)stack(8-byte aligned), arg10->FR0, arg11->stack(16,SP). + I.e. there is hole in the stack. + + Different rules apply for variable arguments functions, and for functions + for which the prototype is not known. */ + +static CORE_ADDR +sh64_push_arguments (int nargs, struct value **args, CORE_ADDR sp, + int struct_return, CORE_ADDR struct_addr) +{ + int stack_offset, stack_alloc; + int int_argreg; + int float_argreg; + int double_argreg; + int float_arg_index = 0; + int double_arg_index = 0; + int argnum; + struct type *type; + CORE_ADDR regval; + char *val; + char valbuf[8]; + char valbuf_tmp[8]; + int len; + int argreg_size; + int fp_args[12]; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + memset (fp_args, 0, sizeof (fp_args)); + + /* first force sp to a 8-byte alignment */ + sp = sp & ~7; + + /* The "struct return pointer" pseudo-argument has its own dedicated + register */ + + if (struct_return) + write_register (STRUCT_RETURN_REGNUM, struct_addr); + + /* Now make sure there's space on the stack */ + for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) + stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 7) & ~7); + sp -= stack_alloc; /* make room on stack for args */ + + /* Now load as many as possible of the first arguments into + registers, and push the rest onto the stack. There are 64 bytes + in eight registers available. Loop thru args from first to last. */ + + int_argreg = ARG0_REGNUM; + float_argreg = FP0_REGNUM; + double_argreg = DR0_REGNUM; + + for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) + { + type = VALUE_TYPE (args[argnum]); + len = TYPE_LENGTH (type); + memset (valbuf, 0, sizeof (valbuf)); + + if (TYPE_CODE (type) != TYPE_CODE_FLT) + { + argreg_size = REGISTER_RAW_SIZE (int_argreg); + + if (len < argreg_size) + { + /* value gets right-justified in the register or stack word */ + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + memcpy (valbuf + argreg_size - len, + (char *) VALUE_CONTENTS (args[argnum]), len); + else + memcpy (valbuf, (char *) VALUE_CONTENTS (args[argnum]), len); + + val = valbuf; + } + else + val = (char *) VALUE_CONTENTS (args[argnum]); + + while (len > 0) + { + if (int_argreg > ARGLAST_REGNUM) + { + /* must go on the stack */ + write_memory (sp + stack_offset, val, argreg_size); + stack_offset += 8;/*argreg_size;*/ + } + /* NOTE WELL!!!!! This is not an "else if" clause!!! + That's because some *&^%$ things get passed on the stack + AND in the registers! */ + if (int_argreg <= ARGLAST_REGNUM) + { + /* there's room in a register */ + regval = extract_unsigned_integer (val, argreg_size); + write_register (int_argreg, regval); + } + /* Store the value 8 bytes at a time. This means that + things larger than 8 bytes may go partly in registers + and partly on the stack. FIXME: argreg is incremented + before we use its size. */ + len -= argreg_size; + val += argreg_size; + int_argreg++; + } + } + else + { + val = (char *) VALUE_CONTENTS (args[argnum]); + if (len == 4) + { + /* Where is it going to be stored? */ + while (fp_args[float_arg_index]) + float_arg_index ++; + + /* Now float_argreg points to the register where it + should be stored. Are we still within the allowed + register set? */ + if (float_arg_index <= FLOAT_ARGLAST_REGNUM) + { + /* Goes in FR0...FR11 */ + deprecated_write_register_gen (FP0_REGNUM + float_arg_index, + val); + fp_args[float_arg_index] = 1; + /* Skip the corresponding general argument register. */ + int_argreg ++; + } + else + ; + /* Store it as the integers, 8 bytes at the time, if + necessary spilling on the stack. */ + + } + else if (len == 8) + { + /* Where is it going to be stored? */ + while (fp_args[double_arg_index]) + double_arg_index += 2; + /* Now double_argreg points to the register + where it should be stored. + Are we still within the allowed register set? */ + if (double_arg_index < FLOAT_ARGLAST_REGNUM) + { + /* Goes in DR0...DR10 */ + /* The numbering of the DRi registers is consecutive, + i.e. includes odd numbers. */ + int double_register_offset = double_arg_index / 2; + int regnum = DR0_REGNUM + + double_register_offset; +#if 0 + if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) + { + memset (valbuf_tmp, 0, sizeof (valbuf_tmp)); + DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, + type, val, + valbuf_tmp); + val = valbuf_tmp; + } +#endif + /* Note: must use write_register_gen here instead + of regcache_raw_write, because + regcache_raw_write works only for real + registers, not pseudo. write_register_gen will + call the gdbarch function to do register + writes, and that will properly know how to deal + with pseudoregs. */ + deprecated_write_register_gen (regnum, val); + fp_args[double_arg_index] = 1; + fp_args[double_arg_index + 1] = 1; + /* Skip the corresponding general argument register. */ + int_argreg ++; + } + else + ; + /* Store it as the integers, 8 bytes at the time, if + necessary spilling on the stack. */ + } + } + } + return sp; +} + +/* Function: push_return_address (pc) + Set up the return address for the inferior function call. + Needed for targets where we don't actually execute a JSR/BSR instruction */ + +static CORE_ADDR +sh64_push_return_address (CORE_ADDR pc, CORE_ADDR sp) +{ + write_register (PR_REGNUM, CALL_DUMMY_ADDRESS ()); + return sp; +} + +/* Find a function's return value in the appropriate registers (in + regbuf), and copy it into valbuf. Extract from an array REGBUF + containing the (raw) register state a function return value of type + TYPE, and copy that, in virtual