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Index: head/lib/libproc/proc_bkpt.c
===================================================================
--- head/lib/libproc/proc_bkpt.c
+++ head/lib/libproc/proc_bkpt.c
@@ -68,6 +68,14 @@
#error "Add support for your architecture"
#endif
+/*
+ * Use 4-bytes holder for breakpoint instruction on all the platforms.
+ * Works for x86 as well until it is endian-little platform.
+ * (We are coping one byte only on x86 from this 4-bytes piece of
+ * memory).
+ */
+typedef uint32_t instr_t;
+
static int
proc_stop(struct proc_handle *phdl)
{
@@ -92,8 +100,9 @@
unsigned long *saved)
{
struct ptrace_io_desc piod;
- unsigned long paddr, caddr;
+ unsigned long caddr;
int ret = 0, stopped;
+ instr_t instr;
*saved = 0;
if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
@@ -115,10 +124,10 @@
* Read the original instruction.
*/
caddr = address;
- paddr = 0;
+ instr = 0;
piod.piod_op = PIOD_READ_I;
piod.piod_offs = (void *)caddr;
- piod.piod_addr = &paddr;
+ piod.piod_addr = &instr;
piod.piod_len = BREAKPOINT_INSTR_SZ;
if (ptrace(PT_IO, proc_getpid(phdl), (caddr_t)&piod, 0) < 0) {
DPRINTF("ERROR: couldn't read instruction at address 0x%"
@@ -126,15 +135,15 @@
ret = -1;
goto done;
}
- *saved = paddr;
+ *saved = instr;
/*
* Write a breakpoint instruction to that address.
*/
caddr = address;
- paddr = BREAKPOINT_INSTR;
+ instr = BREAKPOINT_INSTR;
piod.piod_op = PIOD_WRITE_I;
piod.piod_offs = (void *)caddr;
- piod.piod_addr = &paddr;
+ piod.piod_addr = &instr;
piod.piod_len = BREAKPOINT_INSTR_SZ;
if (ptrace(PT_IO, proc_getpid(phdl), (caddr_t)&piod, 0) < 0) {
DPRINTF("ERROR: couldn't write instruction at address 0x%"
@@ -156,8 +165,9 @@
unsigned long saved)
{
struct ptrace_io_desc piod;
- unsigned long paddr, caddr;
+ unsigned long caddr;
int ret = 0, stopped;
+ instr_t instr;
if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
phdl->status == PS_IDLE) {
@@ -178,10 +188,10 @@
* Overwrite the breakpoint instruction that we setup previously.
*/
caddr = address;
- paddr = saved;
+ instr = saved;
piod.piod_op = PIOD_WRITE_I;
piod.piod_offs = (void *)caddr;
- piod.piod_addr = &paddr;
+ piod.piod_addr = &instr;
piod.piod_len = BREAKPOINT_INSTR_SZ;
if (ptrace(PT_IO, proc_getpid(phdl), (caddr_t)&piod, 0) < 0) {
DPRINTF("ERROR: couldn't write instruction at address 0x%"

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