* defs.h: Incorporate param.h. All users changed.
* param-no-tm.h: Change users to define TM_FILE_OVERRIDE instead.
* param.h, param-no-tm.h: Removed.
* Update copyrights in all changed files.
* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
solib.c, symtab.h, tm-umax.h, valprint.c: Lint.
* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
xm-merlin.h: Avoid host include files in target descriptions.
* getpagesize.h: Removed, libiberty copes now.
1991-11-21 18:42:05 +00:00
|
|
|
|
/* Target-dependent code for the MIPS architecture, for GDB, the GNU Debugger.
|
1993-02-22 23:43:03 +00:00
|
|
|
|
Copyright 1988, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
|
1991-03-28 16:26:26 +00:00
|
|
|
|
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
|
|
|
|
|
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
|
|
|
|
|
|
|
|
|
|
This file is part of GDB.
|
|
|
|
|
|
1991-08-19 20:54:03 +00:00
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
1991-03-28 16:26:26 +00:00
|
|
|
|
it under the terms of the GNU General Public License as published by
|
1991-08-19 20:54:03 +00:00
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
|
(at your option) any later version.
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
1991-08-19 20:54:03 +00:00
|
|
|
|
This program is distributed in the hope that it will be useful,
|
1991-03-28 16:26:26 +00:00
|
|
|
|
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
|
1991-08-19 20:54:03 +00:00
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
|
#include "frame.h"
|
|
|
|
|
#include "inferior.h"
|
|
|
|
|
#include "symtab.h"
|
|
|
|
|
#include "value.h"
|
|
|
|
|
#include "gdbcmd.h"
|
1991-09-19 22:48:16 +00:00
|
|
|
|
#include "language.h"
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
#ifdef USG
|
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#include <sys/param.h>
|
|
|
|
|
#include <sys/dir.h>
|
|
|
|
|
#include <signal.h>
|
|
|
|
|
#include <sys/ioctl.h>
|
|
|
|
|
|
|
|
|
|
#include "gdbcore.h"
|
1992-03-24 07:02:52 +00:00
|
|
|
|
#include "symfile.h"
|
|
|
|
|
#include "objfiles.h"
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
#ifndef MIPSMAGIC
|
|
|
|
|
#ifdef MIPSEL
|
|
|
|
|
#define MIPSMAGIC MIPSELMAGIC
|
|
|
|
|
#else
|
|
|
|
|
#define MIPSMAGIC MIPSEBMAGIC
|
|
|
|
|
#endif
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#define VM_MIN_ADDRESS (unsigned)0x400000
|
|
|
|
|
|
|
|
|
|
#include <sys/user.h> /* After a.out.h */
|
|
|
|
|
#include <sys/file.h>
|
|
|
|
|
#include <sys/stat.h>
|
|
|
|
|
|
|
|
|
|
|
1993-02-22 23:43:03 +00:00
|
|
|
|
/* Some MIPS boards don't support floating point, so we permit the
|
|
|
|
|
user to turn it off. */
|
|
|
|
|
int mips_fpu = 1;
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
#define PROC_LOW_ADDR(proc) ((proc)->pdr.adr) /* least address */
|
|
|
|
|
#define PROC_HIGH_ADDR(proc) ((proc)->pdr.iline) /* upper address bound */
|
|
|
|
|
#define PROC_FRAME_OFFSET(proc) ((proc)->pdr.frameoffset)
|
|
|
|
|
#define PROC_FRAME_REG(proc) ((proc)->pdr.framereg)
|
|
|
|
|
#define PROC_REG_MASK(proc) ((proc)->pdr.regmask)
|
|
|
|
|
#define PROC_FREG_MASK(proc) ((proc)->pdr.fregmask)
|
|
|
|
|
#define PROC_REG_OFFSET(proc) ((proc)->pdr.regoffset)
|
|
|
|
|
#define PROC_FREG_OFFSET(proc) ((proc)->pdr.fregoffset)
|
|
|
|
|
#define PROC_PC_REG(proc) ((proc)->pdr.pcreg)
|
|
|
|
|
#define PROC_SYMBOL(proc) (*(struct symbol**)&(proc)->pdr.isym)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
#define _PROC_MAGIC_ 0x0F0F0F0F
|
1992-06-30 08:53:28 +00:00
|
|
|
|
#define PROC_DESC_IS_DUMMY(proc) ((proc)->pdr.isym == _PROC_MAGIC_)
|
|
|
|
|
#define SET_PROC_DESC_IS_DUMMY(proc) ((proc)->pdr.isym = _PROC_MAGIC_)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
struct linked_proc_info
|
|
|
|
|
{
|
|
|
|
|
struct mips_extra_func_info info;
|
|
|
|
|
struct linked_proc_info *next;
|
1992-10-15 08:36:30 +00:00
|
|
|
|
} *linked_proc_desc_table = NULL;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#define READ_FRAME_REG(fi, regno) read_next_frame_reg((fi)->next, regno)
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
static int
|
1991-03-28 16:26:26 +00:00
|
|
|
|
read_next_frame_reg(fi, regno)
|
|
|
|
|
FRAME fi;
|
|
|
|
|
int regno;
|
|
|
|
|
{
|
1993-04-16 19:29:14 +00:00
|
|
|
|
/* If it is the frame for sigtramp we have a complete sigcontext
|
|
|
|
|
immediately below the frame and we get the saved registers from there.
