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* mips-tdep.c (heuristic_proc_start): Add more MIPS16 function

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prologue instructions.
This commit is contained in:
Maciej W. Rozycki 2007-07-20 17:29:59 +00:00
parent ce1f96de2e
commit 193774b320
2 changed files with 22 additions and 4 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2004-07-20 Chris Dearman <chris@mips.com>
* mips-tdep.c (heuristic_proc_start): Add more MIPS16 function
prologue instructions.
2007-07-20 Maciej W. Rozycki <macro@mips.com>
* mips-tdep.c (mips_next_pc): Use is_mips16_addr() instead of

21
gdb/mips-tdep.c
View file

@ -2396,15 +2396,28 @@ heuristic-fence-post' command.\n", paddr_nz (pc), paddr_nz (pc));
/* On MIPS16, any one of the following is likely to be the
start of a function:
extend save
save
entry
addiu sp,-n
daddiu sp,-n
extend -n followed by 'addiu sp,+n' or 'daddiu sp,+n' */
inst = mips_fetch_instruction (start_pc);
if (((inst & 0xf81f) == 0xe809 && (inst & 0x700) != 0x700) /* entry */
|| (inst & 0xff80) == 0x6380 /* addiu sp,-n */
|| (inst & 0xff80) == 0xfb80 /* daddiu sp,-n */
|| ((inst & 0xf810) == 0xf010 && seen_adjsp)) /* extend -n */
if ((inst & 0xff80) == 0x6480) /* save */
{
if (start_pc - instlen >= fence)
{
inst = mips_fetch_instruction (start_pc - instlen);
if ((inst & 0xf800) == 0xf000) /* extend */
start_pc -= instlen;
}
break;
}
else if (((inst & 0xf81f) == 0xe809
&& (inst & 0x700) != 0x700) /* entry */
|| (inst & 0xff80) == 0x6380 /* addiu sp,-n */
|| (inst & 0xff80) == 0xfb80 /* daddiu sp,-n */
|| ((inst & 0xf810) == 0xf010 && seen_adjsp)) /* extend -n */
break;
else if ((inst & 0xff00) == 0x6300 /* addiu sp */
|| (inst & 0xff00) == 0xfb00) /* daddiu sp */