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Thu Sep 19 16:19:01 1996 Martin M. Hunt <hunt@pizza.cygnus.com>

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* d10v-tdep.c:  Stack chain should work now.
This commit is contained in:
Martin Hunt 1996-09-19 23:21:56 +00:00
parent c05d17211e
commit 81dc176f58
3 changed files with 26 additions and 27 deletions
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4
gdb/ChangeLog
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@ -1,4 +1,8 @@
start-sanitize-d10v
Thu Sep 19 16:19:01 1996 Martin M. Hunt <hunt@pizza.cygnus.com>
* d10v-tdep.c: Stack chain should work now.
Tue Sep 17 18:46:57 1996 Martin M. Hunt <hunt@pizza.cygnus.com>
* d10v-tdep.c, config/d10v/tm-d10v.h: Snapshot.

2
gdb/config/d10v/tm-d10v.h
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@ -60,7 +60,7 @@ extern CORE_ADDR d10v_skip_prologue ();
/* If your kernel resets the pc after the trap happens you may need to
define this before including this file. */
#define DECR_PC_AFTER_BREAK 0
#define DECR_PC_AFTER_BREAK 4
#define REGISTER_NAMES \
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \

47
gdb/d10v-tdep.c
View File

@ -22,6 +22,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "value.h"
#include "inferior.h"
#include "dis-asm.h"
@ -35,27 +36,26 @@ void
d10v_pop_frame ()
{
struct frame_info *frame = get_current_frame ();
CORE_ADDR fp, r13;
int fp, r13;
int regnum;
struct frame_saved_regs fsr;
char raw_buffer[8];
fp = FRAME_FP (frame);
/* printf("pop_frame 0x%x\n",fp); */
fp = (int)FRAME_FP (frame);
/* fill out fsr with the address of where each */
/* register was stored in the frame */
get_frame_saved_regs (frame, &fsr);
/* r13 contains the old PC. save it. */
r13 = read_register (13);
r13 = (int)read_register (13);
/* now update the current registers with the old values */
for (regnum = A0_REGNUM; regnum < A0_REGNUM+2 ; regnum++)
{
if (fsr.regs[regnum])
{
read_memory (fsr.regs[regnum] & 0xFFFF, raw_buffer, 8);
read_memory (fsr.regs[regnum], raw_buffer, 8);
write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 8);
}
}
@ -63,17 +63,16 @@ d10v_pop_frame ()
{
if (fsr.regs[regnum])
{
write_register (regnum, read_memory_integer (fsr.regs[regnum] & 0xFFFF, 2));
write_register (regnum, read_memory_unsigned_integer (fsr.regs[regnum], 2));
}
}
if (fsr.regs[PSW_REGNUM])
{
write_register (PSW_REGNUM, read_memory_integer (fsr.regs[PSW_REGNUM] & 0xFFFF, 2));
write_register (PSW_REGNUM, read_memory_unsigned_integer (fsr.regs[PSW_REGNUM], 2));
}
/* PC is set to r13 */
write_register (PC_REGNUM, r13);
/* printf("setting stack to %x\n",fp - frame->size); */
write_register (PC_REGNUM, (LONGEST)r13);
write_register (SP_REGNUM, fp - frame->size);
flush_cached_frames ();
}
@ -110,7 +109,6 @@ check_prologue (op)
if ((op & 0x7E3F) == 0x3A1E)
return 1;
return 0;
}
@ -126,7 +124,7 @@ d10v_skip_prologue (pc)
while (1)
{
op = read_memory_integer (pc, 4);
op = (unsigned long)read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
/* long instruction */
@ -151,20 +149,15 @@ d10v_skip_prologue (pc)
/* Given a GDB frame, determine the address of the calling function's frame.
This will be used to create a new GDB frame struct, and then
INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
For us, the frame address is its stack pointer value, so we look up
the function prologue to determine the caller's sp value, and return it. */
*/
CORE_ADDR
d10v_frame_chain (frame)
struct frame_info *frame;
{
struct frame_saved_regs fsr;
/* printf("frame_chain %x\n",frame->frame); */
d10v_frame_find_saved_regs (frame, &fsr);
/* printf("pc=%x\n",fsr.regs[PC_REGNUM]);
printf("fp=%x (%x)\n",fsr.regs[FP_REGNUM],read_memory_integer(fsr.regs[FP_REGNUM],2) & 0xffff); */
return read_memory_integer(fsr.regs[FP_REGNUM],2) & 0xffff;
return read_memory_unsigned_integer(fsr.regs[FP_REGNUM],2);
}
static int next_addr;
@ -257,7 +250,7 @@ d10v_frame_find_saved_regs (fi, fsr)
while (1)
{
op = read_memory_integer (pc, 4);
op = (unsigned long)read_memory_integer (pc, 4);
if ((op & 0xC0000000) == 0xC0000000)
{
/* long instruction */
@ -297,14 +290,17 @@ d10v_frame_find_saved_regs (fi, fsr)
}
fi->size = -next_addr;
fi->return_pc = read_register (13);
for (i=0; i<NUM_REGS; i++)
if (fsr->regs[i])
{
fsr->regs[i] = fp - (next_addr - fsr->regs[i]);
/* printf("register %d = *(%x) = %x\n",i,fsr->regs[i],read_memory_integer((fsr->regs[i]) & 0xffff, 2)); */
}
if (fsr->regs[13])
fi->return_pc = (read_memory_unsigned_integer(fsr->regs[13],2)-1) << 2;
else
fi->return_pc = (read_register(13) - 1) << 2;
}
void
@ -313,11 +309,11 @@ d10v_init_extra_frame_info (fromleaf, fi)
struct frame_info *fi;
{
struct frame_saved_regs dummy;
/* printf("extra init %x next=%x pc=%x\n",fi->frame,fi->next,fi->pc); */
/* fi->pc = fi->next->return_pc; */
if (fi->next && (fi->pc == 0))
fi->pc = fi->next->return_pc;
d10v_frame_find_saved_regs (fi, &dummy);
/* printf(" %x next=%x pc=%x\n",fi->frame,fi->next,fi->pc); */
}
static void
@ -353,12 +349,11 @@ show_regs (args, from_tty)
read_register_gen (A0_REGNUM, (char *)&num1);
read_register_gen (A0_REGNUM+1, (char *)&num2);
printf_filtered ("A0-A1 %010llx %010llx\n",num1, num2);
}
}
void
_initialize_d10v_tdep ()
{
struct cmd_list_element *c;
tm_print_insn = print_insn_d10v;
add_com ("regs", class_vars, show_regs, "Print all registers");
}