|
|
|
|
|
If the stack layout for sigtramp changes we might have to change these
|
|
|
|
|
constants and the companion fixup_sigtramp in mipsread.c */
|
|
|
|
|
#define SIGFRAME_BASE 0x12c /* sizeof(sigcontext) */
|
|
|
|
|
#define SIGFRAME_PC_OFF (-SIGFRAME_BASE + 2 * 4)
|
|
|
|
|
#define SIGFRAME_REGSAVE_OFF (-SIGFRAME_BASE + 3 * 4)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
for (; fi; fi = fi->next)
|
|
|
|
|
if (in_sigtramp(fi->pc, 0)) {
|
|
|
|
|
int offset;
|
|
|
|
|
if (regno == PC_REGNUM) offset = SIGFRAME_PC_OFF;
|
1993-04-16 19:29:14 +00:00
|
|
|
|
else if (regno < 32) offset = SIGFRAME_REGSAVE_OFF + regno * 4;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
else return 0;
|
|
|
|
|
return read_memory_integer(fi->frame + offset, 4);
|
|
|
|
|
}
|
|
|
|
|
else if (regno == SP_REGNUM) return fi->frame;
|
|
|
|
|
else if (fi->saved_regs->regs[regno])
|
|
|
|
|
return read_memory_integer(fi->saved_regs->regs[regno], 4);
|
|
|
|
|
return read_register(regno);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
mips_frame_saved_pc(frame)
|
|
|
|
|
FRAME frame;
|
|
|
|
|
{
|
1992-06-30 08:53:28 +00:00
|
|
|
|
mips_extra_func_info_t proc_desc = frame->proc_desc;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
int pcreg = proc_desc ? PROC_PC_REG(proc_desc) : RA_REGNUM;
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (proc_desc && PROC_DESC_IS_DUMMY(proc_desc))
|
|
|
|
|
return read_memory_integer(frame->frame - 4, 4);
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
return read_next_frame_reg(frame, pcreg);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static struct mips_extra_func_info temp_proc_desc;
|
|
|
|
|
static struct frame_saved_regs temp_saved_regs;
|
|
|
|
|
|
1993-03-13 00:32:10 +00:00
|
|
|
|
/* This fencepost looks highly suspicious to me. Removing it also
|
|
|
|
|
seems suspicious as it could affect remote debugging across serial
|
|
|
|
|
lines. At the very least, this needs a warning message.
|
|
|
|
|
rich@cygnus.com 12mar93. */
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
static CORE_ADDR
|
|
|
|
|
heuristic_proc_start(pc)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR start_pc = pc;
|
1992-03-21 01:56:01 +00:00
|
|
|
|
CORE_ADDR fence = start_pc - 200;
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
|
|
|
|
if (start_pc == 0) return 0;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (fence < VM_MIN_ADDRESS) fence = VM_MIN_ADDRESS;
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
/* search back for previous return */
|
|
|
|
|
for (start_pc -= 4; ; start_pc -= 4)
|
1993-03-13 00:32:10 +00:00
|
|
|
|
if (start_pc < fence)
|
|
|
|
|
{
|
|
|
|
|
warning("Cannot find enclosing function for pc 0x%x", pc);
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
1991-03-28 16:26:26 +00:00
|
|
|
|
else if (ABOUT_TO_RETURN(start_pc))
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
start_pc += 8; /* skip return, and its delay slot */
|
|
|
|
|
#if 0
|
|
|
|
|
/* skip nops (usually 1) 0 - is this */
|
|
|
|
|
while (start_pc < pc && read_memory_integer (start_pc, 4) == 0)
|
|
|
|
|
start_pc += 4;
|
|
|
|
|
#endif
|
|
|
|
|
return start_pc;
|
|
|
|
|
}
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
static mips_extra_func_info_t
|
1991-03-28 16:26:26 +00:00
|
|
|
|
heuristic_proc_desc(start_pc, limit_pc, next_frame)
|
|
|
|
|
CORE_ADDR start_pc, limit_pc;
|
|
|
|
|
FRAME next_frame;
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR sp = next_frame ? next_frame->frame : read_register (SP_REGNUM);
|
|
|
|
|
CORE_ADDR cur_pc;
|
|
|
|
|
int frame_size;
|
|
|
|
|
int has_frame_reg = 0;
|
|
|
|
|
int reg30; /* Value of $r30. Used by gcc for frame-pointer */
|
|
|
|
|
unsigned long reg_mask = 0;
|
|
|
|
|
|
|
|
|
|
if (start_pc == 0) return NULL;
|
|
|
|
|
bzero(&temp_proc_desc, sizeof(temp_proc_desc));
|
|
|
|
|
bzero(&temp_saved_regs, sizeof(struct frame_saved_regs));
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
PROC_LOW_ADDR(&temp_proc_desc) = start_pc;
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (start_pc + 200 < limit_pc) limit_pc = start_pc + 200;
|
|
|
|
|
restart:
|
|
|
|
|
frame_size = 0;
|
|
|
|
|
for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += 4) {
|
|
|
|
|
unsigned long word;
|
|
|
|
|
int status;
|
|
|
|
|
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
status = read_memory_nobpt (cur_pc, (char *)&word, 4);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (status) memory_error (status, cur_pc);
|
1992-03-21 01:56:01 +00:00
|
|
|
|
SWAP_TARGET_AND_HOST (&word, sizeof (word));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if ((word & 0xFFFF0000) == 0x27bd0000) /* addiu $sp,$sp,-i */
|
|
|
|
|
frame_size += (-word) & 0xFFFF;
|
|
|
|
|
else if ((word & 0xFFFF0000) == 0x23bd0000) /* addu $sp,$sp,-i */
|
|
|
|
|
frame_size += (-word) & 0xFFFF;
|
|
|
|
|
else if ((word & 0xFFE00000) == 0xafa00000) { /* sw reg,offset($sp) */
|
|
|
|
|
int reg = (word & 0x001F0000) >> 16;
|
|
|
|
|
reg_mask |= 1 << reg;
|
|
|
|
|
temp_saved_regs.regs[reg] = sp + (short)word;
|
|
|
|
|
}
|
|
|
|
|
else if ((word & 0xFFFF0000) == 0x27be0000) { /* addiu $30,$sp,size */
|
|
|
|
|
if ((unsigned short)word != frame_size)
|
|
|
|
|
reg30 = sp + (unsigned short)word;
|
|
|
|
|
else if (!has_frame_reg) {
|
|
|
|
|
int alloca_adjust;
|
|
|
|
|
has_frame_reg = 1;
|
|
|
|
|
reg30 = read_next_frame_reg(next_frame, 30);
|
|
|
|
|
alloca_adjust = reg30 - (sp + (unsigned short)word);
|
|
|
|
|
if (alloca_adjust > 0) {
|
|
|
|
|
/* FP > SP + frame_size. This may be because
|
|
|
|
|
/* of an alloca or somethings similar.
