diff options
| -rw-r--r-- | gdb/m88k-tdep.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gdb/m88k-tdep.c b/gdb/m88k-tdep.c index 65e39f6..ff15ff8 100644 --- a/gdb/m88k-tdep.c +++ b/gdb/m88k-tdep.c @@ -251,6 +251,32 @@ examine_prologue (ip, limit, frame_sp, fsr, fi) bzero (must_adjust, sizeof (must_adjust)); next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn1, &insn2); + /* Accept move of incoming registers to other registers, using + "or rd,rs,0" or "or.u rd,rs,0" or "or rd,r0,rs" or "or rd,rs,r0". + We don't have to worry about walking into the first lines of code, + since the first line number will stop us (assuming we have symbols). + What we have actually seen is "or r10,r0,r12". */ + +#define OR_MOVE_INSN 0x58000000 /* or/or.u with immed of 0 */ +#define OR_MOVE_MASK 0xF800FFFF +#define OR_REG_MOVE1_INSN 0xF4005800 /* or rd,r0,rs */ +#define OR_REG_MOVE1_MASK 0xFC1FFFE0 +#define OR_REG_MOVE2_INSN 0xF4005800 /* or rd,rs,r0 */ +#define OR_REG_MOVE2_MASK 0xFC00FFFF + while (next_ip && + ((insn1 & OR_MOVE_MASK) == OR_MOVE_INSN || + (insn1 & OR_REG_MOVE1_MASK) == OR_REG_MOVE1_INSN || + (insn1 & OR_REG_MOVE2_MASK) == OR_REG_MOVE2_INSN + ) + ) + { + /* We don't care what moves to where. The result of the moves + has already been reflected in what the compiler tells us is the + location of these parameters. */ + ip = next_ip; + next_ip = NEXT_PROLOGUE_INSN (ip, limit, &insn1, &insn2); + } + /* Accept an optional "subu sp,sp,n" to set up the stack pointer. */ #define SUBU_SP_INSN 0x67ff0000 |