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* mips-tdep.c (mips32_heuristic_proc_desc): Clear temp_saved_regs 

on restart.  Fixes problem with backtracing through functions that
	use virtual frame pointers.
This commit is contained in:
Stu Grossman 1998-12-19 17:56:40 +00:00
parent 27f6ea6995
commit 0e52a532e4
2 changed files with 18 additions and 6 deletions
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9
gdb/ChangeLog
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@ -1,5 +1,14 @@
Sat Dec 19 09:55:09 1998 Stu Grossman <grossman@babylon-5.cygnus.com>
* mips-tdep.c (mips32_heuristic_proc_desc): Clear temp_saved_regs
on restart. Fixes problem with backtracing through functions that
use virtual frame pointers.
Fri Dec 18 14:23:34 1998 Andrew Cagney <cagney@chook>
* mips-tdep.c (mips_push_arguments): Don't left-shift small
structs being passed in a register when an O64 target.
* config/mips/tm-mips.h (enum mips_fpu_type, mips_fpu): Move to
mips-tdep.c.

15
gdb/mips-tdep.c
View File

@ -1442,6 +1442,7 @@ mips32_heuristic_proc_desc(start_pc, limit_pc, next_frame, sp)
CORE_ADDR cur_pc;
CORE_ADDR frame_addr = 0; /* Value of $r30. Used by gcc for frame-pointer */
restart:
memset (&temp_saved_regs, '\0', sizeof(struct frame_saved_regs));
PROC_FRAME_OFFSET(&temp_proc_desc) = 0;
PROC_FRAME_ADJUST (&temp_proc_desc) = 0; /* offset of FP from SP */
for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS_INSTLEN)
@ -1990,13 +1991,15 @@ mips_push_arguments(nargs, args, sp, struct_return, struct_addr)
It does not seem to be necessary to do the
same for integral types.
Also don't do this adjustment on EABI targets. */
Also don't do this adjustment on EABI and O64
binaries. */
if (!MIPS_EABI &&
TARGET_BYTE_ORDER == BIG_ENDIAN &&
partial_len < MIPS_REGSIZE &&
(typecode == TYPE_CODE_STRUCT ||
typecode == TYPE_CODE_UNION))
if (!MIPS_EABI
&& (MIPS_REGSIZE < 8)
&& TARGET_BYTE_ORDER == BIG_ENDIAN
&& (partial_len < MIPS_REGSIZE)
&& (typecode == TYPE_CODE_STRUCT ||
typecode == TYPE_CODE_UNION))
regval <<= ((MIPS_REGSIZE - partial_len) *
TARGET_CHAR_BIT);