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* rs6000-tdep.c (single_step): Misc cleanups (CORE_ADDR not int, 

don't use sizeof(int) for target stuff, etc).
This commit is contained in:
Jim Kingdon 1993-03-26 19:55:57 +00:00
parent 3c02636b4e
commit 030fb5cb81
1 changed files with 16 additions and 12 deletions
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28
gdb/rs6000-tdep.c
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@ -22,6 +22,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "inferior.h"
#include "symtab.h"
#include "target.h"
#include "gdbcore.h"
#include "xcoffsolib.h"
@ -49,8 +50,10 @@ int one_stepped;
/* Breakpoint shadows for the single step instructions will be kept here. */
static struct sstep_breaks {
int address;
int data;
/* Address, or 0 if this is not in use. */
CORE_ADDR address;
/* Shadow contents. */
char data[4];
} stepBreaks[2];
/* Static function prototypes */
@ -124,15 +127,15 @@ single_step (signal)
#define INSNLEN(OPCODE) 4
static char breakp[] = BREAKPOINT;
int ii, insn, ret, loc;
int breaks[2], opcode;
int ii, insn;
CORE_ADDR loc;
CORE_ADDR breaks[2];
int opcode;
if (!one_stepped) {
loc = read_pc ();
ret = read_memory (loc, &insn, sizeof (int));
if (ret)
printf ("Error in single_step()!!\n");
read_memory (loc, &insn, 4);
breaks[0] = loc + INSNLEN(insn);
opcode = insn >> 26;
@ -142,7 +145,7 @@ single_step (signal)
if (breaks[1] == breaks[0])
breaks[1] = -1;
stepBreaks[1].address = -1;
stepBreaks[1].address = 0;
for (ii=0; ii < 2; ++ii) {
@ -150,9 +153,9 @@ single_step (signal)
if ( breaks[ii] == -1)
continue;
read_memory (breaks[ii], &(stepBreaks[ii].data), sizeof(int));
read_memory (breaks[ii], stepBreaks[ii].data, 4);
ret = write_memory (breaks[ii], breakp, sizeof(int));
write_memory (breaks[ii], breakp, 4);
stepBreaks[ii].address = breaks[ii];
}
@ -161,13 +164,14 @@ single_step (signal)
/* remove step breakpoints. */
for (ii=0; ii < 2; ++ii)
if (stepBreaks[ii].address != -1)
if (stepBreaks[ii].address != 0)
write_memory
(stepBreaks[ii].address, &(stepBreaks[ii].data), sizeof(int));
(stepBreaks[ii].address, stepBreaks[ii].data, 4);
one_stepped = 0;
}
errno = 0; /* FIXME, don't ignore errors! */
/* What errors? {read,write}_memory call error(). */
}