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* mips-tdep.c, mipsread.c, tm-mips.h: Get rid of ".gdbinfo."

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symbol.  #define MIPS_EFI_SYMBOL_NAME instead.  Use different
value so that demangler won't be invoked.  This greatly speeds up
stepping.
* mips-tdep.c (mips_pop_frame):  Rewrite handling of
linked_proc_info so that it properly deallocates the appropriate
item after it is done with it instead of before.
* Don't pass bogus frame pointer to create_new_frame().  Just
leave it as zero so that lower level code will figure out the
correct value.
This commit is contained in:
Stu Grossman
1992-10-15 08:36:30 +00:00
parent 7536558918
commit dac4929a6d
4 changed files with 163 additions and 93 deletions
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70
gdb/mips-tdep.c
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@@ -79,7 +79,7 @@ struct linked_proc_info
{
struct mips_extra_func_info info;
struct linked_proc_info *next;
} * linked_proc_desc_table = NULL;
} *linked_proc_desc_table = NULL;
#define READ_FRAME_REG(fi, regno) read_next_frame_reg((fi)->next, regno)
@@ -231,7 +231,7 @@ find_proc_desc(pc, next_frame)
mips_extra_func_info_t proc_desc;
struct block *b = block_for_pc(pc);
struct symbol *sym =
b ? lookup_symbol(".gdbinfo.", b, LABEL_NAMESPACE, 0, NULL) : NULL;
b ? lookup_symbol(MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, 0, NULL) : NULL;
if (sym)
{
@@ -330,7 +330,7 @@ init_extra_frame_info(fci)
fci->frame = read_register (SP_REGNUM);
else
fci->frame = READ_FRAME_REG(fci, PROC_FRAME_REG(proc_desc))
+ PROC_FRAME_OFFSET(proc_desc);
+ PROC_FRAME_OFFSET(proc_desc);
}
if (proc_desc == &temp_proc_desc)
@@ -525,35 +525,57 @@ mips_push_dummy_frame()
void
mips_pop_frame()
{ register int regnum;
{
register int regnum;
FRAME frame = get_current_frame ();
CORE_ADDR new_sp = frame->frame;
mips_extra_func_info_t proc_desc = frame->proc_desc;
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 ()));
if (PROC_DESC_IS_DUMMY(proc_desc))
{
struct linked_proc_info **ptr = &linked_proc_desc_table;;
for (; &ptr[0]->info != proc_desc; ptr = &ptr[0]->next )
if (ptr[0] == NULL) abort();
*ptr = ptr[0]->next;
free (ptr[0]);
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);
write_register (HI_REGNUM, read_memory_integer(new_sp - 8, 4));
write_register (LO_REGNUM, read_memory_integer(new_sp - 12, 4));
write_register (FCRCS_REGNUM, read_memory_integer(new_sp - 16, 4));
}
write_register (PC_REGNUM, FRAME_SAVED_PC(frame));
if (frame->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 ();
set_current_frame (create_new_frame (new_sp, read_pc ()));
}
static void
@@ -709,7 +731,7 @@ mips_skip_prologue(pc)
b = block_for_pc(pc);
if (!b) return pc;
f = lookup_symbol(".gdbinfo.", b, LABEL_NAMESPACE, 0, NULL);
f = lookup_symbol(MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, 0, NULL);
if (!f) return pc;
/* Ideally, I would like to use the adjusted info
from mips_frame_info(), but for all practical