diff options
Diffstat (limited to 'gdb/sh-tdep.c')
| -rw-r--r-- | gdb/sh-tdep.c | 2185 |
1 files changed, 0 insertions, 2185 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c deleted file mode 100644 index 3f7bc6a1732..00000000000 --- a/gdb/sh-tdep.c +++ /dev/null @@ -1,2185 +0,0 @@ -/* Target-dependent code for Hitachi Super-H, for GDB. - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 - 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 "obstack.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" /* for BEFORE_TEXT_END etc. */ -#include "gdb_string.h" -#include "arch-utils.h" -#include "floatformat.h" -#include "regcache.h" -#include "doublest.h" - -#include "solib-svr4.h" - -#undef XMALLOC -#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE))) - -void (*sh_show_regs) (void); -CORE_ADDR (*skip_prologue_hard_way) (CORE_ADDR); -void (*do_pseudo_register) (int); - -#define SH_DEFAULT_NUM_REGS 59 - -/* 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 char * -sh_generic_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "fpul", "fpscr", - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh3_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1" - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh3e_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "fpul", "fpscr", - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - "ssr", "spc", - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh_dsp_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "dsr", - "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", - "y0", "y1", "", "", "", "", "", "mod", - "", "", - "rs", "re", "", "", "", "", "", "", - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh3_dsp_register_name (int reg_nr) -{ - static char *register_names[] = - { - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - "", "dsr", - "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1", - "y0", "y1", "", "", "", "", "", "mod", - "ssr", "spc", - "rs", "re", "", "", "", "", "", "", - "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b" - "", "", "", "", "", "", "", "", - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static char * -sh_sh4_register_name (int reg_nr) -{ - static char *register_names[] = - { - /* general registers 0-15 */ - "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", - /* 16 - 22 */ - "pc", "pr", "gbr", "vbr", "mach", "macl", "sr", - /* 23, 24 */ - "fpul", "fpscr", - /* floating point registers 25 - 40 */ - "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", - "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", - /* 41, 42 */ - "ssr", "spc", - /* bank 0 43 - 50 */ - "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", - /* bank 1 51 - 58 */ - "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", - /* double precision (pseudo) 59 - 66 */ - "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14", - /* vectors (pseudo) 67 - 70 */ - "fv0", "fv4", "fv8", "fv12", - /* FIXME: missing XF 71 - 86 */ - /* FIXME: missing XD 87 - 94 */ - }; - if (reg_nr < 0) - return NULL; - if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) - return NULL; - return register_names[reg_nr]; -} - -static unsigned char * -sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) -{ - /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */ - static unsigned char breakpoint[] = {0xc3, 0xc3}; - - *lenptr = sizeof (breakpoint); - return breakpoint; -} - -/* 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 - - */ - -/* STS.L PR,@-r15 0100111100100010 - r15-4-->r15, PR-->(r15) */ -#define IS_STS(x) ((x) == 0x4f22) - -/* MOV.L Rm,@-r15 00101111mmmm0110 - r15-4-->r15, Rm-->(R15) */ -#define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) - -#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf) - -/* 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) - -#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00) -#define IS_SHLL_R3(x) ((x) == 0x4300) - -/* ADD r3,r15 0011111100111100 - r15+r3-->r15 */ -#define IS_ADD_R3SP(x) ((x) == 0x3f3c) - -/* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011 - FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011 - FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */ -#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) - -/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 - MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd - MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010 - where Rm is one of r4,r5,r6,r7 which are the argument registers. */ -#define IS_ARG_MOV(x) \ -(((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ - || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \ - || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))) - -/* MOV.L Rm,@(disp,r14) 00011110mmmmdddd - Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */ -#define IS_MOV_TO_R14(x) \ - ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) - -#define FPSCR_SZ (1 << 20) - -/* 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; -} - -/* Here we look at each instruction in the function, and try to guess - where the prologue ends. Unfortunately this is not always - accurate. */ -static CORE_ADDR -sh_skip_prologue_hard_way (CORE_ADDR start_pc) -{ - CORE_ADDR here, end; - int updated_fp = 0; - - if (!start_pc) - return 0; - - for (here = start_pc, end = start_pc + (2 * 28); here < end;) - { - int w = read_memory_integer (here, 2); - here += 2; - if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w) - || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w) - || IS_ARG_MOV (w) || IS_MOV_TO_R14 (w)) - { - start_pc = here; - } - else if (IS_MOV_SP_FP (w)) - { - start_pc = here; - updated_fp = 1; - } - else - /* Don't bail out yet, if we are before the copy of sp. */ - if (updated_fp) - 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 (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 (gdbarch_tdep (current_gdbarch)->PR_REGNUM))); -} - -/* Should call_function allocate stack space for a struct return? */ -static int -sh_use_struct_convention (int gcc_p, struct type *type) -{ - return (TYPE_LENGTH (type) > 1); -} - -/* 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 -sh_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) -{ - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - return print_insn_sh (memaddr, info); - else - return print_insn_shl (memaddr, info); -} - -/* 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 - INIT_EXTRA_FRAME_INFO and 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 -sh_frame_chain (struct frame_info *frame) -{ - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - return frame->frame; /* dummy frame same as caller's frame */ - if (frame->pc && !inside_entry_file (frame->pc)) - return read_memory_integer (FRAME_FP (frame) + frame->extra_info->f_offset, 4); - else - return 0; -} - -/* Find REGNUM on the stack. Otherwise, it's in an active register. One thing - we might want to do here is to check REGNUM against the clobber mask, and - somehow flag it as invalid if it isn't saved on the stack somewhere. This - would provide a graceful failure mode when trying to get the value of - caller-saves registers for an inner frame. */ -static CORE_ADDR -sh_find_callers_reg (struct frame_info *fi, int regnum) -{ - for (; fi; fi = fi->next) - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - /* 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 generic_read_register_dummy (fi->pc, fi->frame, regnum); - else - { - FRAME_INIT_SAVED_REGS (fi); - if (!fi->pc) - return 0; - if (fi->saved_regs[regnum] != 0) - return read_memory_integer (fi->saved_regs[regnum], - REGISTER_RAW_SIZE (regnum)); - } - return read_register (regnum); -} - -/* Put here the code to store, into a struct frame_saved_regs, the - addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: the address we - return for it IS the sp for the next frame. */ -static void -sh_nofp_frame_init_saved_regs (struct frame_info *fi) -{ - int where[NUM_REGS + NUM_PSEUDO_REGS]; - int rn; - int have_fp = 0; - int depth; - int pc; - int opc; - int insn; - int r3_val = 0; - char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); - - if (fi->saved_regs == NULL) - frame_saved_regs_zalloc (fi); - else - memset (fi->saved_regs, 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 (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); - return; - } - - fi->extra_info->leaf_function = 1; - fi->extra_info->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_pc_function_start (fi->pc); - if (!pc) - { - fi->pc = 0; - return; - } - - for (opc = pc + (2 * 28); pc < opc; pc += 2) - { - insn = read_memory_integer (pc, 2); - /* See where the registers will be saved to */ - if (IS_PUSH (insn)) - { - rn = GET_PUSHED_REG (insn); - where[rn] = depth; - depth += 4; - } - else if (IS_STS (insn)) - { - where[gdbarch_tdep (current_gdbarch)->PR_REGNUM] = depth; - /* If we're storing the pr then this isn't a leaf */ - fi->extra_info->leaf_function = 0; - depth += 4; - } - else if (IS_MOV_R3 (insn)) - { - r3_val = ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_SHLL_R3 (insn)) - { - r3_val <<= 1; - } - else if (IS_ADD_R3SP (insn)) - { - depth += -r3_val; - } - else if (IS_ADD_SP (insn)) - { - depth -= ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_MOV_SP_FP (insn)) - break; -#if 0 /* This used to just stop when it found an instruction that - was not considered part of the prologue. Now, we just - keep going looking for likely instructions. */ - else - break; -#endif - } - - /* Now we know how deep things are, we can work out their addresses */ - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - { - if (where[rn] >= 0) - { - if (rn == FP_REGNUM) - have_fp = 1; - - fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; - } - else - { - fi->saved_regs[rn] = 0; - } - } - - if (have_fp) - { - fi->saved_regs[SP_REGNUM] = read_memory_integer (fi->saved_regs[FP_REGNUM], 4); - } - else - { - fi->saved_regs[SP_REGNUM] = fi->frame - 4; - } - - fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; - /* Work out the return pc - either from the saved pr or the pr - value */ -} - -/* 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 - gdbarch_tdep (current_gdbarch)->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 - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2; - return fp_regnum; -} - -static void -sh_fp_frame_init_saved_regs (struct frame_info *fi) -{ - int where[NUM_REGS + NUM_PSEUDO_REGS]; - int rn; - int have_fp = 0; - int depth; - int pc; - int opc; - int insn; - int r3_val = 0; - char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (fi->saved_regs == NULL) - frame_saved_regs_zalloc (fi); - else - memset (fi->saved_regs, 