format, into VALBUF. */ +static void +sh64_extract_return_value (struct type *type, char *regbuf, char *valbuf) +{ + int offset; + int return_register; + int len = TYPE_LENGTH (type); + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (TYPE_CODE (type) == TYPE_CODE_FLT) + { + if (len == 4) + { + /* Return value stored in FP0_REGNUM */ + return_register = FP0_REGNUM; + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, (char *) regbuf + offset, len); + } + else if (len == 8) + { + /* return value stored in DR0_REGNUM */ + DOUBLEST val; + + return_register = DR0_REGNUM; + offset = REGISTER_BYTE (return_register); + + if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) + floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, + (char *) regbuf + offset, &val); + else + floatformat_to_doublest (&floatformat_ieee_double_big, + (char *) regbuf + offset, &val); + deprecated_store_floating (valbuf, len, val); + } + } + else + { + if (len <= 8) + { + /* Result is in register 2. If smaller than 8 bytes, it is padded + at the most significant end. */ + return_register = DEFAULT_RETURN_REGNUM; + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + offset = REGISTER_BYTE (return_register) + + REGISTER_RAW_SIZE (return_register) - len; + else + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, (char *) regbuf + offset, len); + } + else + error ("bad size for return value"); + } +} + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. + If the architecture is sh4 or sh3e, store a function's return value + in the R0 general register or in the FP0 floating point register, + depending on the type of the return value. In all the other cases + the result is stored in r0, left-justified. */ + +static void +sh64_store_return_value (struct type *type, char *valbuf) +{ + char buf[64]; /* more than enough... */ + int len = TYPE_LENGTH (type); + + if (TYPE_CODE (type) == TYPE_CODE_FLT) + { + if (len == 4) + { + /* Return value stored in FP0_REGNUM */ + deprecated_write_register_gen (FP0_REGNUM, valbuf); + } + if (len == 8) + { + /* return value stored in DR0_REGNUM */ + /* FIXME: Implement */ + } + } + else + { + int return_register = DEFAULT_RETURN_REGNUM; + int offset = 0; + + if (len <= REGISTER_RAW_SIZE (return_register)) + { + /* Pad with zeros. */ + memset (buf, 0, REGISTER_RAW_SIZE (return_register)); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) + offset = 0; /*REGISTER_RAW_SIZE (return_register) - len;*/ + else + offset = REGISTER_RAW_SIZE (return_register) - len; + + memcpy (buf + offset, valbuf, len); + deprecated_write_register_gen (return_register, buf); + } + else + deprecated_write_register_gen (return_register, valbuf); + } +} + +static void +sh64_show_media_regs (void) +{ + int i; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + printf_filtered ("PC=%s SR=%016llx \n", + paddr (read_register (PC_REGNUM)), + (long long) read_register (SR_REGNUM)); + + printf_filtered ("SSR=%016llx SPC=%016llx \n", + (long long) read_register (SSR_REGNUM), + (long long) read_register (SPC_REGNUM)); + printf_filtered ("FPSCR=%016lx\n ", + (long) read_register (FPSCR_REGNUM)); + + for (i = 0; i < 64; i = i + 4) + printf_filtered ("\nR%d-R%d %016llx %016llx %016llx %016llx\n", + i, i + 3, + (long long) read_register (i + 0), + (long long) read_register (i + 1), + (long long) read_register (i + 2), + (long long) read_register (i + 3)); + + printf_filtered ("\n"); + + for (i = 0; i < 64; i = i + 8) + printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + i, i + 7, + (long) read_register (FP0_REGNUM + i + 0), + (long) read_register (FP0_REGNUM + i + 1), + (long) read_register (FP0_REGNUM + i + 2), + (long) read_register (FP0_REGNUM + i + 3), + (long) read_register (FP0_REGNUM + i + 4), + (long) read_register (FP0_REGNUM + i + 5), + (long) read_register (FP0_REGNUM + i + 6), + (long) read_register (FP0_REGNUM + i + 7)); +} + +static void +sh64_show_compact_regs (void) +{ + int i; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + printf_filtered ("PC=%s \n", + paddr (read_register (PC_C_REGNUM))); + + printf_filtered ("GBR=%08lx MACH=%08lx MACL=%08lx PR=%08lx T=%08lx\n", + (long) read_register (GBR_C_REGNUM), + (long) read_register (MACH_C_REGNUM), + (long) read_register (MACL_C_REGNUM), + (long) read_register (PR_C_REGNUM), + (long) read_register (T_C_REGNUM)); + printf_filtered ("FPSCR=%08lx FPUL=%08lx\n", + (long) read_register (FPSCR_C_REGNUM), + (long) read_register (FPUL_C_REGNUM)); + + for (i = 0; i < 16; i = i + 4) + printf_filtered ("\nR%d-R%d %08lx %08lx %08lx %08lx\n", + i, i + 3, + (long) read_register (i + 0), + (long) read_register (i + 1), + (long) read_register (i + 2), + (long) read_register (i + 3)); + + printf_filtered ("\n"); + + for (i = 0; i < 16; i = i + 8) + printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", + i, i + 7, + (long) read_register (FP0_REGNUM + i + 0), + (long) read_register (FP0_REGNUM + i + 1), + (long) read_register (FP0_REGNUM + i + 2), + (long) read_register (FP0_REGNUM + i + 3), + (long) read_register (FP0_REGNUM + i + 4), + (long) read_register (FP0_REGNUM + i + 5), + (long) read_register (FP0_REGNUM + i + 6), + (long) read_register (FP0_REGNUM + i + 7)); +} + +/*FIXME!!! This only shows the registers for shmedia, excluding the + pseudo registers. */ +void +sh64_show_regs (void) +{ + if (deprecated_selected_frame + && pc_is_isa32 (get_frame_pc (deprecated_selected_frame))) + sh64_show_media_regs (); + else + sh64_show_compact_regs (); +} + +/* *INDENT-OFF* */ +/* + SH MEDIA MODE (ISA 32) + general registers (64-bit) 0-63 +0 r0, r1, r2, r3, r4, r5, r6, r7, +64 r8, r9, r10, r11, r12, r13, r14, r15, +128 r16, r17, r18, r19, r20, r21, r22, r23, +192 r24, r25, r26, r27, r28, r29, r30, r31, +256 r32, r33, r34, r35, r36, r37, r38, r39, +320 r40, r41, r42, r43, r44, r45, r46, r47, +384 r48, r49, r50, r51, r52, r53, r54, r55, +448 r56, r57, r58, r59, r60, r61, r62, r63, + + pc (64-bit) 64 +512 pc, + + status reg., saved status reg., saved pc reg. (64-bit) 65-67 +520 sr, ssr, spc, + + target registers (64-bit) 68-75 +544 tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7, + + floating point state control register (32-bit) 76 +608 fpscr, + + single precision floating point registers (32-bit) 77-140 +612 fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7, +644 fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15, +676 fr16, fr17, fr18, fr19, fr20, fr21, fr22, fr23, +708 fr24, fr25, fr26, fr27, fr28, fr29, fr30, fr31, +740 fr32, fr33, fr34, fr35, fr36, fr37, fr38, fr39, +772 fr40, fr41, fr42, fr43, fr44, fr45, fr46, fr47, +804 fr48, fr49, fr50, fr51, fr52, fr53, fr54, fr55, +836 fr56, fr57, fr58, fr59, fr60, fr61, fr62, fr63, + +TOTAL SPACE FOR REGISTERS: 868 bytes + +From here on they are all pseudo registers: no memory allocated. +REGISTER_BYTE returns the register byte for the base register. + + double precision registers (pseudo) 141-172 + dr0, dr2, dr4, dr6, dr8, dr10, dr12, dr14, + dr16, dr18, dr20, dr22, dr24, dr26, dr28, dr30, + dr32, dr34, dr36, dr38, dr40, dr42, dr44, dr46, + dr48, dr50, dr52, dr54, dr56, dr58, dr60, dr62, + + floating point pairs (pseudo) 173-204 + fp0, fp2, fp4, fp6, fp8, fp10, fp12, fp14, + fp16, fp18, fp20, fp22, fp24, fp26, fp28, fp30, + fp32, fp34, fp36, fp38, fp40, fp42, fp44, fp46, + fp48, fp50, fp52, fp54, fp56, fp58, fp60, fp62, + + floating point vectors (4 floating point regs) (pseudo) 205-220 + fv0, fv4, fv8, fv12, fv16, fv20, fv24, fv28, + fv32, fv36, fv40, fv44, fv48, fv52, fv56, fv60, + + SH COMPACT MODE (ISA 16) (all pseudo) 221-272 + r0_c, r1_c, r2_c, r3_c, r4_c, r5_c, r6_c, r7_c, + r8_c, r9_c, r10_c, r11_c, r12_c, r13_c, r14_c, r15_c, + pc_c, + gbr_c, mach_c, macl_c, pr_c, t_c, + fpscr_c, fpul_c, + fr0_c, fr1_c, fr2_c, fr3_c, fr4_c, fr5_c, fr6_c, fr7_c, + fr8_c, fr9_c, fr10_c, fr11_c, fr12_c, fr13_c, fr14_c, fr15_c + dr0_c, dr2_c, dr4_c, dr6_c, dr8_c, dr10_c, dr12_c, dr14_c + fv0_c, fv4_c, fv8_c, fv12_c +*/ +/* *INDENT-ON* */ +static int +sh_sh64_register_byte (int reg_nr) +{ + int base_regnum = -1; + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + /* If it is a pseudo register, get the number of the first floating + point register that is part of it. */ + if (reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + base_regnum = dr_reg_base_num (reg_nr); + + else if (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + base_regnum = fpp_reg_base_num (reg_nr); + + else if (reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + base_regnum = fv_reg_base_num (reg_nr); + + /* sh compact pseudo register. FPSCR is a pathological case, need to + treat it as special. */ + else if ((reg_nr >= R0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM) + && reg_nr != FPSCR_C_REGNUM) + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* Now return the offset in bytes within the register cache. */ + /* sh media pseudo register, i.e. any of DR, FFP, FV registers. */ + if (reg_nr >= DR0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + return (base_regnum - FP0_REGNUM + 1) * 4 + + (TR7_REGNUM + 1) * 8; + + /* sh compact pseudo register: general register */ + if ((reg_nr >= R0_C_REGNUM + && reg_nr <= R_LAST_C_REGNUM)) + return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG + ? base_regnum * 8 + 4 + : base_regnum * 8); + + /* sh compact pseudo register: */ + if (reg_nr == PC_C_REGNUM + || reg_nr == GBR_C_REGNUM + || reg_nr == MACL_C_REGNUM + || reg_nr == PR_C_REGNUM) + return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG + ? base_regnum * 8 + 4 + : base_regnum * 8); + + if (reg_nr == MACH_C_REGNUM) + return base_regnum * 8; + + if (reg_nr == T_C_REGNUM) + return base_regnum * 8; /* FIXME??? how do we get bit 0? Do we have to? */ + + /* sh compact pseudo register: floating point register */ + else if (reg_nr >= FP0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM) + return (base_regnum - FP0_REGNUM) * 4 + + (TR7_REGNUM + 1) * 8 + 4; + + else if (reg_nr == FPSCR_C_REGNUM) + /* This is complicated, for now return the beginning of the + architectural FPSCR register. */ + return (TR7_REGNUM + 1) * 8; + + else if (reg_nr == FPUL_C_REGNUM) + return ((base_regnum - FP0_REGNUM) * 4 + + (TR7_REGNUM + 1) * 8 + 4); + + /* It is not a pseudo register. */ + /* It is a 64 bit register. */ + else if (reg_nr <= TR7_REGNUM) + return reg_nr * 8; + + /* It is a 32 bit register. */ + else if (reg_nr == FPSCR_REGNUM) + return (FPSCR_REGNUM * 8); + + /* It is floating point 32-bit register */ + else + return ((TR7_REGNUM + 1) * 8 + + (reg_nr - FP0_REGNUM + 1) * 4); +} + +static int +sh_sh64_register_raw_size (int reg_nr) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if ((reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + || (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + || (reg_nr >= DR0_C_REGNUM + && reg_nr <= DR_LAST_C_REGNUM) + || (reg_nr <= TR7_REGNUM)) + return 8; + + else if ((reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + || (reg_nr >= FV0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM)) + return 