|
|
|
|
|
* Fix sp to "pre-alloca" value, and try again.
|
|
|
|
|
*/
|
|
|
|
|
sp += alloca_adjust;
|
|
|
|
|
goto restart;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if ((word & 0xFFE00000) == 0xafc00000) { /* sw reg,offset($30) */
|
|
|
|
|
int reg = (word & 0x001F0000) >> 16;
|
|
|
|
|
reg_mask |= 1 << reg;
|
|
|
|
|
temp_saved_regs.regs[reg] = reg30 + (short)word;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (has_frame_reg) {
|
|
|
|
|
PROC_FRAME_REG(&temp_proc_desc) = 30;
|
|
|
|
|
PROC_FRAME_OFFSET(&temp_proc_desc) = 0;
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
PROC_FRAME_REG(&temp_proc_desc) = SP_REGNUM;
|
|
|
|
|
PROC_FRAME_OFFSET(&temp_proc_desc) = frame_size;
|
|
|
|
|
}
|
|
|
|
|
PROC_REG_MASK(&temp_proc_desc) = reg_mask;
|
|
|
|
|
PROC_PC_REG(&temp_proc_desc) = RA_REGNUM;
|
|
|
|
|
return &temp_proc_desc;
|
|
|
|
|
}
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
static mips_extra_func_info_t
|
1991-03-28 16:26:26 +00:00
|
|
|
|
find_proc_desc(pc, next_frame)
|
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
FRAME next_frame;
|
|
|
|
|
{
|
|
|
|
|
mips_extra_func_info_t proc_desc;
|
1992-06-30 08:53:28 +00:00
|
|
|
|
struct block *b = block_for_pc(pc);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
struct symbol *sym =
|
1992-10-15 08:36:30 +00:00
|
|
|
|
b ? lookup_symbol(MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, 0, NULL) : NULL;
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
|
|
|
|
if (sym)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
{
|
|
|
|
|
/* IF this is the topmost frame AND
|
|
|
|
|
* (this proc does not have debugging information OR
|
|
|
|
|
* the PC is in the procedure prologue)
|
1992-03-29 23:26:47 +00:00
|
|
|
|
* THEN create a "heuristic" proc_desc (by analyzing
|
1991-03-28 16:26:26 +00:00
|
|
|
|
* the actual code) to replace the "official" proc_desc.
|
|
|
|
|
*/
|
1992-06-30 08:53:28 +00:00
|
|
|
|
proc_desc = (mips_extra_func_info_t)SYMBOL_VALUE(sym);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (next_frame == NULL) {
|
|
|
|
|
struct symtab_and_line val;
|
|
|
|
|
struct symbol *proc_symbol =
|
|
|
|
|
PROC_DESC_IS_DUMMY(proc_desc) ? 0 : PROC_SYMBOL(proc_desc);
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (proc_symbol) {
|
|
|
|
|
val = find_pc_line (BLOCK_START
|
|
|
|
|
(SYMBOL_BLOCK_VALUE(proc_symbol)),
|
|
|
|
|
0);
|
|
|
|
|
val.pc = val.end ? val.end : pc;
|
|
|
|
|
}
|
|
|
|
|
if (!proc_symbol || pc < val.pc) {
|
|
|
|
|
mips_extra_func_info_t found_heuristic =
|
|
|
|
|
heuristic_proc_desc(PROC_LOW_ADDR(proc_desc),
|
|
|
|
|
pc, next_frame);
|
|
|
|
|
if (found_heuristic) proc_desc = found_heuristic;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
1992-06-30 08:53:28 +00:00
|
|
|
|
/* Is linked_proc_desc_table really necessary? It only seems to be used
|
|
|
|
|
by procedure call dummys. However, the procedures being called ought
|
|
|
|
|
to have their own proc_descs, and even if they don't,
|
|
|
|
|
heuristic_proc_desc knows how to create them! */
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
register struct linked_proc_info *link;
|
|
|
|
|
for (link = linked_proc_desc_table; link; link = link->next)
|
|
|
|
|
if (PROC_LOW_ADDR(&link->info) <= pc
|
|
|
|
|
&& PROC_HIGH_ADDR(&link->info) > pc)
|
|
|
|
|
return &link->info;
|
|
|
|
|
proc_desc =
|
|
|
|
|
heuristic_proc_desc(heuristic_proc_start(pc), pc, next_frame);
|
|
|
|
|
}
|
|
|
|
|
return proc_desc;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
mips_extra_func_info_t cached_proc_desc;
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
FRAME_ADDR
|
|
|
|
|
mips_frame_chain(frame)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
FRAME frame;
|
|
|
|
|
{
|
|
|
|
|
mips_extra_func_info_t proc_desc;
|
|
|
|
|
CORE_ADDR saved_pc = FRAME_SAVED_PC(frame);
|
1992-03-29 23:26:47 +00:00
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
if (saved_pc == 0 || inside_entry_file (saved_pc))
|
|
|
|
|
return 0;
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
proc_desc = find_proc_desc(saved_pc, frame);
|
1992-06-30 08:53:28 +00:00
|
|
|
|
if (!proc_desc)
|
|
|
|
|
return 0;
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
cached_proc_desc = proc_desc;
|
|
|
|
|
return read_next_frame_reg(frame, PROC_FRAME_REG(proc_desc))
|
1992-06-30 08:53:28 +00:00
|
|
|
|
+ PROC_FRAME_OFFSET(proc_desc);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
init_extra_frame_info(fci)
|
|
|
|
|
struct frame_info *fci;
|
|
|
|
|
{
|
|
|
|
|
extern struct obstack frame_cache_obstack;
|
|
|
|
|
/* Use proc_desc calculated in frame_chain */
|
|
|
|
|
mips_extra_func_info_t proc_desc = fci->next ? cached_proc_desc :
|
|
|
|
|
find_proc_desc(fci->pc, fci->next);
|
1992-06-30 08:53:28 +00:00
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
fci->saved_regs = (struct frame_saved_regs*)
|
|
|
|
|
obstack_alloc (&frame_cache_obstack, sizeof(struct frame_saved_regs));
|
|
|
|
|
bzero(fci->saved_regs, sizeof(struct frame_saved_regs));
|
|
|
|
|
fci->proc_desc =
|
1992-06-30 08:53:28 +00:00
|
|
|
|
