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| author | Kevin Buettner <kevinb@redhat.com> | 2002-04-09 01:41:46 +0000 |
|---|---|---|
| committer | Kevin Buettner <kevinb@redhat.com> | 2002-04-09 01:41:46 +0000 |
| commit | 7c40d5414cfaca09efd0a0249382bbff738b034a (patch) | |
| tree | 11d4191a3bc0428709197fd9129b8cdf9bc0152c | |
| parent | cc9836a8aaec1ed1bf4cb5dce7158eb4c1fcc940 (diff) | |
| download | fsf-binutils-gdb-7c40d5414cfaca09efd0a0249382bbff738b034a.zip fsf-binutils-gdb-7c40d5414cfaca09efd0a0249382bbff738b034a.tar.gz fsf-binutils-gdb-7c40d5414cfaca09efd0a0249382bbff738b034a.tar.bz2 | |
* rs6000-tdep.c (rs6000_software_single_step): Use
rs6000_breakpoint_from_pc() to fetch breakpoint instruction
and size. Use target_insert_breakpoint() and
target_remove_breakpoint() to insert and remove breakpoints
instead of explicit memory reads and writes.
| -rw-r--r-- | gdb/ChangeLog | 9 | ||||
| -rw-r--r-- | gdb/rs6000-tdep.c | 20 |
2 files changed, 16 insertions, 13 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 70ef97c..8747175 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,14 @@ 2002-04-08 Kevin Buettner <kevinb@redhat.com> + From Jimi X <jimix@watson.ibm.com>: + * rs6000-tdep.c (rs6000_software_single_step): Use + rs6000_breakpoint_from_pc() to fetch breakpoint instruction + and size. Use target_insert_breakpoint() and + target_remove_breakpoint() to insert and remove breakpoints + instead of explicit memory reads and writes. + +2002-04-08 Kevin Buettner <kevinb@redhat.com> + * config/powerpc/tm-ppc-eabi.h (ELF_OBJECT_FORMAT): Delete. * rs6000-tdep.c (rs6000_push_arguments): Eliminate ELF_OBJECT_FORMAT ifdef. diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index 18e6619..7f768c0 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -299,11 +299,9 @@ void rs6000_software_single_step (enum target_signal signal, int insert_breakpoints_p) { -#define INSNLEN(OPCODE) 4 - - static char le_breakp[] = LITTLE_BREAKPOINT; - static char be_breakp[] = BIG_BREAKPOINT; - char *breakp = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? be_breakp : le_breakp; + CORE_ADDR dummy; + int breakp_sz; + char *breakp = rs6000_breakpoint_from_pc (&dummy, &breakp_sz); int ii, insn; CORE_ADDR loc; CORE_ADDR breaks[2]; @@ -316,7 +314,7 @@ rs6000_software_single_step (enum target_signal signal, insn = read_memory_integer (loc, 4); - breaks[0] = loc + INSNLEN (insn); + breaks[0] = loc + breakp_sz; opcode = insn >> 26; breaks[1] = branch_dest (opcode, insn, loc, breaks[0]); @@ -332,10 +330,7 @@ rs6000_software_single_step (enum target_signal signal, /* ignore invalid breakpoint. */ if (breaks[ii] == -1) continue; - - read_memory (breaks[ii], stepBreaks[ii].data, 4); - - write_memory (breaks[ii], breakp, 4); + target_insert_breakpoint (breaks[ii], stepBreaks[ii].data); stepBreaks[ii].address = breaks[ii]; } @@ -346,9 +341,8 @@ rs6000_software_single_step (enum target_signal signal, /* remove step breakpoints. */ for (ii = 0; ii < 2; ++ii) if (stepBreaks[ii].address != 0) - write_memory - (stepBreaks[ii].address, stepBreaks[ii].data, 4); - + target_remove_breakpoint (stepBreaks[ii].address, + stepBreaks[ii].data); } errno = 0; /* FIXME, don't ignore errors! */ /* What errors? {read,write}_memory call error(). */ |