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 (fi->saved_regs, dummy_regs, sizeof (fi->saved_regs)); - return; - } - - fi->extra_info->leaf_function = 1; - fi->extra_info->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_pc_function_start (fi->pc); - if (!pc) - { - fi->pc = 0; - return; - } - - for (opc = pc + (2 * 28); pc < opc; pc += 2) - { - insn = read_memory_integer (pc, 2); - /* See where the registers will be saved to */ - if (IS_PUSH (insn)) - { - rn = GET_PUSHED_REG (insn); - where[rn] = depth; - depth += 4; - } - else if (IS_STS (insn)) - { - where[tdep->PR_REGNUM] = depth; - /* If we're storing the pr then this isn't a leaf */ - fi->extra_info->leaf_function = 0; - depth += 4; - } - else if (IS_MOV_R3 (insn)) - { - r3_val = ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_SHLL_R3 (insn)) - { - r3_val <<= 1; - } - else if (IS_ADD_R3SP (insn)) - { - depth += -r3_val; - } - else if (IS_ADD_SP (insn)) - { - depth -= ((insn & 0xff) ^ 0x80) - 0x80; - } - else if (IS_FMOV (insn)) - { - if (read_register (tdep->FPSCR_REGNUM) & FPSCR_SZ) - { - depth += 8; - } - else - { - depth += 4; - } - } - else if (IS_MOV_SP_FP (insn)) - break; -#if 0 /* This used to just stop when it found an instruction that - was not considered part of the prologue. Now, we just - keep going looking for likely instructions. */ - else - break; -#endif - } - - /* Now we know how deep things are, we can work out their addresses */ - - for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++) - { - if (where[rn] >= 0) - { - if (rn == FP_REGNUM) - have_fp = 1; - - fi->saved_regs[rn] = fi->frame - where[rn] + depth - 4; - } - else - { - fi->saved_regs[rn] = 0; - } - } - - if (have_fp) - { - fi->saved_regs[SP_REGNUM] = - read_memory_integer (fi->saved_regs[FP_REGNUM], 4); - } - else - { - fi->saved_regs[SP_REGNUM] = fi->frame - 4; - } - - fi->extra_info->f_offset = depth - where[FP_REGNUM] - 4; - /* Work out the return pc - either from the saved pr or the pr - value */ -} - -/* Initialize the extra info saved in a FRAME */ -static void -sh_init_extra_frame_info (int fromleaf, struct frame_info *fi) -{ - - fi->extra_info = (struct frame_extra_info *) - frame_obstack_alloc (sizeof (struct frame_extra_info)); - - if (fi->next) - fi->pc = FRAME_SAVED_PC (fi->next); - - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - { - /* We need to setup fi->frame here because run_stack_dummy gets it wrong - by assuming it's always FP. */ - fi->frame = generic_read_register_dummy (fi->pc, fi->frame, - SP_REGNUM); - fi->extra_info->return_pc = generic_read_register_dummy (fi->pc, - fi->frame, - PC_REGNUM); - fi->extra_info->f_offset = -(CALL_DUMMY_LENGTH + 4); - fi->extra_info->leaf_function = 0; - return; - } - else - { - FRAME_INIT_SAVED_REGS (fi); - fi->extra_info->return_pc = - sh_find_callers_reg (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM); - } -} - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ -static CORE_ADDR -sh_extract_struct_value_address (char *regbuf) -{ - return (extract_address ((regbuf), REGISTER_RAW_SIZE (0))); -} - -static CORE_ADDR -sh_frame_saved_pc (struct frame_info *frame) -{ - return ((frame)->extra_info->return_pc); -} - -/* Discard from the stack the innermost frame, - restoring all saved registers. */ -static void -sh_pop_frame (void) -{ - register struct frame_info *frame = get_current_frame (); - register CORE_ADDR fp; - register int regnum; - - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - generic_pop_dummy_frame (); - else - { - fp = FRAME_FP (frame); - 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 (frame->saved_regs[regnum]) - write_register (regnum, - read_memory_integer (frame->saved_regs[regnum], 4)); - - write_register (PC_REGNUM, frame->extra_info->return_pc); - write_register (SP_REGNUM, fp + 4); - } - flush_cached_frames (); -} - -/* 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. */ - -static CORE_ADDR -sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) -{ - int stack_offset, stack_alloc; - int argreg; - int argnum; - struct type *type; - CORE_ADDR regval; - char *val; - char valbuf[4]; - int len; - int odd_sized_struct; - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - /* first force sp to a 4-byte alignment */ - sp = sp & ~3; - - /* 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])) + 3) & ~3); - 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 16 bytes - in four registers available. Loop thru args from first to last. */ - - argreg = tdep->ARG0_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 (len < 4) - { - /* value gets right-justified in the register or stack word */ - memcpy (valbuf + (4 - len), - (char *) VALUE_CONTENTS (args[argnum]), len); - val = valbuf; - } - else - val = (char *) VALUE_CONTENTS (args[argnum]); - - if (len > 4 && (len & 3) != 0) - odd_sized_struct = 1; /* such structs go entirely on stack */ - else - odd_sized_struct = 0; - while (len > 0) - { - if (argreg > tdep->ARGLAST_REGNUM - || odd_sized_struct) - { - /* must go on the stack */ - write_memory (sp + stack_offset, val, 4); - stack_offset += 4; - } - /* NOTE WELL!!!!! This is not an "else if" clause!!! - That's because some *&^%$ things get passed on the stack - AND in the registers! */ - if (argreg <= tdep->ARGLAST_REGNUM) - { - /* there's room in a register */ - regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); - write_register (argreg++, regval); - } - /* Store the value 4 bytes at a time. This means that things - larger than 4 bytes may go partly in registers and partly - on the stack. */ - len -= REGISTER_RAW_SIZE (argreg); - val += REGISTER_RAW_SIZE (argreg); - } - } - 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 -sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - write_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM, CALL_DUMMY_ADDRESS ()); - return sp; -} - -/* Function: fix_call_dummy - Poke the callee function's address into the destination part of - the CALL_DUMMY. The address is actually stored in a data word - following the actualy CALL_DUMMY instructions, which will load - it into a register using PC-relative addressing. This function - expects the CALL_DUMMY to look like this: - - mov.w @(2,PC), R8 - jsr @R8 - nop - trap - <destination> - */ - -#if 0 -void -sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, - struct value **args, struct type *type, int gcc_p) -{ - *(unsigned long *) (dummy + 8) = fun; -} -#endif - -static int -sh_coerce_float_to_double (struct type *formal, struct type *actual) -{ - return 1; -} - -/* 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 -sh_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - int len = TYPE_LENGTH (type); - int return_register = R0_REGNUM; - int offset; - - if (len <= 4) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 4 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else if (len <= 8) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 8 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else - error ("bad size for return value"); -} - -static void -sh3e_sh4_extract_return_value (struct type *type, char *regbuf, char *valbuf) -{ - int return_register; - int offset; - int len = TYPE_LENGTH (type); - - if (TYPE_CODE (type) == TYPE_CODE_FLT) - return_register = FP0_REGNUM; - else - return_register = R0_REGNUM; - - if (len == 8 && TYPE_CODE (type) == TYPE_CODE_FLT) - { - DOUBLEST val; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE) - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, - (char *) regbuf + REGISTER_BYTE (return_register), - &val); - else - floatformat_to_doublest (&floatformat_ieee_double_big, - (char *) regbuf + REGISTER_BYTE (return_register), - &val); - store_floating (valbuf, len, val); - } - else if (len <= 4) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 4 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, regbuf + offset, len); - } - else if (len <= 8) - { - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - offset = REGISTER_BYTE (return_register) + 8 - len; - else - offset = REGISTER_BYTE (return_register); - memcpy (valbuf, 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 -sh_default_store_return_value (struct type *type, char *valbuf) -{ - char buf[32]; /* more than enough... */ - - if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (R0_REGNUM)) - { - /* Add leading zeros to the value. */ - memset (buf, 0, REGISTER_RAW_SIZE (R0_REGNUM)); - memcpy (buf + REGISTER_RAW_SIZE (R0_REGNUM) - TYPE_LENGTH (type), - valbuf, TYPE_LENGTH (type)); - write_register_bytes (REGISTER_BYTE (R0_REGNUM), buf, - REGISTER_RAW_SIZE (R0_REGNUM)); - } - else - write_register_bytes (REGISTER_BYTE (R0_REGNUM), valbuf, - TYPE_LENGTH (type)); -} - -static void -sh3e_sh4_store_return_value (struct type *type, char *valbuf) -{ - if (TYPE_CODE (type) == TYPE_CODE_FLT) - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), - valbuf, TYPE_LENGTH (type)); - else - sh_default_store_return_value (type, valbuf); -} - -/* Print the registers in a form similar to the E7000 */ - -static void -sh_generic_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); -} - -static void -sh3_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); -} - - -static void -sh3e_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - printf_filtered (" FPUL=%08lx FPSCR=%08lx", - (long) read_register (tdep->FPUL_REGNUM), - (long) read_register (tdep->FPSCR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 0), - (long) read_register (FP0_REGNUM + 1), - (long) read_register (FP0_REGNUM + 2), - (long) read_register (FP0_REGNUM + 3), - (long) read_register (FP0_REGNUM + 4), - (long) read_register (FP0_REGNUM + 5), - (long) read_register (FP0_REGNUM + 6), - (long) read_register (FP0_REGNUM + 7)); - printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 8), - (long) read_register (FP0_REGNUM + 9), - (long) read_register (FP0_REGNUM + 10), - (long) read_register (FP0_REGNUM + 11), - (long) read_register (FP0_REGNUM + 12), - (long) read_register (FP0_REGNUM + 13), - (long) read_register (FP0_REGNUM + 14), - (long) read_register (FP0_REGNUM + 15)); -} - -static void -sh3_dsp_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - - printf_filtered (" DSR=%08lx", - (long) read_register (tdep->DSR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", - (long) read_register (tdep->A0G_REGNUM) & 0xff, - (long) read_register (tdep->A0_REGNUM), - (long) read_register (tdep->M0_REGNUM), - (long) read_register (tdep->X0_REGNUM), - (long) read_register (tdep->Y0_REGNUM), - (long) read_register (tdep->RS_REGNUM), - (long) read_register (tdep->MOD_REGNUM)); - printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", - (long) read_register (tdep->A1G_REGNUM) & 0xff, - (long) read_register (tdep->A1_REGNUM), - (long) read_register (tdep->M1_REGNUM), - (long) read_register (tdep->X1_REGNUM), - (long) read_register (tdep->Y1_REGNUM), - (long) read_register (tdep->RE_REGNUM)); -} - -static void -sh4_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - int pr = read_register (tdep->FPSCR_REGNUM) & 0x80000; - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - printf_filtered (" SSR=%08lx SPC=%08lx", - (long) read_register (tdep->SSR_REGNUM), - (long) read_register (tdep->SPC_REGNUM)); - printf_filtered (" FPUL=%08lx FPSCR=%08lx", - (long) read_register (tdep->FPUL_REGNUM), - (long) read_register (tdep->FPSCR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ((pr - ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" - : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 0), - (long) read_register (FP0_REGNUM + 1), - (long) read_register (FP0_REGNUM + 2), - (long) read_register (FP0_REGNUM + 3), - (long) read_register (FP0_REGNUM + 4), - (long) read_register (FP0_REGNUM + 5), - (long) read_register (FP0_REGNUM + 6), - (long) read_register (FP0_REGNUM + 7)); - printf_filtered ((pr - ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n" - : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"), - (long) read_register (FP0_REGNUM + 8), - (long) read_register (FP0_REGNUM + 9), - (long) read_register (FP0_REGNUM + 10), - (long) read_register (FP0_REGNUM + 11), - (long) read_register (FP0_REGNUM + 12), - (long) read_register (FP0_REGNUM + 13), - (long) read_register (FP0_REGNUM + 14), - (long) read_register (FP0_REGNUM + 15)); -} - -static void -sh_dsp_show_regs (void) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n", - paddr (read_register (PC_REGNUM)), - (long) read_register (tdep->SR_REGNUM), - (long) read_register (tdep->PR_REGNUM), - (long) read_register (MACH_REGNUM), - (long) read_register (MACL_REGNUM)); - - printf_filtered ("GBR=%08lx VBR=%08lx", - (long) read_register (GBR_REGNUM), - (long) read_register (VBR_REGNUM)); - - printf_filtered (" DSR=%08lx", - (long) read_register (tdep->DSR_REGNUM)); - - printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (0), - (long) read_register (1), - (long) read_register (2), - (long) read_register (3), - (long) read_register (4), - (long) read_register (5), - (long) read_register (6), - (long) read_register (7)); - printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", - (long) read_register (8), - (long) read_register (9), - (long) read_register (10), - (long) read_register (11), - (long) read_register (12), - (long) read_register (13), - (long) read_register (14), - (long) read_register (15)); - - printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n", - (long) read_register (tdep->A0G_REGNUM) & 0xff, - (long) read_register (tdep->A0_REGNUM), - (long) read_register (tdep->M0_REGNUM), - (long) read_register (tdep->X0_REGNUM), - (long) read_register (tdep->Y0_REGNUM), - (long) read_register (tdep->RS_REGNUM), - (long) read_register (tdep->MOD_REGNUM)); - printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n", - (long) read_register (tdep->A1G_REGNUM) & 0xff, - (long) read_register (tdep->A1_REGNUM), - (long) read_register (tdep->M1_REGNUM), - (long) read_register (tdep->X1_REGNUM), - (long) read_register (tdep->Y1_REGNUM), - (long) read_register (tdep->RE_REGNUM)); -} - -void sh_show_regs_command (char *args, int from_tty) -{ - if (sh_show_regs) - (*sh_show_regs)(); -} - -/* Index within `registers' of the first byte of the space for - register N. */ -static int -sh_default_register_byte (int reg_nr) -{ - return (reg_nr * 4); -} - -static int -sh_sh4_register_byte (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return (dr_reg_base_num (reg_nr) * 4); - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return (fv_reg_base_num (reg_nr) * 4); - else - return (reg_nr * 4); -} - -/* Number of bytes of storage in the actual machine representation for - register REG_NR. */ -static int -sh_default_register_raw_size (int reg_nr) -{ - return 4; -} - -static int -sh_sh4_register_raw_size (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return 8; - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return 16; - else - return 4; -} - -/* Number of bytes of storage in the program's representation - for register N. */ -static int -sh_register_virtual_size (int reg_nr) -{ - return 4; -} - -/* Return the GDB type object for the "standard" data type - of data in register N. */ -static struct type * -sh_sh3e_register_virtual_type (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= FP0_REGNUM - && (reg_nr <= tdep->FP_LAST_REGNUM)) - || (reg_nr == tdep->FPUL_REGNUM)) - return builtin_type_float; - else - return builtin_type_int; -} - -static struct type * -sh_sh4_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_sh4_register_virtual_type (int reg_nr) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if ((reg_nr >= FP0_REGNUM - && (reg_nr <= tdep->FP_LAST_REGNUM)) - || (reg_nr == tdep->FPUL_REGNUM)) - return builtin_type_float; - else if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - return builtin_type_double; - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - return sh_sh4_build_float_register_type (3); - else - return builtin_type_int; -} - -static struct type * -sh_default_register_virtual_type (int reg_nr) -{ - return builtin_type_int; -} - -/* On