diff options
Diffstat (limited to 'src/cmd/5l/noop.c')
| -rw-r--r-- | src/cmd/5l/noop.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/src/cmd/5l/noop.c b/src/cmd/5l/noop.c index fb70599b51..305ed684ee 100644 --- a/src/cmd/5l/noop.c +++ b/src/cmd/5l/noop.c @@ -472,14 +472,27 @@ noops(void) p->to.reg = REGSP; p->spadj = -8; - /* SUB $8,SP */ - q1->as = ASUB; - q1->from.type = D_CONST; - q1->from.offset = 8; - q1->from.reg = NREG; + /* Keep saved LR at 0(SP) after SP change. */ + /* MOVW 0(SP), REGTMP; MOVW REGTMP, -8!(SP) */ + /* TODO: Remove SP adjustments; see issue 6699. */ + q1->as = AMOVW; + q1->from.type = D_OREG; + q1->from.reg = REGSP; + q1->from.offset = 0; q1->reg = NREG; q1->to.type = D_REG; + q1->to.reg = REGTMP; + + /* SUB $8,SP */ + q1 = appendp(q1); + q1->as = AMOVW; + q1->from.type = D_REG; + q1->from.reg = REGTMP; + q1->reg = NREG; + q1->to.type = D_OREG; q1->to.reg = REGSP; + q1->to.offset = -8; + q1->scond |= C_WBIT; q1->spadj = 8; break; |