diff options
Diffstat (limited to 'gdb/v850-tdep.c')
| -rw-r--r-- | gdb/v850-tdep.c | 291 |
1 files changed, 152 insertions, 139 deletions
diff --git a/gdb/v850-tdep.c b/gdb/v850-tdep.c index 6bb8a70474e..c6e605b423c 100644 --- a/gdb/v850-tdep.c +++ b/gdb/v850-tdep.c @@ -1,21 +1,22 @@ /* Target-dependent code for the NEC V850 for GDB, the GNU debugger. Copyright 1996, Free Software Foundation, Inc. -This file is part of GDB. + 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 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. + 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. */ + 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. */ #include "defs.h" #include "frame.h" @@ -47,37 +48,49 @@ static char *v850e_reg_names[] = char **v850_register_names = v850_generic_reg_names; struct + { + char **regnames; + int mach; + } +v850_processor_type_table[] = { - char **regnames; - int mach; -} v850_processor_type_table[] = -{ - { v850_generic_reg_names, bfd_mach_v850 }, - { v850e_reg_names, bfd_mach_v850e }, - { v850e_reg_names, bfd_mach_v850ea }, - { NULL, 0 } + { + v850_generic_reg_names, bfd_mach_v850 + } + , + { + v850e_reg_names, bfd_mach_v850e + } + , + { + v850e_reg_names, bfd_mach_v850ea + } + , + { + NULL, 0 + } }; /* Info gleaned from scanning a function's prologue. */ struct pifsr /* Info about one saved reg */ -{ - int framereg; /* Frame reg (SP or FP) */ - int offset; /* Offset from framereg */ - int cur_frameoffset; /* Current frameoffset */ - int reg; /* Saved register number */ -}; + { + int framereg; /* Frame reg (SP or FP) */ + int offset; /* Offset from framereg */ + int cur_frameoffset; /* Current frameoffset */ + int reg; /* Saved register number */ + }; struct prologue_info -{ - int framereg; - int frameoffset; - int start_function; - struct pifsr *pifsrs; -}; + { + int framereg; + int frameoffset; + int start_function; + struct pifsr *pifsrs; + }; -static CORE_ADDR v850_scan_prologue PARAMS ((CORE_ADDR pc, - struct prologue_info *fs)); +static CORE_ADDR v850_scan_prologue PARAMS ((CORE_ADDR pc, + struct prologue_info * fs)); /* Should call_function allocate stack space for a struct return? */ @@ -88,11 +101,11 @@ v850_use_struct_convention (gcc_p, type) { return (TYPE_NFIELDS (type) > 1 || TYPE_LENGTH (type) > 4); } - + /* Structure for mapping bits in register lists to register numbers. */ -struct reg_list +struct reg_list { long mask; int regno; @@ -101,7 +114,7 @@ struct reg_list /* Helper function for v850_scan_prologue to handle prepare instruction. */ static void -handle_prepare (int insn, int insn2, CORE_ADDR *current_pc_ptr, +handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr, struct prologue_info *pi, struct pifsr **pifsr_ptr) { @@ -110,25 +123,25 @@ handle_prepare (int insn, int insn2, CORE_ADDR *current_pc_ptr, long next = insn2 & 0xffff; long list12 = ((insn & 1) << 16) + (next & 0xffe0); long offset = (insn & 0x3e) << 1; - static struct reg_list reg_table [] = + static struct reg_list reg_table[] = { - { 0x00800, 20 }, /* r20 */ - { 0x00400, 21 }, /* r21 */ - { 0x00200, 22 }, /* r22 */ - { 0x00100, 23 }, /* r23 */ - { 0x08000, 24 }, /* r24 */ - { 0x04000, 25 }, /* r25 */ - { 0x02000, 26 }, /* r26 */ - { 0x01000, 27 }, /* r27 */ - { 0x00080, 28 }, /* r28 */ - { 0x00040, 29 }, /* r29 */ - { 0x10000, 30 }, /* ep */ - { 0x00020, 31 }, /* lp */ - { 0, 0 } /* end of table */ + {0x00800, 20}, /* r20 */ + {0x00400, 21}, /* r21 */ + {0x00200, 22}, /* r22 */ + {0x00100, 23}, /* r23 */ + {0x08000, 24}, /* r24 */ + {0x04000, 25}, /* r25 */ + {0x02000, 26}, /* r26 */ + {0x01000, 27}, /* r27 */ + {0x00080, 28}, /* r28 */ + {0x00040, 29}, /* r29 */ + {0x10000, 30}, /* ep */ + {0x00020, 31}, /* lp */ + {0, 0} /* end of table */ }; int i; - if ((next & 0x1f) == 0x0b) /* skip imm16 argument */ + if ((next & 0x1f) == 0x0b) /* skip imm16 argument */ current_pc += 2; else if ((next & 0x1f) == 0x13) /* skip imm16 argument */ current_pc += 2; @@ -156,9 +169,9 @@ handle_prepare (int insn, int insn2, CORE_ADDR *current_pc_ptr, pifsr->reg = reg; pifsr->offset = offset; pifsr->cur_frameoffset = pi->frameoffset; - #ifdef DEBUG +#ifdef DEBUG printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset); - #endif +#endif pifsr++; } } @@ -179,51 +192,51 @@ handle_prepare (int insn, int insn2, CORE_ADDR *current_pc_ptr, static void handle_pushm (int insn, int insn2, struct prologue_info *pi, - struct pifsr **pifsr_ptr) + struct pifsr **pifsr_ptr) { struct pifsr *pifsr = *pifsr_ptr; long list12 = ((insn & 0x0f) << 16) + (insn2 & 0xfff0); long offset = 0; - static struct reg_list pushml_reg_table [] = + static struct reg_list pushml_reg_table[] = { - { 0x80000, PS_REGNUM }, /* PSW */ - { 0x40000, 1 }, /* r1 */ - { 0x20000, 2 }, /* r2 */ - { 0x10000, 3 }, /* r3 */ - { 0x00800, 4 }, /* r4 */ - { 0x00400, 5 }, /* r5 */ - { 0x00200, 6 }, /* r6 */ - { 0x00100, 7 }, /* r7 */ - { 0x08000, 8 }, /* r8 */ - { 0x04000, 9 }, /* r9 */ - { 0x02000, 10 }, /* r10 */ - { 0x01000, 11 }, /* r11 */ - { 0x00080, 12 }, /* r12 */ - { 0x00040, 13 }, /* r13 */ - { 0x00020, 14 }, /* r14 */ - { 0x00010, 15 }, /* r15 */ - { 0, 0 } /* end of table */ + {0x80000, PS_REGNUM}, /* PSW */ + {0x40000, 1}, /* r1 */ + {0x20000, 2}, /* r2 */ + {0x10000, 3}, /* r3 */ + {0x00800, 4}, /* r4 */ + {0x00400, 5}, /* r5 */ + {0x00200, 6}, /* r6 */ + {0x00100, 7}, /* r7 */ + {0x08000, 8}, /* r8 */ + {0x04000, 9}, /* r9 */ + {0x02000, 10}, /* r10 */ + {0x01000, 11}, /* r11 */ + {0x00080, 12}, /* r12 */ + {0x00040, 13}, /* r13 */ + {0x00020, 14}, /* r14 */ + {0x00010, 15}, /* r15 */ + {0, 0} /* end of table */ }; - static struct reg_list pushmh_reg_table [] = + static struct reg_list pushmh_reg_table[] = { - { 0x80000, 16 }, /* r16 */ - { 0x40000, 17 }, /* r17 */ - { 0x20000, 18 }, /* r18 */ - { 0x10000, 19 }, /* r19 */ - { 0x00800, 20 }, /* r20 */ - { 0x00400, 21 }, /* r21 */ - { 0x00200, 22 }, /* r22 */ - { 0x00100, 23 }, /* r23 */ - { 0x08000, 24 }, /* r24 */ - { 0x04000, 25 }, /* r25 */ - { 0x02000, 26 }, /* r26 */ - { 0x01000, 27 }, /* r27 */ - { 0x00080, 28 }, /* r28 */ - { 0x00040, 29 }, /* r29 */ - { 0x00010, 30 }, /* r30 */ - { 0x00020, 31 }, /* r31 */ - { 0, 0 } /* end of table */ + {0x80000, 16}, /* r16 */ + {0x40000, 17}, /* r17 */ + {0x20000, 18}, /* r18 */ + {0x10000, 19}, /* r19 */ + {0x00800, 20}, /* r20 */ + {0x00400, 21}, /* r21 */ + {0x00200, 22}, /* r22 */ + {0x00100, 23}, /* r23 */ + {0x08000, 24}, /* r24 */ + {0x04000, 25}, /* r25 */ + {0x02000, 26}, /* r26 */ + {0x01000, 27}, /* r27 */ + {0x00080, 28}, /* r28 */ + {0x00040, 29}, /* r29 */ + {0x00010, 30}, /* r30 */ + {0x00020, 31}, /* r31 */ + {0, 0} /* end of table */ }; struct reg_list *reg_table; int i; @@ -255,9 +268,9 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi, pifsr->reg = reg; pifsr->offset = offset; pifsr->cur_frameoffset = pi->frameoffset; - #ifdef DEBUG +#ifdef DEBUG printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset); - #endif +#endif pifsr++; } } @@ -269,10 +282,10 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi, /* Set result parameters. */ *pifsr_ptr = pifsr; } + - /* Function: scan_prologue Scan the prologue of the function that contains PC, and record what we find in PI. PI->fsr must be zeroed by the called. Returns the @@ -329,7 +342,7 @@ v850_scan_prologue (pc, pi) /* Now, search the prologue looking for instructions that setup fp, save rp, adjust sp and such. We also record the frame offset of any saved - registers. */ + registers. */ pi->frameoffset = 0; pi->framereg = SP_REGNUM; @@ -343,21 +356,21 @@ v850_scan_prologue (pc, pi) #ifdef DEBUG printf_filtered ("Current_pc = 0x%.8lx, prologue_end = 0x%.8lx\n", - (long)func_addr, (long)prologue_end); + (long) func_addr, (long) prologue_end); #endif - for (current_pc = func_addr; current_pc < prologue_end; ) + for (current_pc = func_addr; current_pc < prologue_end;) { int insn, insn2; #ifdef DEBUG - printf_filtered ("0x%.8lx ", (long)current_pc); + printf_filtered ("0x%.8lx ", (long) current_pc); (*tm_print_insn) (current_pc, &tm_print_insn_info); #endif insn = read_memory_unsigned_integer (current_pc, 2); current_pc += 2; - if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */ + if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */ { insn2 = read_memory_unsigned_integer (current_pc, 2); current_pc += 2; @@ -365,9 +378,9 @@ v850_scan_prologue (pc, pi) if ((insn & 0xffc0) == ((10 << 11) | 0x0780) && !regsave_func_p) { /* jarl <func>,10 */ - long low_disp = insn2 & ~ (long) 1; + long low_disp = insn2 & ~(long) 1; long disp = (((((insn & 0x3f) << 16) + low_disp) - & ~ (long) 1) ^ 0x00200000) - 0x00200000; + & ~(long) 1) ^ 0x00200000) - 0x00200000; save_pc = current_pc; save_end = prologue_end; @@ -375,14 +388,14 @@ v850_scan_prologue (pc, pi) current_pc += disp - 4; prologue_end = (current_pc + (2 * 3) /* moves to/from ep */ - + 4 /* addi <const>,sp,sp */ - + 2 /* jmp [r10] */ + + 4 /* addi <const>,sp,sp */ + + 2 /* jmp [r10] */ + (2 * 12) /* sst.w to save r2, r20-r29, r31 */ + 20); /* slop area */ #ifdef DEBUG printf_filtered ("\tfound jarl <func>,r10, disp = %ld, low_disp = %ld, new pc = 0x%.8lx\n", - disp, low_disp, (long)current_pc + 2); + disp, low_disp, (long) current_pc + 2); #endif continue; } @@ -397,12 +410,12 @@ v850_scan_prologue (pc, pi) current_pc = ctbp + (read_memory_unsigned_integer (adr, 2) & 0xffff); prologue_end = (current_pc + (2 * 3) /* prepare list2,imm5,sp/imm */ - + 4 /* ctret */ + + 4 /* ctret */ + 20); /* slop area */ #ifdef DEBUG printf_filtered ("\tfound callt, ctbp = 0x%.8lx, adr = %.8lx, new pc = 0x%.8lx\n", - ctbp, adr, (long)current_pc); + ctbp, adr, (long) current_pc); #endif continue; } @@ -443,7 +456,7 @@ v850_scan_prologue (pc, pi) #ifdef DEBUG printf_filtered ("\n"); #endif - break; /* Ran into end of prologue */ + break; /* Ran into end of prologue */ } else if ((insn & 0xffe0) == ((SP_REGNUM << 11) | 0x0240)) /* add <imm>,sp */ @@ -460,19 +473,19 @@ v850_scan_prologue (pc, pi) r12_tmp = insn2 << 16; else if (insn == ((R12_REGNUM << 11) | 0x0620 | R12_REGNUM)) /* movea lo(const),r12,r12 */ r12_tmp += insn2; - else if (insn == ((SP_REGNUM << 11) | 0x01c0 | R12_REGNUM) && r12_tmp) /* add r12,sp */ + else if (insn == ((SP_REGNUM << 11) | 0x01c0 | R12_REGNUM) && r12_tmp) /* add r12,sp */ pi->frameoffset = r12_tmp; else if (insn == ((EP_REGNUM << 11) | 0x0000 | SP_REGNUM)) /* mov sp,ep */ ep_used = 1; else if (insn == ((EP_REGNUM << 11) | 0x0000 | R1_REGNUM)) /* mov r1,ep */ ep_used = 0; - else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */ + else if (((insn & 0x07ff) == (0x0760 | SP_REGNUM) /* st.w <reg>,<offset>[sp] */ || (fp_used && (insn & 0x07ff) == (0x0760 | FP_RAW_REGNUM))) /* st.w <reg>,<offset>[fp] */ && pifsr && (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM) || (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM) - || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) + || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) { pifsr->reg = reg; pifsr->offset = insn2 & ~1; @@ -483,12 +496,12 @@ v850_scan_prologue (pc, pi) pifsr++; } - else if (ep_used /* sst.w <reg>,<offset>[ep] */ + else if (ep_used /* sst.w <reg>,<offset>[ep] */ && ((insn & 0x0781) == 0x0501) && pifsr && (((reg = (insn >> 11) & 0x1f) >= SAVE1_START_REGNUM && reg <= SAVE1_END_REGNUM) || (reg >= SAVE2_START_REGNUM && reg <= SAVE2_END_REGNUM) - || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) + || (reg >= SAVE3_START_REGNUM && reg <= SAVE3_END_REGNUM))) { pifsr->reg = reg; pifsr->offset = (insn & 0x007e) << 1; @@ -516,7 +529,7 @@ v850_scan_prologue (pc, pi) #ifdef DEBUG printf_filtered ("Saved register r%d, offset = %d, framereg = r%d\n", - pifsr_tmp->reg, pifsr_tmp->offset, pifsr_tmp->framereg); + pifsr_tmp->reg, pifsr_tmp->offset, pifsr_tmp->framereg); #endif } @@ -555,7 +568,7 @@ v850_init_extra_frame_info (fi) /* The call dummy doesn't save any registers on the stack, so we can return now. */ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return; + return; pi.pifsrs = pifsrs; @@ -591,8 +604,8 @@ v850_frame_chain (fi) callers_pc = FRAME_SAVED_PC (fi); /* If caller is a call-dummy, then our FP bears no relation to his FP! */ fp = v850_find_callers_reg (fi, FP_RAW_REGNUM); - if (PC_IN_CALL_DUMMY(callers_pc, fp, fp)) - return fp; /* caller is call-dummy: return oldest value of FP */ + if (PC_IN_CALL_DUMMY (callers_pc, fp, fp)) + return fp; /* caller is call-dummy: return oldest value of FP */ /* Caller is NOT a call-dummy, so everything else should just work. Even if THIS frame is a call-dummy! */ @@ -626,8 +639,8 @@ v850_find_callers_reg (fi, regnum) if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) return generic_read_register_dummy (fi->pc, fi->frame, regnum); else if (fi->fsr.regs[regnum] != 0) - return read_memory_unsigned_integer (fi->fsr.regs[regnum], - REGISTER_RAW_SIZE(regnum)); + return read_memory_unsigned_integer (fi->fsr.regs[regnum], + REGISTER_RAW_SIZE (regnum)); return read_register (regnum); } @@ -672,7 +685,7 @@ v850_pop_frame (frame) { int regnum; - if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame)) + if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) generic_pop_dummy_frame (); else { @@ -681,8 +694,8 @@ v850_pop_frame (frame) for (regnum = 0; regnum < NUM_REGS; regnum++) if (frame->fsr.regs[regnum] != 0) write_register (regnum, - read_memory_unsigned_integer (frame->fsr.regs[regnum], - REGISTER_RAW_SIZE(regnum))); + read_memory_unsigned_integer (frame->fsr.regs[regnum], + REGISTER_RAW_SIZE (regnum))); write_register (SP_REGNUM, FRAME_FP (frame)); } @@ -699,7 +712,7 @@ v850_pop_frame (frame) in as a secret first argument (always in R6). Stack space for the args has NOT been allocated: that job is up to us. - */ + */ CORE_ADDR v850_push_arguments (nargs, args, sp, struct_return, struct_addr) @@ -719,15 +732,15 @@ v850_push_arguments (nargs, args, sp, struct_return, struct_addr) /* Now make space on the stack for the args. */ for (argnum = 0; argnum < nargs; argnum++) - len += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + 3) & ~3); - sp -= len; /* possibly over-allocating, but it works... */ - /* (you might think we could allocate 16 bytes */ - /* less, but the ABI seems to use it all! ) */ + len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); + sp -= len; /* possibly over-allocating, but it works... */ + /* (you might think we could allocate 16 bytes */ + /* less, but the ABI seems to use it all! ) */ argreg = ARG0_REGNUM; /* the struct_return pointer occupies the first parameter-passing reg */ if (struct_return) - write_register (argreg++, struct_addr); + write_register (argreg++, struct_addr); stack_offset = 16; /* The offset onto the stack at which we will start copying parameters @@ -741,7 +754,7 @@ v850_push_arguments (nargs, args, sp, struct_return, struct_addr) { int len; char *val; - char valbuf[REGISTER_RAW_SIZE(ARG0_REGNUM)]; + char valbuf[REGISTER_RAW_SIZE (ARG0_REGNUM)]; if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT && TYPE_LENGTH (VALUE_TYPE (*args)) > 8) @@ -753,11 +766,11 @@ v850_push_arguments (nargs, args, sp, struct_return, struct_addr) else { len = TYPE_LENGTH (VALUE_TYPE (*args)); - val = (char *)VALUE_CONTENTS (*args); + val = (char *) VALUE_CONTENTS (*args); } while (len > 0) - if (argreg <= ARGLAST_REGNUM) + if (argreg <= ARGLAST_REGNUM) { CORE_ADDR regval; @@ -784,7 +797,7 @@ v850_push_arguments (nargs, args, sp, struct_return, struct_addr) /* 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 */ - + CORE_ADDR v850_push_return_address (pc, sp) CORE_ADDR pc; @@ -793,7 +806,7 @@ v850_push_return_address (pc, sp) write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ()); return sp; } - + /* Function: frame_saved_pc Find the caller of this frame. We do this by seeing if RP_REGNUM is saved in the stack anywhere, otherwise we get it from the @@ -805,8 +818,8 @@ CORE_ADDR v850_frame_saved_pc (fi) struct frame_info *fi; { - if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy(fi->pc, fi->frame, PC_REGNUM); + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); else return v850_find_callers_reg (fi, RP_REGNUM); } @@ -815,9 +828,9 @@ v850_frame_saved_pc (fi) /* Function: fix_call_dummy Pokes the callee function's address into the CALL_DUMMY assembly stub. Assumes that the CALL_DUMMY looks like this: - jarl <offset24>, r31 - trap - */ + jarl <offset24>, r31 + trap + */ int v850_fix_call_dummy (dummy, sp, fun, nargs, args, type, gcc_p) @@ -835,8 +848,8 @@ v850_fix_call_dummy (dummy, sp, fun, nargs, args, type, gcc_p) offset24 &= 0x3fffff; offset24 |= 0xff800000; /* jarl <offset24>, r31 */ - store_unsigned_integer ((unsigned int *)&dummy[2], 2, offset24 & 0xffff); - store_unsigned_integer ((unsigned int *)&dummy[0], 2, offset24 >> 16); + store_unsigned_integer ((unsigned int *) &dummy[2], 2, offset24 & 0xffff); + store_unsigned_integer ((unsigned int *) &dummy[0], 2, offset24 >> 16); return 0; } |