16; + + else /* this covers also the 32-bit SH compact registers. */ + return 4; +} + +/* ??????? FIXME */ +static int +sh_sh64_register_virtual_size (int reg_nr) +{ + if (reg_nr >= FP0_REGNUM + && reg_nr <= FP_LAST_REGNUM) + return 4; + else + return 8; +} + +static struct type * +sh_sh64_build_float_register_type (int high) +{ + struct type *temp; + + temp = create_range_type (NULL, builtin_type_int, 0, high); + return create_array_type (NULL, builtin_type_float, temp); +} + +static struct type * +sh_sh64_register_virtual_type (int reg_nr) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if ((reg_nr >= FP0_REGNUM + && reg_nr <= FP_LAST_REGNUM) + || (reg_nr >= FP0_C_REGNUM + && reg_nr <= FP_LAST_C_REGNUM)) + return builtin_type_float; + else if ((reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + || (reg_nr >= DR0_C_REGNUM + && reg_nr <= DR_LAST_C_REGNUM)) + return builtin_type_double; + else if (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + return sh_sh64_build_float_register_type (1); + else if ((reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + ||(reg_nr >= FV0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM)) + return sh_sh64_build_float_register_type (3); + else if (reg_nr == FPSCR_REGNUM) + return builtin_type_int; + else if (reg_nr >= R0_C_REGNUM + && reg_nr < FP0_C_REGNUM) + return builtin_type_int; + else + return builtin_type_long_long; +} + +static void +sh_sh64_register_convert_to_virtual (int regnum, struct type *type, + char *from, char *to) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE) + { + /* It is a no-op. */ + memcpy (to, from, REGISTER_RAW_SIZE (regnum)); + return; + } + + if ((regnum >= DR0_REGNUM + && regnum <= DR_LAST_REGNUM) + || (regnum >= DR0_C_REGNUM + && regnum <= DR_LAST_C_REGNUM)) + { + DOUBLEST val; + floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); + deprecated_store_floating(to, TYPE_LENGTH(type), val); + } + else + error("sh_register_convert_to_virtual called with non DR register number"); +} + +static void +sh_sh64_register_convert_to_raw (struct type *type, int regnum, + const void *from, void *to) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE) + { + /* It is a no-op. */ + memcpy (to, from, REGISTER_RAW_SIZE (regnum)); + return; + } + + if ((regnum >= DR0_REGNUM + && regnum <= DR_LAST_REGNUM) + || (regnum >= DR0_C_REGNUM + && regnum <= DR_LAST_C_REGNUM)) + { + DOUBLEST val = deprecated_extract_floating (from, TYPE_LENGTH(type)); + floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to); + } + else + error("sh_register_convert_to_raw called with non DR register number"); +} + +static void +sh64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, + int reg_nr, void *buffer) +{ + int base_regnum; + int portion; + int offset = 0; + char temp_buffer[MAX_REGISTER_SIZE]; + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + if (reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + { + base_regnum = dr_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + /* DR regs are double precision registers obtained by + concatenating 2 single precision floating point registers. */ + for (portion = 0; portion < 2; portion++) + regcache_raw_read (regcache, base_regnum + portion, + (temp_buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + + /* We must pay attention to the endiannes. */ + sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr), + temp_buffer, buffer); + + } + + else if (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + { + base_regnum = fpp_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + /* FPP regs are pairs of single precision registers obtained by + concatenating 2 single precision floating point registers. */ + for (portion = 0; portion < 2; portion++) + regcache_raw_read (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + else if (reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + { + base_regnum = fv_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + /* FV regs are vectors of single precision registers obtained by + concatenating 4 single precision floating point registers. */ + for (portion = 0; portion < 4; portion++) + regcache_raw_read (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + /* sh compact pseudo registers. 1-to-1 with a shmedia register */ + else if (reg_nr >= R0_C_REGNUM + && reg_nr <= T_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + regcache_raw_read (regcache, base_regnum, temp_buffer); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + offset = 4; + memcpy (buffer, temp_buffer + offset, 4); /* get LOWER 32 bits only????*/ + } + + else if (reg_nr >= FP0_C_REGNUM + && reg_nr <= FP_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + /* Floating point registers map 1-1 to the media fp regs, + they have the same size and endienness. */ + regcache_raw_read (regcache, base_regnum, buffer); + } + + else if (reg_nr >= DR0_C_REGNUM + && reg_nr <= DR_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* DR_C regs are double precision registers obtained by + concatenating 2 single precision floating point registers. */ + for (portion = 0; portion < 2; portion++) + regcache_raw_read (regcache, base_regnum + portion, + (temp_buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + + /* We must pay attention to the endiannes. */ + sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr), + temp_buffer, buffer); + } + + else if (reg_nr >= FV0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* Build the value in the provided buffer. */ + /* FV_C regs