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2003-03-05 Andrew Cagney <cagney@redhat.com>

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* d10v-tdep.c (struct frame_extra_info): Delete unused structure.
	(struct d10v_unwind_cache): Delete field "frameless".  Replace
	"next_addr" with "sp_offset".  Add "r11_offset".
	(d10v_frame_unwind_cache): Update.
	(prologue_find_regs): Update.  When "mv r11, sp", save the
	"sp_offset" in "r11_offset".  Recognize "st rn, @r11", note that
	RN was saved in r11_offset.
This commit is contained in:
Andrew Cagney 2003-03-05 20:57:28 +00:00
parent b257978619
commit 0d84311632
2 changed files with 40 additions and 27 deletions
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10
gdb/ChangeLog
View file

@ -1,3 +1,13 @@
2003-03-05 Andrew Cagney <cagney@redhat.com>
* d10v-tdep.c (struct frame_extra_info): Delete unused structure.
(struct d10v_unwind_cache): Delete field "frameless". Replace
"next_addr" with "sp_offset". Add "r11_offset".
(d10v_frame_unwind_cache): Update.
(prologue_find_regs): Update. When "mv r11, sp", save the
"sp_offset" in "r11_offset". Recognize "st rn, @r11", note that
RN was saved in r11_offset.
2003-03-05 Andrew Cagney <cagney@redhat.com>
* frame.c (deprecated_update_frame_pc_hack): Also update the the

57
gdb/d10v-tdep.c
View file

@ -45,13 +45,6 @@
#include "gdb_assert.h"
struct frame_extra_info
{
CORE_ADDR return_pc;
int frameless;
int size;
};
struct gdbarch_tdep
{
int a0_regnum;
@ -617,10 +610,13 @@ d10v_skip_prologue (CORE_ADDR pc)
struct d10v_unwind_cache
{
CORE_ADDR return_pc;
int frameless;
int size;
CORE_ADDR *saved_regs;
CORE_ADDR next_addr;
/* How far the SP and r11 (FP) have been offset from the start of
the stack frame (as defined by the previous frame's stack
pointer). */
LONGEST sp_offset;
LONGEST r11_offset;
int uses_frame;
void **regs;
};
@ -635,8 +631,8 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
if ((op & 0x7E1F) == 0x6C1F)
{
n = (op & 0x1E0) >> 5;
info->next_addr -= 2;
info->saved_regs[n] = info->next_addr;
info->sp_offset -= 2;
info->saved_regs[n] = info->sp_offset;
return 1;
}
@ -644,9 +640,9 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
else if ((op & 0x7E3F) == 0x6E1F)
{
n = (op & 0x1E0) >> 5;
info->next_addr -= 4;
info->saved_regs[n] = info->next_addr;
info->saved_regs[n + 1] = info->next_addr + 2;
info->sp_offset -= 4;
info->saved_regs[n] = info->sp_offset;
info->saved_regs[n + 1] = info->sp_offset + 2;
return 1;
}
@ -656,7 +652,7 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
n = (op & 0x1E) >> 1;
if (n == 0)
n = 16;
info->next_addr -= n;
info->sp_offset -= n;
return 1;
}
@ -664,6 +660,15 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
if (op == 0x417E)
{
info->uses_frame = 1;
info->r11_offset = info->sp_offset;
return 1;
}
/* st rn, @r11 */
if ((op & 0x7E1F) == 0x6816)
{
n = (op & 0x1E0) >> 5;
info->saved_regs[n] = info->r11_offset;
return 1;
}
@ -675,7 +680,7 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
if ((op & 0x7E1F) == 0x681E)
{
n = (op & 0x1E0) >> 5;
info->saved_regs[n] = info->next_addr;
info->saved_regs[n] = info->sp_offset;
return 1;
}
@ -683,8 +688,8 @@ prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op,
if ((op & 0x7E3F) == 0x3A1E)
{
n = (op & 0x1E0) >> 5;
info->saved_regs[n] = info->next_addr;
info->saved_regs[n + 1] = info->next_addr + 2;
info->saved_regs[n] = info->sp_offset;
info->saved_regs[n + 1] = info->sp_offset + 2;
return 1;
}
@ -714,12 +719,11 @@ d10v_frame_unwind_cache (struct frame_info *fi,
(*cache) = info;
info->saved_regs = frame_obstack_zalloc (SIZEOF_FRAME_SAVED_REGS);
info->frameless = 0;
info->size = 0;
info->return_pc = 0;
fp = get_frame_base (fi);
info->next_addr = 0;
info->sp_offset = 0;
pc = get_pc_function_start (get_frame_pc (fi));
@ -734,22 +738,22 @@ d10v_frame_unwind_cache (struct frame_info *fi,
{
/* add3 sp,sp,n */
short n = op & 0xFFFF;
info->next_addr += n;
info->sp_offset += n;
}
else if ((op & 0x3F0F0000) == 0x340F0000)
{
/* st rn, @(offset,sp) */
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
info->saved_regs[n] = info->next_addr + offset;
info->saved_regs[n] = info->sp_offset + offset;
}
else if ((op & 0x3F1F0000) == 0x350F0000)
{
/* st2w rn, @(offset,sp) */
short offset = op & 0xFFFF;
short n = (op >> 20) & 0xF;
info->saved_regs[n] = info->next_addr + offset;
info->saved_regs[n + 1] = info->next_addr + offset + 2;
info->saved_regs[n] = info->sp_offset + offset;
info->saved_regs[n + 1] = info->sp_offset + offset + 2;
}
else
break;
@ -774,7 +778,7 @@ d10v_frame_unwind_cache (struct frame_info *fi,
pc += 4;
}
info->size = -info->next_addr;
info->size = -info->sp_offset;
if (!(fp & 0xffff))
fp = d10v_read_sp ();
@ -782,7 +786,7 @@ d10v_frame_unwind_cache (struct frame_info *fi,
for (i = 0; i < NUM_REGS - 1; i++)
if (info->saved_regs[i])
{
info->saved_regs[i] = fp - (info->next_addr - info->saved_regs[i]);
info->saved_regs[i] = fp - (info->sp_offset - info->saved_regs[i]);
}
if (info->saved_regs[LR_REGNUM])
@ -810,7 +814,6 @@ d10v_frame_unwind_cache (struct frame_info *fi,
else
{
info->saved_regs[SP_REGNUM] = fp + info->size;
info->frameless = 1;
info->saved_regs[FP_REGNUM] = 0;
}
}