qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-25 01:27:56 -07:00
Code Releases Activity

arm bug address of a string

Browse Source 
R=r
CC=golang-dev
https://golang.org/cl/4004042
This commit is contained in:
Ken Thompson 2011-01-17 13:27:05 -08:00
parent 3965519ae5
commit 3537b79329
2 changed files with 26 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/cmd/5g/peep.c
View File

@ -336,6 +336,7 @@ subprop(Reg *r0)
case ACMN:
case AADD:
case ASUB:
case ASBC:
case ARSB:
case ASLL:
case ASRL:
@ -621,8 +622,8 @@ shiftprop(Reg *r)
case AADC:
case AORR:
case ASUB:
case ARSB:
case ASBC:
case ARSB:
case ARSC:
if(p1->reg == n || (p1->reg == NREG && p1->to.type == D_REG && p1->to.reg == n)) {
if(p1->from.type != D_REG)
@ -1006,6 +1007,7 @@ copyu(Prog *p, Adr *v, Adr *s)
case AADD: /* read, read, write */
case ASUB:
case ASBC:
case ARSB:
case ASLL:
case ASRL:

34
src/cmd/5g/reg.c
View File

@ -253,8 +253,7 @@ regopt(Prog *firstp)
* funny
*/
case ABL:
for(z=0; z<BITS; z++)
addrs.b[z] |= bit.b[z];
setaddrs(bit);
break;
}
@ -272,6 +271,18 @@ regopt(Prog *firstp)
if(firstr == R)
return;
for(i=0; i<nvar; i++) {
Var *v = var+i;
if(v->addr) {
bit = blsh(i);
for(z=0; z<BITS; z++)
addrs.b[z] |= bit.b[z];
}
// print("bit=%2d addr=%d et=%-6E w=%-2d s=%S + %lld\n",
// i, v->addr, v->etype, v->width, v->sym, v->offset);
}
/*
* pass 2
* turn branch references to pointers
@ -637,6 +648,10 @@ mkvar(Reg *r, Adr *a, int docon)
t = a->type;
n = D_NONE;
flag = 0;
// if(a->pun)
// flag = 1;
switch(t) {
default:
print("type %d %d %D\n", t, a->name, a);
@ -647,15 +662,19 @@ mkvar(Reg *r, Adr *a, int docon)
case D_BRANCH:
break;
case D_CONST:
flag = 1;
goto onereg;
case D_REGREG:
if(a->offset != NREG)
r->regu |= RtoB(a->offset);
// fallthrough
goto onereg;
case D_CONST:
case D_REG:
case D_SHIFT:
case D_OREG:
onereg:
if(a->reg != NREG)
r->regu |= RtoB(a->reg);
break;
@ -678,10 +697,6 @@ mkvar(Reg *r, Adr *a, int docon)
break;
}
flag = 0;
// if(a->pun)
// flag = 1;
s = a->sym;
if(s == S)
goto none;
@ -736,7 +751,6 @@ mkvar(Reg *r, Adr *a, int docon)
if(debug['R'])
print("bit=%2d et=%E pun=%d %D\n", i, et, flag, a);
out:
bit = blsh(i);
if(n == D_EXTERN || n == D_STATIC)
for(z=0; z<BITS; z++)
@ -744,8 +758,6 @@ out:
if(n == D_PARAM)
for(z=0; z<BITS; z++)
params.b[z] |= bit.b[z];
if(t == D_CONST)
setaddrs(bit);
return bit;