proc_desc == &temp_proc_desc ? 0 : proc_desc;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (proc_desc)
|
|
|
|
|
{
|
|
|
|
|
int ireg;
|
|
|
|
|
CORE_ADDR reg_position;
|
|
|
|
|
unsigned long mask;
|
|
|
|
|
/* r0 bit means kernel trap */
|
|
|
|
|
int kernel_trap = PROC_REG_MASK(proc_desc) & 1;
|
|
|
|
|
|
1993-02-22 23:43:03 +00:00
|
|
|
|
/* Fixup frame-pointer - only needed for top frame */
|
|
|
|
|
/* This may not be quite right, if proc has a real frame register */
|
|
|
|
|
if (fci->pc == PROC_LOW_ADDR(proc_desc))
|
|
|
|
|
fci->frame = read_register (SP_REGNUM);
|
|
|
|
|
else
|
|
|
|
|
fci->frame = READ_FRAME_REG(fci, PROC_FRAME_REG(proc_desc))
|
|
|
|
|
+ PROC_FRAME_OFFSET(proc_desc);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
if (proc_desc == &temp_proc_desc)
|
|
|
|
|
*fci->saved_regs = temp_saved_regs;
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* find which general-purpose registers were saved */
|
|
|
|
|
reg_position = fci->frame + PROC_REG_OFFSET(proc_desc);
|
|
|
|
|
mask = kernel_trap ? 0xFFFFFFFF : PROC_REG_MASK(proc_desc);
|
|
|
|
|
for (ireg= 31; mask; --ireg, mask <<= 1)
|
|
|
|
|
if (mask & 0x80000000)
|
|
|
|
|
{
|
|
|
|
|
fci->saved_regs->regs[ireg] = reg_position;
|
|
|
|
|
reg_position -= 4;
|
|
|
|
|
}
|
|
|
|
|
/* find which floating-point registers were saved */
|
|
|
|
|
reg_position = fci->frame + PROC_FREG_OFFSET(proc_desc);
|
|
|
|
|
/* The freg_offset points to where the first *double* register is saved.
|
|
|
|
|
* So skip to the high-order word. */
|
|
|
|
|
reg_position += 4;
|
|
|
|
|
mask = kernel_trap ? 0xFFFFFFFF : PROC_FREG_MASK(proc_desc);
|
|
|
|
|
for (ireg = 31; mask; --ireg, mask <<= 1)
|
|
|
|
|
if (mask & 0x80000000)
|
|
|
|
|
{
|
1992-03-03 23:26:26 +00:00
|
|
|
|
fci->saved_regs->regs[FP0_REGNUM+ireg] = reg_position;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
reg_position -= 4;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* hack: if argument regs are saved, guess these contain args */
|
|
|
|
|
if ((PROC_REG_MASK(proc_desc) & 0xF0) == 0) fci->num_args = -1;
|
|
|
|
|
else if ((PROC_REG_MASK(proc_desc) & 0x80) == 0) fci->num_args = 4;
|
|
|
|
|
else if ((PROC_REG_MASK(proc_desc) & 0x40) == 0) fci->num_args = 3;
|
|
|
|
|
else if ((PROC_REG_MASK(proc_desc) & 0x20) == 0) fci->num_args = 2;
|
|
|
|
|
else if ((PROC_REG_MASK(proc_desc) & 0x10) == 0) fci->num_args = 1;
|
|
|
|
|
|
|
|
|
|
fci->saved_regs->regs[PC_REGNUM] = fci->saved_regs->regs[RA_REGNUM];
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
/* MIPS stack frames are almost impenetrable. When execution stops,
|
|
|
|
|
we basically have to look at symbol information for the function
|
|
|
|
|
that we stopped in, which tells us *which* register (if any) is
|
|
|
|
|
the base of the frame pointer, and what offset from that register
|
|
|
|
|
the frame itself is at.
|
|
|
|
|
|
|
|
|
|
This presents a problem when trying to examine a stack in memory
|
|
|
|
|
(that isn't executing at the moment), using the "frame" command. We
|
|
|
|
|
don't have a PC, nor do we have any registers except SP.
|
|
|
|
|
|
|
|
|
|
This routine takes two arguments, SP and PC, and tries to make the
|
|
|
|
|
cached frames look as if these two arguments defined a frame on the
|
|
|
|
|
cache. This allows the rest of info frame to extract the important
|
|
|
|
|
arguments without difficulty. */
|
|
|
|
|
|
|
|
|
|
FRAME
|
1993-02-22 23:43:03 +00:00
|
|
|
|
setup_arbitrary_frame (argc, argv)
|
|
|
|
|
int argc;
|
|
|
|
|
FRAME_ADDR *argv;
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
{
|
1993-02-22 23:43:03 +00:00
|
|
|
|
if (argc != 2)
|
|
|
|
|
error ("MIPS frame specifications require two arguments: sp and pc");
|
|
|
|
|
|
|
|
|
|
return create_new_frame (argv[0], argv[1]);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
}
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
CORE_ADDR
|
|
|
|
|
mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
int nargs;
|
|
|
|
|
value *args;
|
|
|
|
|
CORE_ADDR sp;
|
|
|
|
|
int struct_return;
|
|
|
|
|
CORE_ADDR struct_addr;
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR buf;
|
|
|
|
|
register i;
|
|
|
|
|
int accumulate_size = struct_return ? 4 : 0;
|
|
|
|
|
struct mips_arg { char *contents; int len; int offset; };
|
|
|
|
|
struct mips_arg *mips_args =
|
|
|
|
|
(struct mips_arg*)alloca(nargs * sizeof(struct mips_arg));
|
|
|
|
|
register struct mips_arg *m_arg;
|
|
|
|
|
for (i = 0, m_arg = mips_args; i < nargs; i++, m_arg++) {
|
|
|
|
|
extern value value_arg_coerce();
|
|
|
|
|
value arg = value_arg_coerce (args[i]);
|
|
|
|
|
m_arg->len = TYPE_LENGTH (VALUE_TYPE (arg));
|
|
|
|
|
/* This entire mips-specific routine is because doubles must be aligned
|
|
|
|
|
* on 8-byte boundaries. It still isn't quite right, because MIPS decided
|
|
|
|
|
* to align 'struct {int a, b}' on 4-byte boundaries (even though this
|
|
|
|
|
* breaks their varargs implementation...). A correct solution
|
|
|
|
|
* requires an simulation of gcc's 'alignof' (and use of 'alignof'
|
|
|
|
|
* in stdarg.h/varargs.h).