are vectors of single precision registers obtained by + concatenating 4 single precision floating point registers. */ + for (portion = 0; portion < 4; portion++) + regcache_raw_read (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + else if (reg_nr == FPSCR_C_REGNUM) + { + int fpscr_base_regnum; + int sr_base_regnum; + unsigned int fpscr_value; + unsigned int sr_value; + unsigned int fpscr_c_value; + unsigned int fpscr_c_part1_value; + unsigned int fpscr_c_part2_value; + + fpscr_base_regnum = FPSCR_REGNUM; + sr_base_regnum = SR_REGNUM; + + /* Build the value in the provided buffer. */ + /* FPSCR_C is a very weird register that contains sparse bits + from the FPSCR and the SR architectural registers. + Specifically: */ + /* *INDENT-OFF* */ + /* + FPSRC_C bit + 0 Bit 0 of FPSCR + 1 reserved + 2-17 Bit 2-18 of FPSCR + 18-20 Bits 12,13,14 of SR + 21-31 reserved + */ + /* *INDENT-ON* */ + /* Get FPSCR into a local buffer */ + regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer); + /* Get value as an int. */ + fpscr_value = extract_unsigned_integer (temp_buffer, 4); + /* Get SR into a local buffer */ + regcache_raw_read (regcache, sr_base_regnum, temp_buffer); + /* Get value as an int. */ + sr_value = extract_unsigned_integer (temp_buffer, 4); + /* Build the new value. */ + fpscr_c_part1_value = fpscr_value & 0x3fffd; + fpscr_c_part2_value = (sr_value & 0x7000) << 6; + fpscr_c_value = fpscr_c_part1_value | fpscr_c_part2_value; + /* Store that in out buffer!!! */ + store_unsigned_integer (buffer, 4, fpscr_c_value); + /* FIXME There is surely an endianness gotcha here. */ + } + + else if (reg_nr == FPUL_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + /* FPUL_C register is floating point register 32, + same size, same endianness. */ + regcache_raw_read (regcache, base_regnum, buffer); + } +} + +static void +sh64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, + int reg_nr, const void *buffer) +{ + int base_regnum, portion; + int offset; + char temp_buffer[MAX_REGISTER_SIZE]; + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + if (reg_nr >= DR0_REGNUM + && reg_nr <= DR_LAST_REGNUM) + { + base_regnum = dr_reg_base_num (reg_nr); + /* We must pay attention to the endiannes. */ + sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr, + buffer, temp_buffer); + + + /* Write the real regs for which this one is an alias. */ + for (portion = 0; portion < 2; portion++) + regcache_raw_write (regcache, base_regnum + portion, + (temp_buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + else if (reg_nr >= FPP0_REGNUM + && reg_nr <= FPP_LAST_REGNUM) + { + base_regnum = fpp_reg_base_num (reg_nr); + + /* Write the real regs for which this one is an alias. */ + for (portion = 0; portion < 2; portion++) + regcache_raw_write (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + else if (reg_nr >= FV0_REGNUM + && reg_nr <= FV_LAST_REGNUM) + { + base_regnum = fv_reg_base_num (reg_nr); + + /* Write the real regs for which this one is an alias. */ + for (portion = 0; portion < 4; portion++) + regcache_raw_write (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + + /* sh compact general pseudo registers. 1-to-1 with a shmedia + register but only 4 bytes of it. */ + else if (reg_nr >= R0_C_REGNUM + && reg_nr <= T_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + /* reg_nr is 32 bit here, and base_regnum is 64 bits. */ + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + offset = 4; + else + offset = 0; + /* Let's read the value of the base register into a temporary + buffer, so that overwriting the last four bytes with the new + value of the pseudo will leave the upper 4 bytes unchanged. */ + regcache_raw_read (regcache, base_regnum, temp_buffer); + /* Write as an 8 byte quantity */ + memcpy (temp_buffer + offset, buffer, 4); + regcache_raw_write (regcache, base_regnum, temp_buffer); + } + + /* sh floating point compact pseudo registers. 1-to-1 with a shmedia + registers. Both are 4 bytes. */ + else if (reg_nr >= FP0_C_REGNUM + && reg_nr <= FP_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + regcache_raw_write (regcache, base_regnum, buffer); + } + + else if (reg_nr >= DR0_C_REGNUM + && reg_nr <= DR_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + for (portion = 0; portion < 2; portion++) + { + /* We must pay attention to the endiannes. */ + sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr, + buffer, temp_buffer); + + regcache_raw_write (regcache, base_regnum + portion, + (temp_buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + } + + else if (reg_nr >= FV0_C_REGNUM + && reg_nr <= FV_LAST_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + + for (portion = 0; portion < 4; portion++) + { + regcache_raw_write (regcache, base_regnum + portion, + ((char *) buffer + + REGISTER_RAW_SIZE (base_regnum) * portion)); + } + } + + else if (reg_nr == FPSCR_C_REGNUM) + { + int fpscr_base_regnum; + int sr_base_regnum; + unsigned int fpscr_value; + unsigned int sr_value; + unsigned int old_fpscr_value; + unsigned int old_sr_value; + unsigned int fpscr_c_value; + unsigned int fpscr_mask; + unsigned int sr_mask; + + fpscr_base_regnum = FPSCR_REGNUM; + sr_base_regnum = SR_REGNUM; + + /* FPSCR_C is a very weird register that contains sparse bits + from the FPSCR and the SR architectural registers. + Specifically: */ + /* *INDENT-OFF* */ + /* + FPSRC_C bit + 0 Bit 0 of FPSCR + 1 reserved + 2-17 Bit 2-18 of FPSCR + 18-20 Bits 12,13,14 of SR + 21-31 reserved + */ + /* *INDENT-ON* */ + /* Get value as an