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authorPeter Schauer <Peter.Schauer@mytum.de>1994-01-22 20:45:55 +0000
committerPeter Schauer <Peter.Schauer@mytum.de>1994-01-22 20:45:55 +0000
commit5efd597b3c74f3a2e03f2508140a43203f5e73cb (patch)
tree0a5e27504f23547f6feca977d17182bcfb36c997 /gdb/mips-tdep.c
parente90445c997145c596588991a173d53e1a015e61a (diff)
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* mips-tdep.c (init_extra_frame_info): Use frame relative stack
pointer value when fixing up the frame at the start of a function
Diffstat (limited to 'gdb/mips-tdep.c')
-rw-r--r--gdb/mips-tdep.c53
1 files changed, 33 insertions, 20 deletions
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 454ab73..f8a2732 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -83,6 +83,8 @@ read_next_frame_reg(fi, regno)
#define SIGFRAME_BASE 0x12c /* sizeof(sigcontext) */
#define SIGFRAME_PC_OFF (-SIGFRAME_BASE + 2 * 4)
#define SIGFRAME_REGSAVE_OFF (-SIGFRAME_BASE + 3 * 4)
+#endif
+#ifndef SIGFRAME_REG_SIZE
#define SIGFRAME_REG_SIZE 4
#endif
for (; fi; fi = fi->next)
@@ -382,9 +384,11 @@ init_extra_frame_info(fci)
int kernel_trap = PROC_REG_MASK(proc_desc) & 1;
/* Fixup frame-pointer - only needed for top frame */
- /* This may not be quite right, if proc has a real frame register */
+ /* This may not be quite right, if proc has a real frame register.
+ Get the value of the frame relative sp, procedure might have been
+ interrupted by a signal at it's very start. */
if (fci->pc == PROC_LOW_ADDR(proc_desc) && !PROC_DESC_IS_DUMMY(proc_desc))
- fci->frame = read_register (SP_REGNUM);
+ fci->frame = READ_FRAME_REG(fci, SP_REGNUM);
else
fci->frame = READ_FRAME_REG(fci, PROC_FRAME_REG(proc_desc))
+ PROC_FRAME_OFFSET(proc_desc);
@@ -533,7 +537,6 @@ mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
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; };
@@ -561,10 +564,13 @@ mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
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;
- write_memory(sp, (char *)&buf, sizeof(CORE_ADDR));
- }
+ if (struct_return)
+ {
+ char buf[TARGET_PTR_BIT / HOST_CHAR_BIT];
+
+ store_address (buf, sizeof buf, struct_addr);
+ write_memory (sp, buf, sizeof buf);
+ }
return sp;
}
@@ -574,13 +580,13 @@ mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
void
mips_push_dummy_frame()
{
+ char buffer[MAX_REGISTER_RAW_SIZE];
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 */
@@ -621,8 +627,9 @@ mips_push_dummy_frame()
for (ireg = 32; --ireg >= 0; )
if (PROC_REG_MASK(proc_desc) & (1 << ireg))
{
- buffer = read_register (ireg);
- write_memory (save_address, (char *)&buffer, sizeof(REGISTER_TYPE));
+ store_unsigned_integer (buffer, REGISTER_RAW_SIZE (ireg),
+ read_register (ireg));
+ write_memory (save_address, buffer, REGISTER_RAW_SIZE (ireg));
save_address -= 4;
}
/* save floating-points registers starting with high order word */
@@ -630,21 +637,27 @@ mips_push_dummy_frame()
for (ireg = 32; --ireg >= 0; )
if (PROC_FREG_MASK(proc_desc) & (1 << ireg))
{
- buffer = read_register (ireg + FP0_REGNUM);
- write_memory (save_address, (char *)&buffer, 4);
+ store_unsigned_integer (buffer, 4, read_register (ireg + FP0_REGNUM));
+ write_memory (save_address, buffer, 4);
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);
- write_memory (sp - 4, (char *)&buffer, sizeof(REGISTER_TYPE));
- buffer = read_register (HI_REGNUM);
- write_memory (sp - 8, (char *)&buffer, sizeof(REGISTER_TYPE));
- buffer = read_register (LO_REGNUM);
- write_memory (sp - 12, (char *)&buffer, sizeof(REGISTER_TYPE));
- buffer = read_register (mips_fpu ? FCRCS_REGNUM : ZERO_REGNUM);
- write_memory (sp - 16, (char *)&buffer, sizeof(REGISTER_TYPE));
+ store_unsigned_integer (buffer, REGISTER_RAW_SIZE (PC_REGNUM),
+ read_register (PC_REGNUM));
+ write_memory (sp - 4, buffer, REGISTER_RAW_SIZE (PC_REGNUM));
+ store_unsigned_integer (buffer, REGISTER_RAW_SIZE (HI_REGNUM),
+ read_register (HI_REGNUM));
+ write_memory (sp - 8, buffer, REGISTER_RAW_SIZE (HI_REGNUM));
+ store_unsigned_integer (buffer, REGISTER_RAW_SIZE (LO_REGNUM),
+ read_register (LO_REGNUM));
+ write_memory (sp - 12, buffer, REGISTER_RAW_SIZE (LO_REGNUM));
+ store_unsigned_integer
+ (buffer,
+ REGISTER_RAW_SIZE (FCRCS_REGNUM),
+ mips_fpu ? read_register (FCRCS_REGNUM) : 0);
+ write_memory (sp - 16, buffer, REGISTER_RAW_SIZE (FCRCS_REGNUM));
sp -= 4 * (GEN_REG_SAVE_COUNT
+ (mips_fpu ? FLOAT_REG_SAVE_COUNT : 0)
+ SPECIAL_REG_SAVE_COUNT);