|
|
|
|
|
*/
|
|
|
|
|
if (m_arg->len > 4) accumulate_size = (accumulate_size + 7) & -8;
|
|
|
|
|
m_arg->offset = accumulate_size;
|
|
|
|
|
accumulate_size = (accumulate_size + m_arg->len + 3) & -4;
|
|
|
|
|
m_arg->contents = VALUE_CONTENTS(arg);
|
|
|
|
|
}
|
|
|
|
|
accumulate_size = (accumulate_size + 7) & (-8);
|
|
|
|
|
if (accumulate_size < 16) accumulate_size = 16;
|
|
|
|
|
sp -= accumulate_size;
|
|
|
|
|
for (i = nargs; m_arg--, --i >= 0; )
|
|
|
|
|
write_memory(sp + m_arg->offset, m_arg->contents, m_arg->len);
|
|
|
|
|
if (struct_return) {
|
|
|
|
|
buf = struct_addr;
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory(sp, (char *)&buf, sizeof(CORE_ADDR));
|
|
|
|
|
}
|
1991-03-28 16:26:26 +00:00
|
|
|
|
return sp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* MASK(i,j) == (1<<i) + (1<<(i+1)) + ... + (1<<j)). Assume i<=j<31. */
|
|
|
|
|
#define MASK(i,j) ((1 << (j)+1)-1 ^ (1 << (i))-1)
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
mips_push_dummy_frame()
|
|
|
|
|
{
|
|
|
|
|
int ireg;
|
|
|
|
|
struct linked_proc_info *link = (struct linked_proc_info*)
|
|
|
|
|
xmalloc(sizeof(struct linked_proc_info));
|
|
|
|
|
mips_extra_func_info_t proc_desc = &link->info;
|
|
|
|
|
CORE_ADDR sp = read_register (SP_REGNUM);
|
|
|
|
|
CORE_ADDR save_address;
|
|
|
|
|
REGISTER_TYPE buffer;
|
|
|
|
|
link->next = linked_proc_desc_table;
|
|
|
|
|
linked_proc_desc_table = link;
|
|
|
|
|
#define PUSH_FP_REGNUM 16 /* must be a register preserved across calls */
|
|
|
|
|
#define GEN_REG_SAVE_MASK MASK(1,16)|MASK(24,28)|(1<<31)
|
|
|
|
|
#define GEN_REG_SAVE_COUNT 22
|
|
|
|
|
#define FLOAT_REG_SAVE_MASK MASK(0,19)
|
|
|
|
|
#define FLOAT_REG_SAVE_COUNT 20
|
|
|
|
|
#define SPECIAL_REG_SAVE_COUNT 4
|
|
|
|
|
/*
|
|
|
|
|
* The registers we must save are all those not preserved across
|
|
|
|
|
* procedure calls. Dest_Reg (see tm-mips.h) must also be saved.
|
|
|
|
|
* In addition, we must save the PC, and PUSH_FP_REGNUM.
|
|
|
|
|
* (Ideally, we should also save MDLO/-HI and FP Control/Status reg.)
|
|
|
|
|
*
|
|
|
|
|
* Dummy frame layout:
|
|
|
|
|
* (high memory)
|
|
|
|
|
* Saved PC
|
|
|
|
|
* Saved MMHI, MMLO, FPC_CSR
|
|
|
|
|
* Saved R31
|
|
|
|
|
* Saved R28
|
|
|
|
|
* ...
|
|
|
|
|
* Saved R1
|
|
|
|
|
* Saved D18 (i.e. F19, F18)
|
|
|
|
|
* ...
|
|
|
|
|
* Saved D0 (i.e. F1, F0)
|
1993-02-22 23:43:03 +00:00
|
|
|
|
* CALL_DUMMY (subroutine stub; see tm-mips.h)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
* Parameter build area (not yet implemented)
|
|
|
|
|
* (low memory)
|
|
|
|
|
*/
|
|
|
|
|
PROC_REG_MASK(proc_desc) = GEN_REG_SAVE_MASK;
|
1993-02-22 23:43:03 +00:00
|
|
|
|
PROC_FREG_MASK(proc_desc) = mips_fpu ? FLOAT_REG_SAVE_MASK : 0;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
PROC_REG_OFFSET(proc_desc) = /* offset of (Saved R31) from FP */
|
|
|
|
|
-sizeof(long) - 4 * SPECIAL_REG_SAVE_COUNT;
|
|
|
|
|
PROC_FREG_OFFSET(proc_desc) = /* offset of (Saved D18) from FP */
|
|
|
|
|
-sizeof(double) - 4 * (SPECIAL_REG_SAVE_COUNT + GEN_REG_SAVE_COUNT);
|
|
|
|
|
/* save general registers */
|
|
|
|
|
save_address = sp + PROC_REG_OFFSET(proc_desc);
|
|
|
|
|
for (ireg = 32; --ireg >= 0; )
|
|
|
|
|
if (PROC_REG_MASK(proc_desc) & (1 << ireg))
|
|
|
|
|
{
|
|
|
|
|
buffer = read_register (ireg);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (save_address, (char *)&buffer, sizeof(REGISTER_TYPE));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
save_address -= 4;
|
|
|
|
|
}
|
1993-03-28 19:28:26 +00:00
|
|
|
|
/* save floating-points registers starting with high order word */
|
|
|
|
|
save_address = sp + PROC_FREG_OFFSET(proc_desc) + 4;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
for (ireg = 32; --ireg >= 0; )
|
|
|
|
|
if (PROC_FREG_MASK(proc_desc) & (1 << ireg))
|
|
|
|
|
{
|
* defs.h: Incorporate param.h. All users changed.