int. */ + fpscr_c_value = extract_unsigned_integer (buffer, 4); + + /* Build the new values. */ + fpscr_mask = 0x0003fffd; + sr_mask = 0x001c0000; + + fpscr_value = fpscr_c_value & fpscr_mask; + sr_value = (fpscr_value & sr_mask) >> 6; + + regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer); + old_fpscr_value = extract_unsigned_integer (temp_buffer, 4); + old_fpscr_value &= 0xfffc0002; + fpscr_value |= old_fpscr_value; + store_unsigned_integer (temp_buffer, 4, fpscr_value); + regcache_raw_write (regcache, fpscr_base_regnum, temp_buffer); + + regcache_raw_read (regcache, sr_base_regnum, temp_buffer); + old_sr_value = extract_unsigned_integer (temp_buffer, 4); + old_sr_value &= 0xffff8fff; + sr_value |= old_sr_value; + store_unsigned_integer (temp_buffer, 4, sr_value); + regcache_raw_write (regcache, sr_base_regnum, temp_buffer); + } + + else if (reg_nr == FPUL_C_REGNUM) + { + base_regnum = sh64_compact_reg_base_num (reg_nr); + regcache_raw_write (regcache, base_regnum, buffer); + } +} + +/* Floating point vector of 4 float registers. */ +static void +do_fv_register_info (struct gdbarch *gdbarch, struct ui_file *file, + int fv_regnum) +{ + int first_fp_reg_num = fv_reg_base_num (fv_regnum); + fprintf_filtered (file, "fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", + fv_regnum - FV0_REGNUM, + (int) read_register (first_fp_reg_num), + (int) read_register (first_fp_reg_num + 1), + (int) read_register (first_fp_reg_num + 2), + (int) read_register (first_fp_reg_num + 3)); +} + +/* Floating point vector of 4 float registers, compact mode. */ +static void +do_fv_c_register_info (int fv_regnum) +{ + int first_fp_reg_num = sh64_compact_reg_base_num (fv_regnum); + printf_filtered ("fv%d_c\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", + fv_regnum - FV0_C_REGNUM, + (int) read_register (first_fp_reg_num), + (int) read_register (first_fp_reg_num + 1), + (int) read_register (first_fp_reg_num + 2), + (int) read_register (first_fp_reg_num + 3)); +} + +/* Pairs of single regs. The DR are instead double precision + registers. */ +static void +do_fpp_register_info (int fpp_regnum) +{ + int first_fp_reg_num = fpp_reg_base_num (fpp_regnum); + + printf_filtered ("fpp%d\t0x%08x\t0x%08x\n", + fpp_regnum - FPP0_REGNUM, + (int) read_register (first_fp_reg_num), + (int) read_register (first_fp_reg_num + 1)); +} + +/* Double precision registers. */ +static void +do_dr_register_info (struct gdbarch *gdbarch, struct ui_file *file, + int dr_regnum) +{ + int first_fp_reg_num = dr_reg_base_num (dr_regnum); + + fprintf_filtered (file, "dr%d\t0x%08x%08x\n", + dr_regnum - DR0_REGNUM, + (int) read_register (first_fp_reg_num), + (int) read_register (first_fp_reg_num + 1)); +} + +/* Double precision registers, compact mode. */ +static void +do_dr_c_register_info (int dr_regnum) +{ + int first_fp_reg_num = sh64_compact_reg_base_num (dr_regnum); + + printf_filtered ("dr%d_c\t0x%08x%08x\n", + dr_regnum - DR0_C_REGNUM, + (int) read_register (first_fp_reg_num), + (int) read_register (first_fp_reg_num +1)); +} + +/* General register in compact mode. */ +static void +do_r_c_register_info (int r_c_regnum) +{ + int regnum = sh64_compact_reg_base_num (r_c_regnum); + + printf_filtered ("r%d_c\t0x%08x\n", + r_c_regnum - R0_C_REGNUM, + /*FIXME!!!*/ (int) read_register (regnum)); +} + +/* FIXME:!! THIS SHOULD TAKE CARE OF GETTING THE RIGHT PORTION OF THE + shmedia REGISTERS. */ +/* Control registers, compact mode. */ +static void +do_cr_c_register_info (int cr_c_regnum) +{ + switch (cr_c_regnum) + { + case 237: printf_filtered ("pc_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 238: printf_filtered ("gbr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 239: printf_filtered ("mach_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 240: printf_filtered ("macl_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 241: printf_filtered ("pr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 242: printf_filtered ("t_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 243: printf_filtered ("fpscr_c\t0x%08x\n", (int) read_register (cr_c_regnum)); + break; + case 244: printf_filtered ("fpul_c\t0x%08x\n", (int)read_register (cr_c_regnum)); + break; + } +} + +static void +sh_do_fp_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum) +{ /* do values for FP (float) regs */ + char *raw_buffer; + double flt; /* double extracted from raw hex data */ + int inv; + int j; + + /* Allocate space for the float. */ + raw_buffer = (char *) alloca (register_size (gdbarch, FP0_REGNUM)); + + /* Get the data in raw format. */ + if (!frame_register_read (get_selected_frame (), regnum, raw_buffer)) + error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum)); + + /* Get the register as a number */ + flt = unpack_double (builtin_type_float, raw_buffer, &inv); + + /* Print the name and some spaces. */ + fputs_filtered (REGISTER_NAME (regnum), file); + print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), file); + + /* Print the value. */ + if (inv) + fprintf_filtered (file, "<invalid float>"); + else + fprintf_filtered (file, "%-10.9g", flt); + + /* Print the fp register as hex. */ + fprintf_filtered (file, "\t(raw 0x"); + for (j = 0; j < register_size (gdbarch, regnum); j++) + { + register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j + : register_size (gdbarch, regnum) - 1 - j; + fprintf_filtered (file, "%02x", (unsigned char) raw_buffer[idx]); + } + fprintf_filtered (file, ")"); + fprintf_filtered (file, "\n"); +} + +static void +sh64_do_pseudo_register (int regnum) +{ + /* All the sh64-compact mode registers are pseudo registers. */ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + + if (regnum < NUM_REGS + || regnum >= NUM_REGS + NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT) + internal_error (__FILE__, __LINE__, + "Invalid pseudo register number %d\n", regnum); + + else if ((regnum >= DR0_REGNUM + && regnum <= DR_LAST_REGNUM)) + do_dr_register_info (current_gdbarch, gdb_stdout, regnum); + + else if ((regnum >= DR0_C_REGNUM + && regnum <= DR_LAST_C_REGNUM)) + do_dr_c_register_info (regnum); + + else if ((regnum >= FV0_REGNUM + && regnum <= FV_LAST_REGNUM)) + do_fv_register_info (current_gdbarch, gdb_stdout, regnum); + + else if ((regnum >= FV0_C_REGNUM + && regnum <= FV_LAST_C_REGNUM)) + do_fv_c_register_info (regnum); + + else if (regnum >= FPP0_REGNUM + && regnum <= FPP_LAST_REGNUM) + do_fpp_register_info (regnum); + + else if (regnum >= R0_C_REGNUM + && regnum <= R_LAST_C_REGNUM) + do_r_c_register_info (regnum); /* FIXME, this function will not print the right format */ + + else if (regnum >= FP0_C_REGNUM + && regnum <= FP_LAST_C_REGNUM) + sh_do_fp_register (current_gdbarch, gdb_stdout, regnum); /* this should work also for pseudoregs */ + + else if (regnum >= PC_C_REGNUM + && regnum <= FPUL_C_REGNUM) + do_cr_c_register_info (regnum); + +} + +static void +sh_do_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum) +{ + char raw_buffer[MAX_REGISTER_SIZE]; + + fputs_filtered (REGISTER_NAME (regnum), file); + print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), file); + + /* Get the data in raw format. */ + if (!frame_register_read (get_selected_frame (), regnum, raw_buffer)) + fprintf_filtered (file, "*value not available*\n"); + + val_print (gdbarch_register_type (gdbarch, regnum), raw_buffer, 0, 0, + file, 'x', 1, 0, Val_pretty_default); + fprintf_filtered (file, "\t"); + val_print (gdbarch_register_type (gdbarch, regnum), raw_buffer, 0, 0, + file, 0, 1, 0, Val_pretty_default); + fprintf_filtered (file, "\n"); +} + +static void +sh_print_register (struct gdbarch *gdbarch, struct ui_file *file, int regnum) +{ + if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS) + internal_error (__FILE__, __LINE__, + "Invalid register number %d\n", regnum); + + else if (regnum >= 0 && regnum < NUM_REGS) + { + if (TYPE_CODE (gdbarch_register_type (gdbarch, regnum)) == TYPE_CODE_FLT) + sh_do_fp_register (gdbarch, file, regnum); /* FP regs */ + else + sh_do_register (gdbarch, file, regnum); /* All other regs */ + } + + else if (regnum < NUM_REGS + NUM_PSEUDO_REGS) + sh64_do_pseudo_register (regnum); +} + +static void +sh_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, + struct frame_info *frame, int regnum, int fpregs) +{ + if (regnum != -1) /* do one specified register */ + { + if (*(REGISTER_NAME (regnum)) == '\0') + error ("Not a valid register for the current processor type"); + + sh_print_register (gdbarch, file, regnum); + } + else + /* do all (or most) registers */ + { + regnum = 0; + while (regnum < NUM_REGS) + { + /* If the register name is empty, it is undefined for this + processor, so don't display anything. */ + if (REGISTER_NAME (regnum) == NULL + || *(REGISTER_NAME (regnum)) == '\0') + { + regnum++; + continue; + } + + if (TYPE_CODE (gdbarch_register_type (gdbarch, regnum)) == TYPE_CODE_FLT) + { + if (fpregs) + { + /* true for "INFO ALL-REGISTERS" command */ + sh_do_fp_register (gdbarch, file, regnum); /* FP regs */ + regnum ++; + } + else + regnum += FP_LAST_REGNUM - FP0_REGNUM; /* skip FP regs */ + } + else + { + sh_do_register (gdbarch, file, regnum); /* All other regs */ + regnum++; + } + } + + if (fpregs) + while (regnum < NUM_REGS + NUM_PSEUDO_REGS) + { + sh64_do_pseudo_register (regnum); + regnum++; + } + } +} + +static void +sh_compact_do_registers_info (int regnum, int fpregs) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); + if (regnum != -1) /* do one specified register */ + { + if (*(REGISTER_NAME (regnum)) == '\0') + error ("Not a valid register for the current processor type"); + + if (regnum >= 0 && regnum < R0_C_REGNUM) + error ("Not a valid register for the current processor mode."); + + sh_print_register (current_gdbarch, gdb_stdout, regnum); + } + else + /* do all compact registers */ + { + regnum = R0_C_REGNUM; + while (regnum < NUM_REGS + NUM_PSEUDO_REGS) + { + sh64_do_pseudo_register (regnum); + regnum++; + } + } +} + +static void +sh64_do_registers_info (int regnum, int fpregs) +{ + if (pc_is_isa32 (get_frame_pc (deprecated_selected_frame))) + sh_print_registers_info (current_gdbarch, gdb_stdout, + deprecated_selected_frame, regnum, fpregs); + else + sh_compact_do_registers_info (regnum, fpregs); +} + +#ifdef SVR4_SHARED_LIBS + +/* Fetch (and possibly build) an appropriate link_map_offsets structure + for native i386 linux targets using the struct offsets defined in + link.h (but without actual reference to that file). + + This makes it possible to access i386-linux shared libraries from + a gdb that was not built on an i386-linux host (for cross debugging). + */ + +struct link_map_offsets * +sh_linux_svr4_fetch_link_map_offsets (void) +{ + static struct link_map_offsets lmo; + static struct link_map_offsets *lmp = 0; + + if (lmp == 0) + { + lmp = &lmo; + + lmo.r_debug_size = 8; /* 20 not actual size but all we need */ + + lmo.r_map_offset = 4; + lmo.r_map_size = 4; + + lmo.link_map_size = 20; /* 552 not actual size but all we need */ + + lmo.l_addr_offset = 0; + lmo.l_addr_size = 