the sh4, the DRi pseudo registers are problematic if the target - is little endian. When the user writes one of those registers, for - instance with 'ser var $dr0=1', we want the double to be stored - like this: - fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f - fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - - This corresponds to little endian byte order & big endian word - order. However if we let gdb write the register w/o conversion, it - will write fr0 and fr1 this way: - fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f - because it will consider fr0 and fr1 as a single LE stretch of memory. - - To achieve what we want we must force gdb to store things in - floatformat_ieee_double_littlebyte_bigword (which is defined in - include/floatformat.h and libiberty/floatformat.c. - - In case the target is big endian, there is no problem, the - raw bytes will look like: - fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00 - fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00 - - The other pseudo registers (the FVs) also don't pose a problem - because they are stored as 4 individual FP elements. */ - -static void -sh_sh4_register_convert_to_virtual (int regnum, struct type *type, - char *from, char *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - { - DOUBLEST val; - floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val); - store_floating (to, TYPE_LENGTH (type), val); - } - else - error ("sh_register_convert_to_virtual called with non DR register number"); -} - -static void -sh_sh4_register_convert_to_raw (struct type *type, int regnum, - char *from, char *to) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum >= tdep->DR0_REGNUM - && regnum <= tdep->DR_LAST_REGNUM) - { - DOUBLEST val = 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"); -} - -void -sh_pseudo_register_read (int reg_nr, char *buffer) -{ - int base_regnum, portion; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - - /* Build the value in the provided buffer. */ - /* Read the real regs for which this one is an alias. */ - for (portion = 0; portion < 2; portion++) - regcache_read (base_regnum + portion, - temp_buffer - + REGISTER_RAW_SIZE (base_regnum) * portion); - /* We must pay attention to the endiannes. */ - sh_sh4_register_convert_to_virtual (reg_nr, - REGISTER_VIRTUAL_TYPE (reg_nr), - temp_buffer, buffer); - } - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->FV_LAST_REGNUM) - { - base_regnum = fv_reg_base_num (reg_nr); - - /* Read the real regs for which this one is an alias. */ - for (portion = 0; portion < 4; portion++) - regcache_read (base_regnum + portion, - buffer + REGISTER_RAW_SIZE (base_regnum) * portion); - } -} - -static void -sh4_register_read (struct gdbarch *gdbarch, int reg_nr, char *buffer) -{ - if (reg_nr >= 0 && reg_nr < gdbarch_tdep (current_gdbarch)->DR0_REGNUM) - /* It is a regular register. */ - regcache_read (reg_nr, buffer); - else - /* It is a pseudo register and we need to construct its value */ - sh_pseudo_register_read (reg_nr, buffer); -} - -void -sh_pseudo_register_write (int reg_nr, char *buffer) -{ - int base_regnum, portion; - char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (reg_nr >= tdep->DR0_REGNUM - && reg_nr <= tdep->DR_LAST_REGNUM) - { - base_regnum = dr_reg_base_num (reg_nr); - - /* We must pay attention to the endiannes. */ - sh_sh4_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_write (base_regnum + portion, - temp_buffer + REGISTER_RAW_SIZE (base_regnum) * portion); - } - else if (reg_nr >= tdep->FV0_REGNUM - && reg_nr <= tdep->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_write (base_regnum + portion, - buffer + REGISTER_RAW_SIZE (base_regnum) * portion); - } -} - -static void -sh4_register_write (struct gdbarch *gdbarch, int reg_nr, char *buffer) -{ - if (reg_nr >= 0 && reg_nr < gdbarch_tdep (current_gdbarch)->DR0_REGNUM) - /* It is a regular register. */ - regcache_write (reg_nr, buffer); - else - /* It is a pseudo register and we need to construct its value */ - sh_pseudo_register_write (reg_nr, buffer); -} - -/* Floating point vector of 4 float registers. */ -static void -do_fv_register_info (int fv_regnum) -{ - int first_fp_reg_num = fv_reg_base_num (fv_regnum); - printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n", - fv_regnum - gdbarch_tdep (current_gdbarch)->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)); -} - -/* Double precision registers. */ -static void -do_dr_register_info (int dr_regnum) -{ - int first_fp_reg_num = dr_reg_base_num (dr_regnum); - - printf_filtered ("dr%d\t0x%08x%08x\n", - dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM, - (int) read_register (first_fp_reg_num), - (int) read_register (first_fp_reg_num + 1)); -} - -static void -sh_do_pseudo_register (int regnum) -{ - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - - if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS) - internal_error (__FILE__, __LINE__, - "Invalid pseudo register number %d\n", regnum); - else if (regnum >= tdep->DR0_REGNUM - && regnum < tdep->DR_LAST_REGNUM) - do_dr_register_info (regnum); - else if (regnum >= tdep->FV0_REGNUM - && regnum <= tdep->FV_LAST_REGNUM) - do_fv_register_info (regnum); -} - -static void -sh_do_fp_register (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_RAW_SIZE (FP0_REGNUM)); - - /* Get the data in