* param-no-tm.h: Change users to define TM_FILE_OVERRIDE instead.
* param.h, param-no-tm.h: Removed.
* Update copyrights in all changed files.
* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
solib.c, symtab.h, tm-umax.h, valprint.c: Lint.
* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
xm-merlin.h: Avoid host include files in target descriptions.
* getpagesize.h: Removed, libiberty copes now.
1991-11-21 18:42:05 +00:00
|
|
|
|
buffer = read_register (ireg + FP0_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (save_address, (char *)&buffer, 4);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
save_address -= 4;
|
|
|
|
|
}
|
|
|
|
|
write_register (PUSH_FP_REGNUM, sp);
|
|
|
|
|
PROC_FRAME_REG(proc_desc) = PUSH_FP_REGNUM;
|
|
|
|
|
PROC_FRAME_OFFSET(proc_desc) = 0;
|
|
|
|
|
buffer = read_register (PC_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (sp - 4, (char *)&buffer, sizeof(REGISTER_TYPE));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
buffer = read_register (HI_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (sp - 8, (char *)&buffer, sizeof(REGISTER_TYPE));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
buffer = read_register (LO_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (sp - 12, (char *)&buffer, sizeof(REGISTER_TYPE));
|
1993-02-22 23:43:03 +00:00
|
|
|
|
buffer = read_register (mips_fpu ? FCRCS_REGNUM : ZERO_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
write_memory (sp - 16, (char *)&buffer, sizeof(REGISTER_TYPE));
|
1993-02-22 23:43:03 +00:00
|
|
|
|
sp -= 4 * (GEN_REG_SAVE_COUNT
|
|
|
|
|
+ (mips_fpu ? FLOAT_REG_SAVE_COUNT : 0)
|
|
|
|
|
+ SPECIAL_REG_SAVE_COUNT);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
write_register (SP_REGNUM, sp);
|
|
|
|
|
PROC_LOW_ADDR(proc_desc) = sp - CALL_DUMMY_SIZE + CALL_DUMMY_START_OFFSET;
|
|
|
|
|
PROC_HIGH_ADDR(proc_desc) = sp;
|
|
|
|
|
SET_PROC_DESC_IS_DUMMY(proc_desc);
|
|
|
|
|
PROC_PC_REG(proc_desc) = RA_REGNUM;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
mips_pop_frame()
|
1992-10-15 08:36:30 +00:00
|
|
|
|
{
|
|
|
|
|
register int regnum;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
FRAME frame = get_current_frame ();
|
|
|
|
|
CORE_ADDR new_sp = frame->frame;
|
1992-10-15 08:36:30 +00:00
|
|
|
|
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
mips_extra_func_info_t proc_desc = frame->proc_desc;
|
1992-10-15 08:36:30 +00:00
|
|
|
|
|
|
|
|
|
write_register (PC_REGNUM, FRAME_SAVED_PC(frame));
|
|
|
|
|
if (proc_desc)
|
|
|
|
|
{
|
|
|
|
|
for (regnum = 32; --regnum >= 0; )
|
|
|
|
|
if (PROC_REG_MASK(proc_desc) & (1 << regnum))
|
|
|
|
|
write_register (regnum,
|
|
|
|
|
read_memory_integer (frame->saved_regs->regs[regnum],
|
|
|
|
|
4));
|
|
|
|
|
for (regnum = 32; --regnum >= 0; )
|
|
|
|
|
if (PROC_FREG_MASK(proc_desc) & (1 << regnum))
|
|
|
|
|
write_register (regnum + FP0_REGNUM,
|
|
|
|
|
read_memory_integer (frame->saved_regs->regs[regnum + FP0_REGNUM], 4));
|
|
|
|
|
}
|
|
|
|
|
write_register (SP_REGNUM, new_sp);
|
|
|
|
|
flush_cached_frames ();
|
|
|
|
|
/* We let mips_init_extra_frame_info figure out the frame pointer */
|
|
|
|
|
set_current_frame (create_new_frame (0, read_pc ()));
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (PROC_DESC_IS_DUMMY(proc_desc))
|
|
|
|
|
{
|
1992-10-15 08:36:30 +00:00
|
|
|
|
struct linked_proc_info *pi_ptr, *prev_ptr;
|
|
|
|
|
|
|
|
|
|
for (pi_ptr = linked_proc_desc_table, prev_ptr = NULL;
|
|
|
|
|
pi_ptr != NULL;
|
|
|
|
|
prev_ptr = pi_ptr, pi_ptr = pi_ptr->next)
|
|
|
|
|
{
|
|
|
|
|
if (&pi_ptr->info == proc_desc)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (pi_ptr == NULL)
|
|
|
|
|
error ("Can't locate dummy extra frame info\n");
|
|
|
|
|
|
|
|
|
|
if (prev_ptr != NULL)
|
|
|
|
|
prev_ptr->next = pi_ptr->next;
|
|
|
|
|
else
|
|
|
|
|
linked_proc_desc_table = pi_ptr->next;
|
|
|
|
|
|
|
|
|
|
free (pi_ptr);
|
|
|
|
|
|
1991-03-28 16:26:26 +00:00
|
|
|
|
write_register (HI_REGNUM, read_memory_integer(new_sp - 8, 4));
|
|
|
|
|
write_register (LO_REGNUM, read_memory_integer(new_sp - 12, 4));
|
1993-02-22 23:43:03 +00:00
|
|
|
|
if (mips_fpu)
|
|
|
|
|
write_register (FCRCS_REGNUM, read_memory_integer(new_sp - 16, 4));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
static void
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
mips_print_register (regnum, all)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
int regnum, all;
|
|