4; + + lmo.l_name_offset = 4; + lmo.l_name_size = 4; + + lmo.l_next_offset = 12; + lmo.l_next_size = 4; + + lmo.l_prev_offset = 16; + lmo.l_prev_size = 4; + } + + return lmp; +} +#endif /* SVR4_SHARED_LIBS */ + +gdbarch_init_ftype sh64_gdbarch_init; + +struct gdbarch * +sh64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) +{ + static LONGEST sh64_call_dummy_words[] = {0}; + struct gdbarch *gdbarch; + struct gdbarch_tdep *tdep; + + /* If there is already a candidate, use it. */ + arches = gdbarch_list_lookup_by_info (arches, &info); + if (arches != NULL) + return arches->gdbarch; + + /* None found, create a new architecture from the information + provided. */ + tdep = XMALLOC (struct gdbarch_tdep); + gdbarch = gdbarch_alloc (&info, tdep); + + /* NOTE: cagney/2002-12-06: This can be deleted when this arch is + ready to unwind the PC first (see frame.c:get_prev_frame()). */ + set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default); + + /* Determine the ABI */ + if (info.abfd && bfd_get_arch_size (info.abfd) == 64) + { + /* If the ABI is the 64-bit one, it can only be sh-media. */ + tdep->sh_abi = SH_ABI_64; + set_gdbarch_ptr_bit (gdbarch, 8 * TARGET_CHAR_BIT); + set_gdbarch_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); + } + else + { + /* If the ABI is the 32-bit one it could be either media or + compact. */ + tdep->sh_abi = SH_ABI_32; + set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); + } + + set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); + set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); + set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); + + set_gdbarch_sp_regnum (gdbarch, 15); + set_gdbarch_deprecated_fp_regnum (gdbarch, 14); + + set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh); + set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno); + + set_gdbarch_write_pc (gdbarch, generic_target_write_pc); + + set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue); + set_gdbarch_inner_than (gdbarch, core_addr_lessthan); + set_gdbarch_decr_pc_after_break (gdbarch, 0); + set_gdbarch_function_start_offset (gdbarch, 0); + + set_gdbarch_frame_args_skip (gdbarch, 0); + set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); + set_gdbarch_believe_pcc_promotion (gdbarch, 1); + + set_gdbarch_deprecated_frame_saved_pc (gdbarch, sh_frame_saved_pc); + set_gdbarch_deprecated_saved_pc_after_call (gdbarch, sh_saved_pc_after_call); + set_gdbarch_frame_align (gdbarch, sh_frame_align); + + set_gdbarch_num_pseudo_regs (gdbarch, NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT); + set_gdbarch_fp0_regnum (gdbarch, SIM_SH64_FR0_REGNUM); + set_gdbarch_pc_regnum (gdbarch, 64); + + /* the number of real registers is the same whether we are in + ISA16(compact) or ISA32(media). */ + set_gdbarch_num_regs (gdbarch, SIM_SH64_NR_REGS); + set_gdbarch_deprecated_register_size (gdbarch, 8); /*????*/ + set_gdbarch_deprecated_register_bytes (gdbarch, + ((SIM_SH64_NR_FP_REGS + 1) * 4) + + (SIM_SH64_NR_REGS - SIM_SH64_NR_FP_REGS -1) * 8); + + set_gdbarch_register_name (gdbarch, sh_sh64_register_name); + set_gdbarch_deprecated_register_virtual_type (gdbarch, sh_sh64_register_virtual_type); + set_gdbarch_deprecated_store_return_value (gdbarch, sh64_store_return_value); + set_gdbarch_deprecated_register_raw_size (gdbarch, sh_sh64_register_raw_size); + set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_sh64_register_raw_size); + set_gdbarch_deprecated_register_byte (gdbarch, sh_sh64_register_byte); + /* This seems awfully wrong!*/ + /*set_gdbarch_deprecated_max_register_raw_size (gdbarch, 8);*/ + /* should include the size of the pseudo regs. */ + set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4 * 4); + /* Or should that go in the virtual_size? */ + /*set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 8);*/ + set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 4 * 4); + set_gdbarch_pseudo_register_read (gdbarch, sh64_pseudo_register_read); + set_gdbarch_pseudo_register_write (gdbarch, sh64_pseudo_register_write); + + set_gdbarch_deprecated_do_registers_info (gdbarch, sh64_do_registers_info); + set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh64_nofp_frame_init_saved_regs); + set_gdbarch_breakpoint_from_pc (gdbarch, sh_sh64_breakpoint_from_pc); + set_gdbarch_deprecated_call_dummy_words (gdbarch, sh64_call_dummy_words); + set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (sh64_call_dummy_words)); + + set_gdbarch_deprecated_init_extra_frame_info (gdbarch, sh64_init_extra_frame_info); + set_gdbarch_deprecated_frame_chain (gdbarch, sh64_frame_chain); + set_gdbarch_deprecated_get_saved_register (gdbarch, sh64_get_saved_register); + set_gdbarch_deprecated_extract_return_value (gdbarch, sh64_extract_return_value); + set_gdbarch_deprecated_push_arguments (gdbarch, sh64_push_arguments); + set_gdbarch_deprecated_push_return_address (gdbarch, sh64_push_return_address); + set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp); + set_gdbarch_deprecated_store_struct_return (gdbarch, sh64_store_struct_return); + set_gdbarch_deprecated_extract_struct_value_address (gdbarch, sh64_extract_struct_value_address); + set_gdbarch_use_struct_convention (gdbarch, sh64_use_struct_convention); + set_gdbarch_deprecated_pop_frame (gdbarch, sh64_pop_frame); + set_gdbarch_elf_make_msymbol_special (gdbarch, + sh64_elf_make_msymbol_special); + + /* Hook in ABI-specific overrides, if they have been registered. */ + gdbarch_init_osabi (info, gdbarch); + + return gdbarch; +} |