diff options
| author | Sigrid Solveig Haflínudóttir <sigrid@ftrv.se> | 2023-05-10 17:01:37 +0000 |
|---|---|---|
| committer | Sigrid Solveig Haflínudóttir <sigrid@ftrv.se> | 2023-05-10 17:01:37 +0000 |
| commit | 9702f740ab5532e392fc9c1fd83000d206af4dc5 (patch) | |
| tree | 5c43e6c44351ed73b84f2aeec4ad128402b8c287 /sys/src/cmd/7l/asmout.c | |
| parent | 91ae69be3306c807ae5bfa7d1b7ced8c239f9214 (diff) | |
7c, 7l: revert CASE change, fix linker clobbering offset if given the same register twice
Diffstat (limited to 'sys/src/cmd/7l/asmout.c')
| -rw-r--r-- | sys/src/cmd/7l/asmout.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/sys/src/cmd/7l/asmout.c b/sys/src/cmd/7l/asmout.c index 2c4a98bd5..cc55729a4 100644 --- a/sys/src/cmd/7l/asmout.c +++ b/sys/src/cmd/7l/asmout.c @@ -817,11 +817,9 @@ asmout(Prog *p, Optab *o) o1 = ADR(0, d, p->to.reg); break; - case 62: /* case Rv, Rt -> adr tab, Rt; movw Rt[R<<2], Rl; add Rt, Rl; br (Rl) */ - if(p->from.reg == p->to.reg) - diag("invalid SWITCH\n%P", p); - o1 = ADR(0, 4*4, p->to.reg); /* adr 4(pc), Rt */ - o2 = (2<<30)|(7<<27)|(2<<22)|(1<<21)|(3<<13)|(1<<12)|(2<<10)|(p->from.reg<<16)|(p->to.reg<<5)|REGTMP; /* movw Rt[Rv<<2], REGTMP */ + case 62: /* case Rv, Rt -> adr tab, Rl; movw Rl[R<<2], Rt; add Rt, Rl; br (Rl) */ + o1 = ADR(0, 4*4, REGTMP); /* adr 4(pc), REGTMP */ + o2 = (2<<30)|(7<<27)|(2<<22)|(1<<21)|(3<<13)|(1<<12)|(2<<10)|(p->from.reg<<16)|(REGTMP<<5)|p->to.reg; /* movw REGTMP[Rv<<2], Rt */ o3 = oprrr(AADD) | (p->to.reg<<16) | (REGTMP<<5) | REGTMP; /* add Rt, REGTMP */ o4 = (0x6b<<25)|(0x1F<<16)|(REGTMP<<5); /* br (REGTMP) */ lastcase = p; |