diff options
Diffstat (limited to 'src/cmd/5g/gsubr.c')
| -rw-r--r-- | src/cmd/5g/gsubr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/cmd/5g/gsubr.c b/src/cmd/5g/gsubr.c index caaa3e246..2d9218461 100644 --- a/src/cmd/5g/gsubr.c +++ b/src/cmd/5g/gsubr.c @@ -102,6 +102,19 @@ patch(Prog *p, Prog *to) p->to.offset = to->loc; } +Prog* +unpatch(Prog *p) +{ + Prog *q; + + if(p->to.type != D_BRANCH) + fatal("unpatch: not a branch"); + q = p->to.branch; + p->to.branch = P; + p->to.offset = 0; + return q; +} + /* * start a new Prog list. */ |