|
|
|
{
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 07:59:37 +00:00
|
|
|
|
unsigned char raw_buffer[MAX_REGISTER_RAW_SIZE * 2]; /* *2 for doubles */
|
1991-03-28 16:26:26 +00:00
|
|
|
|
REGISTER_TYPE val;
|
|
|
|
|
|
1992-03-21 01:56:01 +00:00
|
|
|
|
/* Get the data in raw format. */
|
|
|
|
|
if (read_relative_register_raw_bytes (regnum, raw_buffer))
|
|
|
|
|
{
|
|
|
|
|
printf_filtered ("%s: [Invalid]", reg_names[regnum]);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
1992-03-03 23:26:26 +00:00
|
|
|
|
/* If an even floating pointer register, also print as double. */
|
|
|
|
|
if (regnum >= FP0_REGNUM && regnum < FP0_REGNUM+32
|
|
|
|
|
&& !((regnum-FP0_REGNUM) & 1)) {
|
1991-03-28 16:26:26 +00:00
|
|
|
|
read_relative_register_raw_bytes (regnum+1, raw_buffer+4);
|
1992-03-03 23:26:26 +00:00
|
|
|
|
printf_filtered ("(d%d: ", regnum-FP0_REGNUM);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
val_print (builtin_type_double, raw_buffer, 0,
|
|
|
|
|
stdout, 0, 1, 0, Val_pretty_default);
|
1992-03-03 23:26:26 +00:00
|
|
|
|
printf_filtered ("); ");
|
1991-03-28 16:26:26 +00:00
|
|
|
|
}
|
|
|
|
|
fputs_filtered (reg_names[regnum], stdout);
|
|
|
|
|
#ifndef NUMERIC_REG_NAMES
|
|
|
|
|
if (regnum < 32)
|
|
|
|
|
printf_filtered ("(r%d): ", regnum);
|
|
|
|
|
else
|
|
|
|
|
#endif
|
|
|
|
|
printf_filtered (": ");
|
|
|
|
|
|
|
|
|
|
/* If virtual format is floating, print it that way. */
|
|
|
|
|
if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT
|
|
|
|
|
&& ! INVALID_FLOAT (raw_buffer, REGISTER_VIRTUAL_SIZE(regnum))) {
|
|
|
|
|
val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0,
|
|
|
|
|
stdout, 0, 1, 0, Val_pretty_default);
|
|
|
|
|
}
|
|
|
|
|
/* Else print as integer in hex. */
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
long val;
|
|
|
|
|
|
|
|
|
|
bcopy (raw_buffer, &val, sizeof (long));
|
1992-03-21 01:56:01 +00:00
|
|
|
|
SWAP_TARGET_AND_HOST ((char *)&val, sizeof (long));
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (val == 0)
|
|
|
|
|
printf_filtered ("0");
|
|
|
|
|
else if (all)
|
1991-09-19 07:39:54 +00:00
|
|
|
|
printf_filtered (local_hex_format(), val);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
else
|
1991-09-19 07:39:54 +00:00
|
|
|
|
printf_filtered ("%s=%d", local_hex_string(val), val);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
1991-09-19 07:39:54 +00:00
|
|
|
|
/* Replacement for generic do_registers_info. */
|
1992-06-30 08:53:28 +00:00
|
|
|
|
void
|
1991-08-19 20:54:03 +00:00
|
|
|
|
mips_do_registers_info (regnum, fpregs)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
int regnum;
|
1991-08-19 20:54:03 +00:00
|
|
|
|
int fpregs;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
{
|
|
|
|
|
if (regnum != -1) {
|
|
|
|
|
mips_print_register (regnum, 0);
|
|
|
|
|
printf_filtered ("\n");
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
for (regnum = 0; regnum < NUM_REGS; ) {
|
1991-09-19 07:39:54 +00:00
|
|
|
|
if ((!fpregs) && regnum >= FP0_REGNUM && regnum <= FCRIR_REGNUM) {
|
|
|
|
|
regnum++;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
1991-03-28 16:26:26 +00:00
|
|
|
|
mips_print_register (regnum, 1);
|
|
|
|
|
regnum++;
|
|
|
|
|
if ((regnum & 3) == 0 || regnum == NUM_REGS)
|
|
|
|
|
printf_filtered (";\n");
|
|
|
|
|
else
|
|
|
|
|
printf_filtered ("; ");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
/* Return number of args passed to a frame. described by FIP.
|
|
|
|
|
Can return -1, meaning no way to tell. */
|
|
|
|
|
|
1992-06-30 08:53:28 +00:00
|
|
|
|
int
|
1991-03-28 16:26:26 +00:00
|
|
|
|
mips_frame_num_args(fip)
|
|
|
|
|
FRAME fip;
|
|
|
|
|
{
|
|
|
|
|
#if 0
|
|
|
|
|
struct chain_info_t *p;
|
|
|
|
|
|
|
|
|
|
p = mips_find_cached_frame(FRAME_FP(fip));
|
|
|
|
|
if (p->valid)
|
|
|
|
|
return p->the_info.numargs;
|
|
|
|
|
#endif
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Bad floats: Returns 0 if P points to a valid IEEE floating point number,
|
|
|
|
|
1 if P points to a denormalized number or a NaN. LEN says whether this is
|
|
|
|
|
a single-precision or double-precision float */
|
|
|
|
|
#define SINGLE_EXP_BITS 8
|
|
|
|
|
#define DOUBLE_EXP_BITS 11
|
|
|
|
|
int
|
|
|
|
|
isa_NAN(p, len)
|
|
|
|
|
int *p, len;
|
|
|
|
|
{
|
|
|
|
|
int exponent;
|
|
|
|
|
if (len == 4)
|
|
|
|
|
{
|
|
|
|
|
exponent = *p;
|
|
|
|
|
exponent = exponent << 1 >> (32 - SINGLE_EXP_BITS - 1);
|
|
|
|
|
