FreeChainXenon/binutils-gdb
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* sh-tdep.c (sh_skip_prologue): Also recognize fmov insns.

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(sh_frame_find_saved_regs): Recognize fmov insns and adjust
	stack push count accordingly.
	* sh-tdep.c (IS_FMOV, FPSCR_SZ): New defines
This commit is contained in:
Fred Fish 1997-06-21 03:50:11 +00:00
parent 73bb488673
commit 4a9d4495eb
2 changed files with 36 additions and 3 deletions
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9
gdb/ChangeLog
View file

@ -1,3 +1,12 @@
start-sanitize-sh4
Fri Jun 20 17:58:34 1997 Fred Fish <fnf@cygnus.com>
* sh-tdep.c (sh_skip_prologue): Also recognize fmov insns.
(sh_frame_find_saved_regs): Recognize fmov insns and adjust
stack push count accordingly.
* sh-tdep.c (IS_FMOV, FPSCR_SZ): New defines
end-sanitize-sh4
Thu Jun 19 08:18:48 1997 Mark Alexander <marka@cygnus.com>
* utils.c (floatformat_from_doublest): Improve test for infinity.

30
gdb/sh-tdep.c
View file

@ -113,6 +113,10 @@ struct {
#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00)
#define IS_SHLL_R3(x) ((x) == 0x4300)
#define IS_ADD_R3SP(x) ((x) == 0x3f3c)
/* start-sanitize-sh4 */
#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b)
#define FPSCR_SZ (1 << 20)
/* end-sanitize-sh4 */
/* Skip any prologue before the guts of a function */
@ -124,6 +128,9 @@ sh_skip_prologue (start_pc)
w = read_memory_integer (start_pc, 2);
while (IS_STS (w)
/* start-sanitize-sh4 */
|| IS_FMOV (w)
/* end-sanitize-sh4 */
|| IS_PUSH (w)
|| IS_MOV_SP_FP (w)
|| IS_MOV_R3 (w)
@ -240,9 +247,11 @@ sh_frame_find_saved_regs (fi, fsr)
depth = 0;
/* Loop around examining the prologue insns, but give up
after 15 of them, since we're getting silly then */
while (pc < opc + 15 * 2)
/* Loop around examining the prologue insns until we find something
that does not appear to be part of the prologue. But give up
after 20 of them, since we're getting silly then. */
while (pc < opc + 20 * 2)
{
/* See where the registers will be saved to */
if (IS_PUSH (insn))
@ -286,6 +295,21 @@ sh_frame_find_saved_regs (fi, fsr)
depth -= ((insn & 0xff) ^ 0x80) - 0x80;
insn = read_memory_integer (pc, 2);
}
/* start-sanitize-sh4 */
else if (IS_FMOV (insn))
{
pc += 2;
insn = read_memory_integer (pc, 2);
if (read_register (FPSCR_REGNUM) & FPSCR_SZ)
{
depth += 8;
}
else
{
depth += 4;
}
}
/* end-sanitize-sh4 */
else
break;
}