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binutils-gdb
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Handle moves ahead of the stack pointer slide, for struct returning fns.

This commit is contained in:
John Gilmore 1991-11-14 22:15:41 +00:00
parent faa0da67ef
commit 653d6c56a1
1 changed files with 26 additions and 0 deletions
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26
gdb/m88k-tdep.c
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@ -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