diff options
Diffstat (limited to 'gdb/sh-tdep.c')
| -rw-r--r-- | gdb/sh-tdep.c | 225 |
1 files changed, 122 insertions, 103 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c index 49df334..72c6cbd 100644 --- a/gdb/sh-tdep.c +++ b/gdb/sh-tdep.c @@ -1,25 +1,26 @@ /* Target-dependent code for Hitachi Super-H, for GDB. Copyright 1993, 1994, 1995, 1996, 1997, 1998 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. */ /* - Contributed by Steve Chamberlain - sac@cygnus.com + Contributed by Steve Chamberlain + sac@cygnus.com */ #include "defs.h" @@ -37,7 +38,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* A set of original names, to be used when restoring back to generic registers from a specific set. */ - /* *INDENT-OFF* */ static char *sh_generic_reg_names[] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", @@ -88,25 +88,44 @@ static char *sh3e_reg_names[] = { }; /* *INDENT-ON* */ + + char **sh_register_names = sh_generic_reg_names; -struct { - char **regnames; - int mach; -} sh_processor_type_table[] = { - { sh_reg_names, bfd_mach_sh }, - { sh3_reg_names, bfd_mach_sh3 }, - { sh3e_reg_names, bfd_mach_sh3e }, - { sh3e_reg_names, bfd_mach_sh4 }, - { NULL, 0 } +struct + { + char **regnames; + int mach; + } +sh_processor_type_table[] = +{ + { + sh_reg_names, bfd_mach_sh + } + , + { + sh3_reg_names, bfd_mach_sh3 + } + , + { + sh3e_reg_names, bfd_mach_sh3e + } + , + { + sh3e_reg_names, bfd_mach_sh4 + } + , + { + NULL, 0 + } }; /* Prologue looks like - [mov.l <regs>,@-r15]... - [sts.l pr,@-r15] - [mov.l r14,@-r15] - [mov r15,r14] -*/ + [mov.l <regs>,@-r15]... + [sts.l pr,@-r15] + [mov.l r14,@-r15] + [mov r15,r14] + */ #define IS_STS(x) ((x) == 0x4f22) #define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06) @@ -203,14 +222,14 @@ sh_find_callers_reg (fi, 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. */ + that's where the previous routine appears to have done a call from. */ return generic_read_register_dummy (fi->pc, fi->frame, regnum); - else + else { - FRAME_FIND_SAVED_REGS(fi, fsr); + FRAME_FIND_SAVED_REGS (fi, fsr); if (fsr.regs[regnum] != 0) - return read_memory_integer (fsr.regs[regnum], - REGISTER_RAW_SIZE(regnum)); + return read_memory_integer (fsr.regs[regnum], + REGISTER_RAW_SIZE (regnum)); } return read_register (regnum); } @@ -234,14 +253,14 @@ sh_frame_find_saved_regs (fi, fsr) int opc; int insn; int r3_val = 0; - char * dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); + char *dummy_regs = generic_find_dummy_frame (fi->pc, fi->frame); 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 (&fsr->regs, dummy_regs, sizeof(fsr)); + the saved registers is byte-for-byte identical to the + CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */ + memcpy (&fsr->regs, dummy_regs, sizeof (fsr)); return; } @@ -368,10 +387,10 @@ sh_init_extra_frame_info (fromleaf, fi) 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->return_pc = generic_read_register_dummy (fi->pc, fi->frame, + by assuming it's always FP. */ + fi->frame = generic_read_register_dummy (fi->pc, fi->frame, + SP_REGNUM); + fi->return_pc = generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); fi->f_offset = -(CALL_DUMMY_LENGTH + 4); fi->leaf_function = 0; @@ -398,18 +417,18 @@ sh_pop_frame () if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) generic_pop_dummy_frame (); else - { - fp = FRAME_FP (frame); - get_frame_saved_regs (frame, &fsr); + { + fp = FRAME_FP (frame); + get_frame_saved_regs (frame, &fsr); - /* Copy regs from where they were saved in the frame */ - for (regnum = 0; regnum < NUM_REGS; regnum++) - if (fsr.regs[regnum]) - write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); + /* Copy regs from where they were saved in the frame */ + for (regnum = 0; regnum < NUM_REGS; regnum++) + if (fsr.regs[regnum]) + write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); - write_register (PC_REGNUM, frame->return_pc); - write_register (SP_REGNUM, fp + 4); - } + write_register (PC_REGNUM, frame->return_pc); + write_register (SP_REGNUM, fp + 4); + } flush_cached_frames (); } @@ -446,7 +465,7 @@ sh_pop_frame () 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 @@ -481,13 +500,13 @@ sh_push_arguments (nargs, args, sp, struct_return, struct_addr) /* The "struct return pointer" pseudo-argument has its own dedicated register */ if (struct_return) - write_register (STRUCT_RETURN_REGNUM, struct_addr); + 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 */ + 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 @@ -498,25 +517,25 @@ sh_push_arguments (nargs, args, sp, struct_return, struct_addr) for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) { type = VALUE_TYPE (args[argnum]); - len = TYPE_LENGTH (type); - memset(valbuf, 0, sizeof(valbuf)); + 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; - } + { /* 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]); + 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 = 1; /* such structs go entirely on stack */ + else odd_sized_struct = 0; while (len > 0) { if (argreg > ARGLAST_REGNUM || odd_sized_struct) - { /* must go on the stack */ + { /* must go on the stack */ write_memory (sp + stack_offset, val, 4); stack_offset += 4; } @@ -524,15 +543,15 @@ sh_push_arguments (nargs, args, sp, struct_return, struct_addr) That's because some *&^%$ things get passed on the stack AND in the registers! */ if (argreg <= ARGLAST_REGNUM) - { /* there's room in a register */ - regval = extract_address (val, REGISTER_RAW_SIZE(argreg)); + { /* 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); + len -= REGISTER_RAW_SIZE (argreg); + val += REGISTER_RAW_SIZE (argreg); } } return sp; @@ -558,12 +577,12 @@ sh_push_return_address (pc, sp) 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> - */ + mov.w @(2,PC), R8 + jsr @R8 + nop + trap + <destination> + */ #if 0 void @@ -629,19 +648,19 @@ sh_show_regs (args, from_tty) read_register (MACL_REGNUM)); printf_filtered ("GBR=%08x VBR=%08x", - read_register (GBR_REGNUM), - read_register (VBR_REGNUM)); + read_register (GBR_REGNUM), + read_register (VBR_REGNUM)); if (cpu == bfd_mach_sh3 || cpu == bfd_mach_sh3e) { printf_filtered (" SSR=%08x SPC=%08x", - read_register (SSR_REGNUM), - read_register (SPC_REGNUM)); + read_register (SSR_REGNUM), + read_register (SPC_REGNUM)); if (cpu == bfd_mach_sh3e) - { - printf_filtered (" FPUL=%08x FPSCR=%08x", - read_register (FPUL_REGNUM), - read_register (FPSCR_REGNUM)); - } + { + printf_filtered (" FPUL=%08x FPSCR=%08x", + read_register (FPUL_REGNUM), + read_register (FPSCR_REGNUM)); + } } printf_filtered ("\nR0-R7 %08x %08x %08x %08x %08x %08x %08x %08x\n", @@ -665,23 +684,23 @@ sh_show_regs (args, from_tty) if (cpu == bfd_mach_sh3e) { printf_filtered ("FP0-FP7 %08x %08x %08x %08x %08x %08x %08x %08x\n", - read_register (FP0_REGNUM + 0), - read_register (FP0_REGNUM + 1), - read_register (FP0_REGNUM + 2), - read_register (FP0_REGNUM + 3), - read_register (FP0_REGNUM + 4), - read_register (FP0_REGNUM + 5), - read_register (FP0_REGNUM + 6), - read_register (FP0_REGNUM + 7)); + read_register (FP0_REGNUM + 0), + read_register (FP0_REGNUM + 1), + read_register (FP0_REGNUM + 2), + read_register (FP0_REGNUM + 3), + read_register (FP0_REGNUM + 4), + read_register (FP0_REGNUM + 5), + read_register (FP0_REGNUM + 6), + read_register (FP0_REGNUM + 7)); printf_filtered ("FP8-FP15 %08x %08x %08x %08x %08x %08x %08x %08x\n", - read_register (FP0_REGNUM + 8), - read_register (FP0_REGNUM + 9), - read_register (FP0_REGNUM + 10), - read_register (FP0_REGNUM + 11), - read_register (FP0_REGNUM + 12), - read_register (FP0_REGNUM + 13), - read_register (FP0_REGNUM + 14), - read_register (FP0_REGNUM + 15)); + read_register (FP0_REGNUM + 8), + read_register (FP0_REGNUM + 9), + read_register (FP0_REGNUM + 10), + read_register (FP0_REGNUM + 11), + read_register (FP0_REGNUM + 12), + read_register (FP0_REGNUM + 13), + read_register (FP0_REGNUM + 14), + read_register (FP0_REGNUM + 15)); } } @@ -695,7 +714,7 @@ sh_extract_return_value (type, regbuf, valbuf) void *regbuf; void *valbuf; { - int len = TYPE_LENGTH(type); + int len = TYPE_LENGTH (type); if (len <= 4) memcpy (valbuf, ((char *) regbuf) + 4 - len, len); |