diff options
Diffstat (limited to 'gdb/ns32k-tdep.c')
| -rw-r--r-- | gdb/ns32k-tdep.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/gdb/ns32k-tdep.c b/gdb/ns32k-tdep.c index 3edb7f5..775e8af 100644 --- a/gdb/ns32k-tdep.c +++ b/gdb/ns32k-tdep.c @@ -26,6 +26,46 @@ _initialize_ns32k_tdep () tm_print_insn = print_insn_ns32k; } +/* Advance PC across any function entry prologue instructions + to reach some "real" code. */ + +CORE_ADDR +merlin_skip_prologue (pc) + CORE_ADDR pc; +{ + register int op = read_memory_integer (pc, 1); + if (op == 0x82) + { + op = read_memory_integer (pc+2,1); + if ((op & 0x80) == 0) + pc += 3; + else if ((op & 0xc0) == 0x80) + pc += 4; + else pc += 6; + } + return pc; +} + +CORE_ADDR +umax_skip_prologue (pc) + CORE_ADDR pc; +{ + register unsigned char op = read_memory_integer (pc, 1); + if (op == 0x82) + { + op = read_memory_integer (pc+2,1); + if ((op & 0x80) == 0) + pc += 3; + else if ((op & 0xc0) == 0x80) + pc += 4; + else + pc += 6; + } + return pc; +} + + + sign_extend (value, bits) { value = value & ((1 << bits) - 1); |