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Thu Sep 8 17:14:43 1994 Steve Chamberlain (sac@jonny.cygnus.com)

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* remote.c (fromhex): Make error more explicit.
	(read_frame): Don't print bad checksum information unless
	remote_debugging.  Don't use repeat count unless it's > 0.
	* remote-e7000.c (expect): When echoing, ignore multiple newlines.
	(e7000_insert_breakpoint, e7000_remove_breakpoint, target_ops): Optionally
	cope with BC style breakpoints.
	(e7000_command):  After command send directly to the E7000 mark
	registers as changed.
	(why_stop, e7000_wait: Understand BC style stop condition.
	* sh-tdep.c (sh_skip_prologue):  Understand more complicated
	sequences.  (frame_find_saved_regs): Likewise.
	* config/h8500/tm-h8500.h (target_write_pc, TARGET_WRITE_PC):
	Handle extra arg.
	* config/i386/xm-go32.h (GDBINIT_FILENAME): Set to gdb.ini.
	(more work here to come)
	* config/sh/tm-sh.h (EXTRA_FRAME_INFO): Add f_offset and leaf_function
	fields.
This commit is contained in:
Steve Chamberlain
1994-09-09 00:35:09 +00:00
parent eb4fd16f4d
commit c4deed18c0
2 changed files with 68 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
gdb/ChangeLog
View File

@ -1,3 +1,23 @@
Thu Sep 8 17:14:43 1994 Steve Chamberlain (sac@jonny.cygnus.com)
* remote.c (fromhex): Make error more explicit.
(read_frame): Don't print bad checksum information unless
remote_debugging. Don't use repeat count unless it's > 0.
* remote-e7000.c (expect): When echoing, ignore multiple newlines.
(e7000_insert_breakpoint, e7000_remove_breakpoint, target_ops): Optionally
cope with BC style breakpoints.
(e7000_command): After command send directly to the E7000 mark
registers as changed.
(why_stop, e7000_wait: Understand BC style stop condition.
* sh-tdep.c (sh_skip_prologue): Understand more complicated
sequences. (frame_find_saved_regs): Likewise.
* config/h8500/tm-h8500.h (target_write_pc, TARGET_WRITE_PC):
Handle extra arg.
* config/i386/xm-go32.h (GDBINIT_FILENAME): Set to gdb.ini.
(more work here to come)
* config/sh/tm-sh.h (EXTRA_FRAME_INFO): Add f_offset and leaf_function
fields.
Thu Sep 8 16:15:34 1994 J.T. Conklin (jtc@rtl.cygnus.com)
* sparclite/Makefile.in: Assorted stuff needed for eload.

58
gdb/sh-tdep.c
View File

@ -47,7 +47,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf)
#define IS_MOV_SP_FP(x) ((x) == 0x6ef3)
#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00)
#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00)
#define IS_SHLL_R3(x) ((x) == 0x4300)
#define IS_ADD_R3SP(x) ((x) == 0x3f3c)
/* Skip any prologue before the guts of a function */
@ -61,7 +63,11 @@ sh_skip_prologue (start_pc)
w = read_memory_integer (start_pc, 2);
while (IS_STS (w)
|| IS_PUSH (w)
|| IS_MOV_SP_FP (w))
|| IS_MOV_SP_FP (w)
|| IS_MOV_R3(w)
|| IS_ADD_R3SP(w)
|| IS_ADD_SP(w)
|| IS_SHLL_R3(w))
{
start_pc += 2;
w = read_memory_integer (start_pc, 2);
@ -94,7 +100,7 @@ sh_frame_chain (thisframe)
FRAME thisframe;
{
if (!inside_entry_file (thisframe->pc))
return (read_memory_integer (FRAME_FP (thisframe), 4));
return (read_memory_integer (FRAME_FP (thisframe) + thisframe->f_offset, 4));
else
return 0;
}
@ -118,11 +124,16 @@ frame_find_saved_regs (fi, fsr)
int pc;
int opc;
int insn;
int hadf;
int r3_val = 0;
opc = pc = get_pc_function_start (fi->pc);
insn = read_memory_integer (pc, 2);
fi->leaf_function = 1;
fi->f_offset = 0;
for (rn = 0; rn < NUM_REGS; rn++)
where[rn] = -1;
@ -146,8 +157,28 @@ frame_find_saved_regs (fi, fsr)
pc += 2;
where[PR_REGNUM] = depth;
insn = read_memory_integer (pc, 2);
/* If we're storing the pr then this isn't a leaf */
fi->leaf_function = 0;
depth += 4;
}
else if (IS_MOV_R3 (insn))
{
r3_val = (char)(insn & 0xff);
pc+=2;
insn = read_memory_integer (pc, 2);
}
else if (IS_SHLL_R3 (insn))
{
r3_val <<=1;
pc+=2;
insn = read_memory_integer (pc, 2);
}
else if (IS_ADD_R3SP (insn))
{
depth += -r3_val;
pc+=2;
insn = read_memory_integer (pc, 2);
}
else if (IS_ADD_SP (insn))
{
pc += 2;
@ -184,18 +215,25 @@ frame_find_saved_regs (fi, fsr)
fsr->regs[SP_REGNUM] = fi->frame - 4;
}
fi->f_offset = depth - where[FP_REGNUM] - 4;
/* Work out the return pc - either from the saved pr or the pr
value */
if (fsr->regs[PR_REGNUM])
{
fi->return_pc = read_memory_integer (fsr->regs[PR_REGNUM], 4) + 4;
}
else
/* Just called, so dig out the real return */
if (fi->return_pc == 0)
{
fi->return_pc = read_register (PR_REGNUM) + 4;
}
else {
if (fsr->regs[PR_REGNUM])
{
fi->return_pc = read_memory_integer (fsr->regs[PR_REGNUM], 4) + 4;
}
else
{
fi->return_pc = read_register (PR_REGNUM) + 4;
}
}
}
/* initialize the extra info saved in a FRAME */