diff options
Diffstat (limited to 'src/cmd/5l/obj.c')
| -rw-r--r-- | src/cmd/5l/obj.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/cmd/5l/obj.c b/src/cmd/5l/obj.c index 24e6294a84..47831e39c6 100644 --- a/src/cmd/5l/obj.c +++ b/src/cmd/5l/obj.c @@ -627,6 +627,38 @@ loop: pc++; goto loop; + case ANPTRS: + if(skip) + goto casedef; + if(cursym->nptrs != -1) { + diag("ldobj1: multiple pointer maps defined for %s", cursym->name); + errorexit(); + } + if(p->to.offset > cursym->args/PtrSize) { + diag("ldobj1: pointer map definition for %s exceeds its argument size", cursym->name); + errorexit(); + } + cursym->nptrs = p->to.offset; + if(cursym->nptrs != 0) + cursym->ptrs = mal((rnd(cursym->nptrs, 32) / 32) * sizeof(*cursym->ptrs)); + pc++; + goto loop; + + case APTRS: + if(skip) + goto casedef; + if(cursym->nptrs == -1 || cursym->ptrs == NULL) { + diag("ldobj1: pointer map data provided for %s without a definition", cursym->name); + errorexit(); + } + if(p->from.offset*32 >= rnd(cursym->nptrs, 32)) { + diag("ldobj1: excessive pointer map data provided for %s", cursym->name); + errorexit(); + } + cursym->ptrs[p->from.offset] = p->to.offset; + pc++; + goto loop; + case ATEXT: if(cursym != nil && cursym->text) { histtoauto(); @@ -670,6 +702,7 @@ loop: s->text = p; s->value = pc; s->args = p->to.offset2; + s->nptrs = -1; lastp = p; p->pc = pc; pc++; |