raw format. */ - if (read_relative_register_raw_bytes (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), gdb_stdout); - print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); - - /* Print the value. */ - if (inv) - printf_filtered ("<invalid float>"); - else - printf_filtered ("%-10.9g", flt); - - /* Print the fp register as hex. */ - printf_filtered ("\t(raw 0x"); - for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++) - { - register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j - : REGISTER_RAW_SIZE (regnum) - 1 - j; - printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); - } - printf_filtered (")"); - printf_filtered ("\n"); -} - -static void -sh_do_register (int regnum) -{ - char raw_buffer[MAX_REGISTER_RAW_SIZE]; - - fputs_filtered (REGISTER_NAME (regnum), gdb_stdout); - print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout); - - /* Get the data in raw format. */ - if (read_relative_register_raw_bytes (regnum, raw_buffer)) - printf_filtered ("*value not available*\n"); - - val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, - gdb_stdout, 'x', 1, 0, Val_pretty_default); - printf_filtered ("\t"); - val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0, - gdb_stdout, 0, 1, 0, Val_pretty_default); - printf_filtered ("\n"); -} - -static void -sh_print_register (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 (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) - sh_do_fp_register (regnum); /* FP regs */ - else - sh_do_register (regnum); /* All other regs */ - } - - else if (regnum < NUM_REGS + NUM_PSEUDO_REGS) - do_pseudo_register (regnum); -} - -void -sh_do_registers_info (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 (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 (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT) - { - if (fpregs) - { - /* true for "INFO ALL-REGISTERS" command */ - sh_do_fp_register (regnum); /* FP regs */ - regnum ++; - } - else - regnum += (gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */ - } - else - { - sh_do_register (regnum); /* All other regs */ - regnum++; - } - } - - if (fpregs) - while (regnum < NUM_REGS + NUM_PSEUDO_REGS) - { - do_pseudo_register (regnum); - regnum++; - } - } -} - -#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 */ - -static gdbarch_init_ftype sh_gdbarch_init; - -static struct gdbarch * -sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) -{ - static LONGEST sh_call_dummy_words[] = {0}; - struct gdbarch *gdbarch; - struct gdbarch_tdep *tdep; - gdbarch_register_name_ftype *sh_register_name; - gdbarch_store_return_value_ftype *sh_store_return_value; - gdbarch_register_virtual_type_ftype *sh_register_virtual_type; - - /* Find a candidate among the list of pre-declared architectures. */ - 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); - - /* Initialize the register numbers that are not common to all the - variants to -1, if necessary thse will be overwritten in the case - statement below. */ - tdep->FPUL_REGNUM = -1; - tdep->FPSCR_REGNUM = -1; - tdep->PR_REGNUM = 17; - tdep->SR_REGNUM = 22; - tdep->DSR_REGNUM = -1; - tdep->FP_LAST_REGNUM = -1; - tdep->A0G_REGNUM = -1; - tdep->A0_REGNUM = -1; - tdep->A1G_REGNUM = -1; - tdep->A1_REGNUM = -1; - tdep->M0_REGNUM = -1; - tdep->M1_REGNUM = -1; - tdep->X0_REGNUM = -1; - tdep->X1_REGNUM = -1; - tdep->Y0_REGNUM = -1; - tdep->Y1_REGNUM = -1; - tdep->MOD_REGNUM = -1; - tdep->RS_REGNUM = -1; - tdep->RE_REGNUM = -1; - tdep->SSR_REGNUM = -1; - tdep->SPC_REGNUM = -1; - tdep->DR0_REGNUM = -1; - tdep->DR_LAST_REGNUM = -1; - tdep->FV0_REGNUM = -1; - tdep->FV_LAST_REGNUM = -1; - tdep->ARG0_REGNUM = 4; - tdep->ARGLAST_REGNUM = 7; - tdep->RETURN_REGNUM = 0; - tdep->FLOAT_ARGLAST_REGNUM = -1; - - set_gdbarch_fp0_regnum (gdbarch, -1); - set_gdbarch_num_pseudo_regs (gdbarch, 0); - set_gdbarch_max_register_raw_size (gdbarch, 4); - set_gdbarch_max_register_virtual_size (gdbarch, 4); - set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_num_regs (gdbarch, SH_DEFAULT_NUM_REGS); - set_gdbarch_sp_regnum (gdbarch, 15); - set_gdbarch_fp_regnum (gdbarch, 14); - set_gdbarch_pc_regnum (gdbarch, 16); - set_gdbarch_register_size (gdbarch, 4); - set_gdbarch_register_bytes (gdbarch, SH_DEFAULT_NUM_REGS * 4); - set_gdbarch_do_registers_info (gdbarch, sh_do_registers_info); - set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); - set_gdbarch_frame_chain (gdbarch, sh_frame_chain); - set_gdbarch_get_saved_register (gdbarch, generic_get_saved_register); - set_gdbarch_init_extra_frame_info (gdbarch, sh_init_extra_frame_info); - set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value); - set_gdbarch_push_arguments (gdbarch, sh_push_arguments); - set_gdbarch_store_struct_return (gdbarch, sh_store_struct_return); - set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention); - set_gdbarch_extract_struct_value_address (gdbarch, sh_extract_struct_value_address); - set_gdbarch_pop_frame (gdbarch, sh_pop_frame); - set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh); - skip_prologue_hard_way = sh_skip_prologue_hard_way; - do_pseudo_register = sh_do_pseudo_register; - - switch (info.bfd_arch_info->mach) - { - case bfd_mach_sh: - sh_register_name = sh_sh_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - case bfd_mach_sh2: - sh_register_name = sh_sh_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - case