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| author | Petr Sorfa <petrs@caldera.com> | 2002-05-10 16:08:24 +0000 |
|---|---|---|
| committer | Petr Sorfa <petrs@caldera.com> | 2002-05-10 16:08:24 +0000 |
| commit | 9813b58bb735e42f06d389075cce62ae4fdd128b (patch) | |
| tree | acc23d9b60d588abced817057fcb51e13b4d26de /gdb/ia64-tdep.c | |
| parent | 2516110caf524381d85589a2e1413e16c60bbe8e (diff) | |
| download | gdb-9813b58bb735e42f06d389075cce62ae4fdd128b.tar.gz | |
Handle breakpoints on L instruction type in MLX instruction bundle by
moving the breakpoint to the third slot (X instruction type) as L holds
only data.
Diffstat (limited to 'gdb/ia64-tdep.c')
| -rw-r--r-- | gdb/ia64-tdep.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c index 4b141526389..ab7e4674f75 100644 --- a/gdb/ia64-tdep.c +++ b/gdb/ia64-tdep.c @@ -564,6 +564,7 @@ ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache) int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER; long long instr; int val; + int template; if (slotnum > 2) error("Can't insert breakpoint for slot numbers greater than 2."); @@ -571,6 +572,15 @@ ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache) addr &= ~0x0f; val = target_read_memory (addr, bundle, BUNDLE_LEN); + + /* Check for L type instruction in 2nd slot, if present then + bump up the slot number to the 3rd slot */ + template = extract_bit_field (bundle, 0, 5); + if (slotnum == 1 && template_encoding_table[template][1] == L) + { + slotnum = 2; + } + instr = slotN_contents (bundle, slotnum); memcpy(contents_cache, &instr, sizeof(instr)); replace_slotN_contents (bundle, BREAKPOINT, slotnum); @@ -587,10 +597,20 @@ ia64_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache) int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER; long long instr; int val; + int template; addr &= ~0x0f; val = target_read_memory (addr, bundle, BUNDLE_LEN); + + /* Check for L type instruction in 2nd slot, if present then + bump up the slot number to the 3rd slot */ + template = extract_bit_field (bundle, 0, 5); + if (slotnum == 1 && template_encoding_table[template][1] == L) + { + slotnum = 2; + } + memcpy (&instr, contents_cache, sizeof instr); replace_slotN_contents (bundle, instr, slotnum); if (val == 0) |