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Fix frame unwinding for 68hc11

This commit is contained in:
Stephane Carrez 2000-09-05 20:57:25 +00:00
parent 4d72d17a49
commit 6148eca7f8
2 changed files with 16 additions and 0 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2000-09-06 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* m68hc11-tdep.c (m68hc11_frame_chain): Check for pc in call dummy.
(m68hc11_guess_from_prologue): 'des' instruction to allocate 1 byte
on the stack can appear in the prologue.
2000-09-05 Michael Snyder <msnyder@cleaver.cygnus.com>
* sol-thread.c (ps_pdmodel): Protect with an ifdef.

10
gdb/m68hc11-tdep.c
View File

@ -378,6 +378,7 @@ m68hc11_guess_from_prologue (CORE_ADDR pc, CORE_ADDR fp,
#define OP_ADDD (0xc3)
#define OP_TXS (0x35)
#define OP_TYS (0x35)
#define OP_DES (0x34)
/* The 68hc11 stack is as follows:
@ -469,6 +470,12 @@ m68hc11_guess_from_prologue (CORE_ADDR pc, CORE_ADDR fp,
add_sp_mode = 1;
pc += 2;
}
/* des to allocate 1 byte on the stack */
else if (op0 == OP_DES)
{
pc += 1;
size += 1;
}
else if (op0 == OP_PAGE2 && op1 == OP_TSY && op2 == OP_PAGE2)
{
op0 = read_memory_unsigned_integer (pc + 3, 1);
@ -615,6 +622,9 @@ m68hc11_frame_chain (struct frame_info *frame)
{
CORE_ADDR addr;
if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
return frame->frame; /* dummy frame same as caller's frame */
if (frame->extra_info->return_pc == 0
|| inside_entry_file (frame->extra_info->return_pc))
return (CORE_ADDR) 0;