bfd_mach_sh_dsp: - sh_register_name = sh_sh_dsp_register_name; - sh_show_regs = sh_dsp_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - tdep->DSR_REGNUM = 24; - tdep->A0G_REGNUM = 25; - tdep->A0_REGNUM = 26; - tdep->A1G_REGNUM = 27; - tdep->A1_REGNUM = 28; - tdep->M0_REGNUM = 29; - tdep->M1_REGNUM = 30; - tdep->X0_REGNUM = 31; - tdep->X1_REGNUM = 32; - tdep->Y0_REGNUM = 33; - tdep->Y1_REGNUM = 34; - tdep->MOD_REGNUM = 40; - tdep->RS_REGNUM = 43; - tdep->RE_REGNUM = 44; - break; - case bfd_mach_sh3: - sh_register_name = sh_sh3_register_name; - sh_show_regs = sh3_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh3e: - sh_register_name = sh_sh3e_register_name; - sh_show_regs = sh3e_show_regs; - sh_store_return_value = sh3e_sh4_store_return_value; - sh_register_virtual_type = sh_sh3e_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); - set_gdbarch_fp0_regnum (gdbarch, 25); - tdep->FPUL_REGNUM = 23; - tdep->FPSCR_REGNUM = 24; - tdep->FP_LAST_REGNUM = 40; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh3_dsp: - sh_register_name = sh_sh3_dsp_register_name; - sh_show_regs = sh3_dsp_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - tdep->DSR_REGNUM = 24; - tdep->A0G_REGNUM = 25; - tdep->A0_REGNUM = 26; - tdep->A1G_REGNUM = 27; - tdep->A1_REGNUM = 28; - tdep->M0_REGNUM = 29; - tdep->M1_REGNUM = 30; - tdep->X0_REGNUM = 31; - tdep->X1_REGNUM = 32; - tdep->Y0_REGNUM = 33; - tdep->Y1_REGNUM = 34; - tdep->MOD_REGNUM = 40; - tdep->RS_REGNUM = 43; - tdep->RE_REGNUM = 44; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - break; - case bfd_mach_sh4: - sh_register_name = sh_sh4_register_name; - sh_show_regs = sh4_show_regs; - sh_store_return_value = sh3e_sh4_store_return_value; - sh_register_virtual_type = sh_sh4_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); - set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); - set_gdbarch_fp0_regnum (gdbarch, 25); - set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_sh4_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_sh4_register_byte); - set_gdbarch_num_pseudo_regs (gdbarch, 12); - set_gdbarch_max_register_raw_size (gdbarch, 4 * 4); - set_gdbarch_max_register_virtual_size (gdbarch, 4 * 4); - set_gdbarch_register_read (gdbarch, sh4_register_read); - set_gdbarch_register_write (gdbarch, sh4_register_write); - tdep->FPUL_REGNUM = 23; - tdep->FPSCR_REGNUM = 24; - tdep->FP_LAST_REGNUM = 40; - tdep->SSR_REGNUM = 41; - tdep->SPC_REGNUM = 42; - tdep->DR0_REGNUM = 59; - tdep->DR_LAST_REGNUM = 66; - tdep->FV0_REGNUM = 67; - tdep->FV_LAST_REGNUM = 70; - break; - default: - sh_register_name = sh_generic_register_name; - sh_show_regs = sh_generic_show_regs; - sh_store_return_value = sh_default_store_return_value; - sh_register_virtual_type = sh_default_register_virtual_type; - set_gdbarch_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs); - set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); - set_gdbarch_register_byte (gdbarch, sh_default_register_byte); - break; - } - - set_gdbarch_read_pc (gdbarch, generic_target_read_pc); - set_gdbarch_write_pc (gdbarch, generic_target_write_pc); - set_gdbarch_read_fp (gdbarch, generic_target_read_fp); - set_gdbarch_write_fp (gdbarch, generic_target_write_fp); - set_gdbarch_read_sp (gdbarch, generic_target_read_sp); - set_gdbarch_write_sp (gdbarch, generic_target_write_sp); - - set_gdbarch_register_name (gdbarch, sh_register_name); - set_gdbarch_register_virtual_type (gdbarch, sh_register_virtual_type); - - 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, 16 * TARGET_CHAR_BIT);/*??should be 8?*/ - - set_gdbarch_use_generic_dummy_frames (gdbarch, 1); - set_gdbarch_call_dummy_length (gdbarch, 0); - set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); - set_gdbarch_call_dummy_address (gdbarch, entry_point_address); - set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); /*???*/ - set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); - set_gdbarch_call_dummy_start_offset (gdbarch, 0); - set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy); - set_gdbarch_call_dummy_words (gdbarch, sh_call_dummy_words); - set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words)); - set_gdbarch_call_dummy_p (gdbarch, 1); - set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0); - set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); - set_gdbarch_coerce_float_to_double (gdbarch, - sh_coerce_float_to_double); - - set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); - set_gdbarch_push_return_address (gdbarch, sh_push_return_address); - - set_gdbarch_store_return_value (gdbarch, sh_store_return_value); - 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_frame_chain_valid (gdbarch, generic_file_frame_chain_valid); - set_gdbarch_frame_saved_pc (gdbarch, sh_frame_saved_pc); - set_gdbarch_frame_args_address (gdbarch, default_frame_address); - set_gdbarch_frame_locals_address (gdbarch, default_frame_address); - set_gdbarch_saved_pc_after_call (gdbarch, sh_saved_pc_after_call); - set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); - set_gdbarch_believe_pcc_promotion (gdbarch, 1); - - return gdbarch; -} - -void -_initialize_sh_tdep (void) -{ - struct cmd_list_element *c; - - register_gdbarch_init (bfd_arch_sh, sh_gdbarch_init); - - add_com ("regs", class_vars, sh_show_regs_command, "Print all registers"); -} |