return ((exponent == -1) || (! exponent && *p));
|
|
|
|
|
}
|
|
|
|
|
else if (len == 8)
|
|
|
|
|
{
|
1993-02-22 23:43:03 +00:00
|
|
|
|
#if TARGET_BYTE_ORDER == BIG_ENDIAN
|
|
|
|
|
exponent = *p;
|
|
|
|
|
#else
|
1991-03-28 16:26:26 +00:00
|
|
|
|
exponent = *(p+1);
|
1993-02-22 23:43:03 +00:00
|
|
|
|
#endif
|
1991-03-28 16:26:26 +00:00
|
|
|
|
exponent = exponent << 1 >> (32 - DOUBLE_EXP_BITS - 1);
|
|
|
|
|
return ((exponent == -1) || (! exponent && *p * *(p+1)));
|
|
|
|
|
}
|
|
|
|
|
else return 1;
|
|
|
|
|
}
|
1992-03-05 20:20:27 +00:00
|
|
|
|
|
1993-03-28 19:28:26 +00:00
|
|
|
|
/* To skip prologues, I use this predicate. Returns either PC
|
|
|
|
|
itself if the code at PC does not look like a function prologue;
|
|
|
|
|
otherwise returns an address that (if we're lucky) follows
|
|
|
|
|
the prologue. */
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
1992-03-29 23:26:47 +00:00
|
|
|
|
CORE_ADDR
|
|
|
|
|
mips_skip_prologue(pc)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
{
|
|
|
|
|
struct symbol *f;
|
|
|
|
|
struct block *b;
|
|
|
|
|
unsigned long inst;
|
1992-03-03 23:26:26 +00:00
|
|
|
|
int offset;
|
1993-03-28 19:28:26 +00:00
|
|
|
|
int seen_sp_adjust = 0;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
1993-04-16 19:29:14 +00:00
|
|
|
|
/* Skip the typical prologue instructions. These are the stack adjustment
|
|
|
|
|
instruction and the instructions that save registers on the stack
|
|
|
|
|
or in the gcc frame. */
|
1992-03-03 23:26:26 +00:00
|
|
|
|
for (offset = 0; offset < 100; offset += 4) {
|
|
|
|
|
inst = read_memory_integer(pc + offset, 4);
|
1993-04-16 19:29:14 +00:00
|
|
|
|
if ((inst & 0xffff0000) == 0x27bd0000) /* addiu $sp,$sp,offset */
|
1993-03-28 19:28:26 +00:00
|
|
|
|
seen_sp_adjust = 1;
|
1993-04-16 19:29:14 +00:00
|
|
|
|
else if ((inst & 0xFFE00000) == 0xAFA00000 && (inst & 0x001F0000))
|
|
|
|
|
continue; /* sw reg,n($sp) */
|
|
|
|
|
/* reg != $zero */
|
|
|
|
|
else if ((inst & 0xFFE00000) == 0xE7A00000) /* swc1 freg,n($sp) */
|
|
|
|
|
continue;
|
|
|
|
|
else if ((inst & 0xF3E00000) == 0xA3C00000 && (inst & 0x001F0000))
|
|
|
|
|
/* sx reg,n($s8) */
|
|
|
|
|
continue; /* reg != $zero */
|
|
|
|
|
else if (inst == 0x03A0F021) /* move $s8,$sp */
|
1993-03-28 19:28:26 +00:00
|
|
|
|
continue;
|
|
|
|
|
else
|
1993-04-16 19:29:14 +00:00
|
|
|
|
break;
|
1992-03-03 23:26:26 +00:00
|
|
|
|
}
|
1993-04-16 19:29:14 +00:00
|
|
|
|
return pc + offset;
|
|
|
|
|
|
|
|
|
|
/* FIXME schauer. The following code seems no longer necessary if we
|
|
|
|
|
always skip the typical prologue instructions. */
|
|
|
|
|
|
|
|
|
|
#if 0
|
1993-03-28 19:28:26 +00:00
|
|
|
|
if (seen_sp_adjust)
|
|
|
|
|
return pc + offset;
|
1991-03-28 16:26:26 +00:00
|
|
|
|
|
|
|
|
|
/* Well, it looks like a frameless. Let's make sure.
|
|
|
|
|
Note that we are not called on the current PC,
|
|
|
|
|
but on the function`s start PC, and I have definitely
|
|
|
|
|
seen optimized code that adjusts the SP quite later */
|
|
|
|
|
b = block_for_pc(pc);
|
|
|
|
|
if (!b) return pc;
|
|
|
|
|
|
1992-10-15 08:36:30 +00:00
|
|
|
|
f = lookup_symbol(MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, 0, NULL);
|
1991-03-28 16:26:26 +00:00
|
|
|
|
if (!f) return pc;
|
|
|
|
|
/* Ideally, I would like to use the adjusted info
|
|
|
|
|
from mips_frame_info(), but for all practical
|
|
|
|
|
purposes it will not matter (and it would require
|
|
|
|
|
a different definition of SKIP_PROLOGUE())
|
|
|
|
|
|
|
|
|
|
Actually, it would not hurt to skip the storing
|
|
|
|
|
of arguments on the stack as well. */
|
1992-06-30 08:53:28 +00:00
|
|
|
|
if (((mips_extra_func_info_t)SYMBOL_VALUE(f))->pdr.frameoffset)
|
1991-03-28 16:26:26 +00:00
|
|
|
|
return pc + 4;
|
|
|
|
|
|
|
|
|
|
return pc;
|
1993-04-16 19:29:14 +00:00
|
|
|
|
#endif
|
1991-03-28 16:26:26 +00:00
|
|
|
|
}
|
1993-02-22 23:43:03 +00:00
|
|
|
|
|
|
|
|
|
/* Let the user turn off floating point. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
_initialize_mips_tdep ()
|
|
|
|
|
{
|
|
|
|
|
add_show_from_set
|
1993-03-13 00:32:10 +00:00
|
|
|
|
(add_set_cmd ("mipsfpu", class_support, var_boolean,
|
1993-02-22 23:43:03 +00:00
|
|
|
|
(char *) &mips_fpu,
|
|
|
|
|
"Set use of floating point coprocessor.\n\
|
|
|
|
|
Turn off to avoid using floating point instructions when calling functions\n\
|
|
|
|
|
or dealing with return values.", &setlist),
|
|
|
|
|
&showlist);
|
|
|
|
|
}
|