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author | Ulrich Weigand <uweigand@de.ibm.com> | 2010-06-19 17:59:05 +0000 |
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committer | Ulrich Weigand <uweigand@de.ibm.com> | 2010-06-19 17:59:05 +0000 |
commit | 6b7be6f008edaa3c2bcdcadcd88724cf4868601a (patch) | |
tree | b472841154c9c159b37417892005b617b93fd523 /gdb/spu-tdep.c | |
parent | 21f120f5227d635d6151668d12234a6fd32897b2 (diff) | |
download | gdb-6b7be6f008edaa3c2bcdcadcd88724cf4868601a.tar.gz |
* spu-tdep.c (spu_frame_unwind_cache): Use LSLR register
value instead of hard-coded SPU_LS_SIZE.
(spu_software_single_step): Likewise.
* spu-tdep.h (SPU_LS_SIZE): Remove.
Diffstat (limited to 'gdb/spu-tdep.c')
-rw-r--r-- | gdb/spu-tdep.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/gdb/spu-tdep.c b/gdb/spu-tdep.c index 072ae8c7340..b3f50a1e9c1 100644 --- a/gdb/spu-tdep.c +++ b/gdb/spu-tdep.c @@ -987,8 +987,14 @@ spu_frame_unwind_cache (struct frame_info *this_frame, { CORE_ADDR reg; LONGEST backchain; + ULONGEST lslr; int status; + /* Get local store limit. */ + lslr = get_frame_register_unsigned (this_frame, SPU_LSLR_REGNUM); + if (!lslr) + lslr = (ULONGEST) -1; + /* Get the backchain. */ reg = get_frame_register_unsigned (this_frame, SPU_SP_REGNUM); status = safe_read_memory_integer (SPUADDR (id, reg), 4, byte_order, @@ -996,10 +1002,10 @@ spu_frame_unwind_cache (struct frame_info *this_frame, /* A zero backchain terminates the frame chain. Also, sanity check against the local store size limit. */ - if (status && backchain > 0 && backchain < SPU_LS_SIZE) + if (status && backchain > 0 && backchain <= lslr) { /* Assume the link register is saved into its slot. */ - if (backchain + 16 < SPU_LS_SIZE) + if (backchain + 16 <= lslr) info->saved_regs[SPU_LR_REGNUM].addr = SPUADDR (id, backchain + 16); /* Frame bases. */ @@ -1501,6 +1507,7 @@ spu_software_single_step (struct frame_info *frame) unsigned int insn; int offset, reg; gdb_byte buf[4]; + ULONGEST lslr; pc = get_frame_pc (frame); @@ -1508,13 +1515,18 @@ spu_software_single_step (struct frame_info *frame) return 1; insn = extract_unsigned_integer (buf, 4, byte_order); + /* Get local store limit. */ + lslr = get_frame_register_unsigned (frame, SPU_LSLR_REGNUM); + if (!lslr) + lslr = (ULONGEST) -1; + /* Next sequential instruction is at PC + 4, except if the current instruction is a PPE-assisted call, in which case it is at PC + 8. Wrap around LS limit to be on the safe side. */ if ((insn & 0xffffff00) == 0x00002100) - next_pc = (SPUADDR_ADDR (pc) + 8) & (SPU_LS_SIZE - 1); + next_pc = (SPUADDR_ADDR (pc) + 8) & lslr; else - next_pc = (SPUADDR_ADDR (pc) + 4) & (SPU_LS_SIZE - 1); + next_pc = (SPUADDR_ADDR (pc) + 4) & lslr; insert_single_step_breakpoint (gdbarch, aspace, SPUADDR (SPUADDR_SPU (pc), next_pc)); @@ -1531,7 +1543,7 @@ spu_software_single_step (struct frame_info *frame) target += extract_unsigned_integer (buf, 4, byte_order) & -4; } - target = target & (SPU_LS_SIZE - 1); + target = target & lslr; if (target != next_pc) insert_single_step_breakpoint (gdbarch, aspace, SPUADDR (SPUADDR_SPU (pc), target)); |