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-rw-r--r--gdb/rs6000-nat.c57
1 files changed, 0 insertions, 57 deletions
diff --git a/gdb/rs6000-nat.c b/gdb/rs6000-nat.c
index 1b09680..68fb5c9 100644
--- a/gdb/rs6000-nat.c
+++ b/gdb/rs6000-nat.c
@@ -76,8 +76,6 @@
# define ARCH64() (register_size (target_gdbarch (), 0) == 8)
#endif
-static void exec_one_dummy_insn (struct regcache *);
-
static target_xfer_partial_ftype rs6000_xfer_shared_libraries;
/* Given REGNO, a gdb register number, return the corresponding
@@ -253,14 +251,6 @@ store_register (struct regcache *regcache, int regno)
/* Fixed-point registers. */
else
{
- if (regno == gdbarch_sp_regnum (gdbarch))
- /* Execute one dummy instruction (which is a breakpoint) in inferior
- process to give kernel a chance to do internal housekeeping.
- Otherwise the following ptrace(2) calls will mess up user stack
- since kernel will get confused about the bottom of the stack
- (%sp). */
- exec_one_dummy_insn (regcache);
-
/* The PT_WRITE_GPR operation is rather odd. For 32-bit inferiors,
the register's value is passed by value, but for 64-bit inferiors,
the address of a buffer containing the value is passed. */
@@ -533,53 +523,6 @@ rs6000_wait (struct target_ops *ops,
return pid_to_ptid (pid);
}
-
-/* Execute one dummy breakpoint instruction. This way we give the kernel
- a chance to do some housekeeping and update inferior's internal data,
- including u_area. */
-
-static void
-exec_one_dummy_insn (struct regcache *regcache)
-{
-#define DUMMY_INSN_ADDR AIX_TEXT_SEGMENT_BASE+0x200
-
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- int ret, status, pid;
- CORE_ADDR prev_pc;
- void *bp;
-
- /* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
- assume that this address will never be executed again by the real
- code. */
-
- bp = deprecated_insert_raw_breakpoint (gdbarch, NULL, DUMMY_INSN_ADDR);
-
- /* You might think this could be done with a single ptrace call, and
- you'd be correct for just about every platform I've ever worked
- on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
- the inferior never hits the breakpoint (it's also worth noting
- powerpc-ibm-aix4.1.3 works correctly). */
- prev_pc = regcache_read_pc (regcache);
- regcache_write_pc (regcache, DUMMY_INSN_ADDR);
- if (ARCH64 ())
- ret = rs6000_ptrace64 (PT_CONTINUE, ptid_get_pid (inferior_ptid),
- 1, 0, NULL);
- else
- ret = rs6000_ptrace32 (PT_CONTINUE, ptid_get_pid (inferior_ptid),
- (int *) 1, 0, NULL);
-
- if (ret != 0)
- perror (_("pt_continue"));
-
- do
- {
- pid = waitpid (ptid_get_pid (inferior_ptid), &status, 0);
- }
- while (pid != ptid_get_pid (inferior_ptid));
-
- regcache_write_pc (regcache, prev_pc);
- deprecated_remove_raw_breakpoint (gdbarch, bp);
-}
/* Set the current architecture from the host running GDB. Called when