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loader fix

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static init redo

R=rsc
CC=golang-dev
https://golang.org/cl/2254041
This commit is contained in:
Ken Thompson 2010-09-20 14:23:25 -07:00
parent d4c8a54579
commit 103d756663
4 changed files with 98 additions and 55 deletions
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3
src/cmd/gc/go.h
View File

@ -1023,7 +1023,7 @@ void walkselect(Node *sel);
/*
* sinit.c
*/
void anylit(Node *n, Node *var, NodeList **init);
void anylit(int, Node *n, Node *var, NodeList **init);
int gen_as_init(Node *n);
NodeList* initfix(NodeList *l);
int oaslit(Node *n, NodeList **init);
@ -1116,7 +1116,6 @@ Type* shallow(Type *t);
int simsimtype(Type *t);
void smagic(Magic *m);
Type* sortinter(Type *t);
Node* staticname(Type *t);
uint32 stringhash(char *p);
Strlit* strlit(char *s);
int structcount(Type *t);

144
src/cmd/gc/sinit.c
View File

@ -179,20 +179,21 @@ initfix(NodeList *l)
* part of the composit literal.
*/
static void structlit(int pass, Node *n, Node *var, NodeList **init);
static void arraylit(int pass, Node *n, Node *var, NodeList **init);
static void slicelit(Node *n, Node *var, NodeList **init);
static void maplit(Node *n, Node *var, NodeList **init);
static void structlit(int ctxt, int pass, Node *n, Node *var, NodeList **init);
static void arraylit(int ctxt, int pass, Node *n, Node *var, NodeList **init);
static void slicelit(int ctxt, Node *n, Node *var, NodeList **init);
static void maplit(int ctxt, Node *n, Node *var, NodeList **init);
Node*
staticname(Type *t)
static Node*
staticname(Type *t, int ctxt)
{
Node *n;
snprint(namebuf, sizeof(namebuf), "statictmp_%.4d", statuniqgen);
statuniqgen++;
n = newname(lookup(namebuf));
n->readonly = 1;
if(!ctxt)
n->readonly = 1;
addvar(n, t, PEXTERN);
return n;
}
@ -270,7 +271,7 @@ getdyn(Node *n, int top)
}
static void
structlit(int pass, Node *n, Node *var, NodeList **init)
structlit(int ctxt, int pass, Node *n, Node *var, NodeList **init)
{
Node *r, *a;
NodeList *nl;
@ -286,21 +287,25 @@ structlit(int pass, Node *n, Node *var, NodeList **init)
switch(value->op) {
case OARRAYLIT:
if(value->type->bound < 0) {
if(pass == 2) {
if(pass == 1 && ctxt != 0) {
a = nod(ODOT, var, newname(index->sym));
slicelit(value, a, init);
slicelit(ctxt, value, a, init);
} else
if(pass == 2 && ctxt == 0) {
a = nod(ODOT, var, newname(index->sym));
slicelit(ctxt, value, a, init);
} else
if(pass == 3)
break;
continue;
}
a = nod(ODOT, var, newname(index->sym));
arraylit(pass, value, a, init);
arraylit(ctxt, pass, value, a, init);
continue;
case OSTRUCTLIT:
a = nod(ODOT, var, newname(index->sym));
structlit(pass, value, a, init);
structlit(ctxt, pass, value, a, init);
continue;
}
@ -326,7 +331,7 @@ structlit(int pass, Node *n, Node *var, NodeList **init)
}
static void
arraylit(int pass, Node *n, Node *var, NodeList **init)
arraylit(int ctxt, int pass, Node *n, Node *var, NodeList **init)
{
Node *r, *a;
NodeList *l;
@ -342,21 +347,25 @@ arraylit(int pass, Node *n, Node *var, NodeList **init)
switch(value->op) {
case OARRAYLIT:
if(value->type->bound < 0) {
if(pass == 2) {
if(pass == 1 && ctxt != 0) {
a = nod(OINDEX, var, index);
slicelit(value, a, init);
slicelit(ctxt, value, a, init);
} else
if(pass == 2 && ctxt == 0) {
a = nod(OINDEX, var, index);
slicelit(ctxt, value, a, init);
} else
if(pass == 3)
break;
continue;
}
a = nod(OINDEX, var, index);
arraylit(pass, value, a, init);
arraylit(ctxt, pass, value, a, init);
continue;
case OSTRUCTLIT:
a = nod(OINDEX, var, index);
structlit(pass, value, a, init);
structlit(ctxt, pass, value, a, init);
continue;
}
@ -382,7 +391,7 @@ arraylit(int pass, Node *n, Node *var, NodeList **init)
}
static void
slicelit(Node *n, Node *var, NodeList **init)
slicelit(int ctxt, Node *n, Node *var, NodeList **init)
{
Node *r, *a;
NodeList *l;
@ -398,6 +407,22 @@ slicelit(Node *n, Node *var, NodeList **init)
t->sym = nil;
dowidth(t);
if(ctxt != 0) {
// put everything into static array
vstat = staticname(t, ctxt);
arraylit(ctxt, 1, n, vstat, init);
arraylit(ctxt, 2, n, vstat, init);
// copy static to slice
a = nod(OSLICE, vstat, nod(OKEY, N, N));
a = nod(OAS, var, a);
typecheck(&a, Etop);
a->dodata = 2;
*init = list(*init, a);
return;
}
// recipe for var = []t{...}
// 1. make a static array
// var vstat [...]t
@ -422,8 +447,8 @@ slicelit(Node *n, Node *var, NodeList **init)
vstat = N;
mode = getdyn(n, 1);
if(mode & MODECONST) {
vstat = staticname(t);
arraylit(1, n, vstat, init);
vstat = staticname(t, ctxt);
arraylit(ctxt, 1, n, vstat, init);
}
// make new auto *array (3 declare)
@ -468,11 +493,11 @@ slicelit(Node *n, Node *var, NodeList **init)
case OARRAYLIT:
if(value->type->bound < 0)
break;
arraylit(2, value, a, init);
arraylit(ctxt, 2, value, a, init);
continue;
case OSTRUCTLIT:
structlit(2, value, a, init);
structlit(ctxt, 2, value, a, init);
continue;
}
@ -488,7 +513,7 @@ slicelit(Node *n, Node *var, NodeList **init)
}
static void
maplit(Node *n, Node *var, NodeList **init)
maplit(int ctxt, Node *n, Node *var, NodeList **init)
{
Node *r, *a;
NodeList *l;
@ -497,6 +522,8 @@ maplit(Node *n, Node *var, NodeList **init)
Node *vstat, *index, *value;
Sym *syma, *symb;
ctxt = 0;
// make the map var
nerr = nerrors;
@ -549,7 +576,7 @@ maplit(Node *n, Node *var, NodeList **init)
dowidth(t);
// make and initialize static array
vstat = staticname(t);
vstat = staticname(t, ctxt);
b = 0;
for(l=n->list; l; l=l->next) {
r = l->n;
@ -640,7 +667,7 @@ maplit(Node *n, Node *var, NodeList **init)
}
void
anylit(Node *n, Node *var, NodeList **init)
anylit(int ctxt, Node *n, Node *var, NodeList **init)
{
Type *t;
Node *a, *vstat;
@ -655,18 +682,24 @@ anylit(Node *n, Node *var, NodeList **init)
fatal("anylit: not struct");
if(simplename(var)) {
// lay out static data
vstat = staticname(t);
structlit(1, n, vstat, init);
// copy static to var
a = nod(OAS, var, vstat);
typecheck(&a, Etop);
walkexpr(&a, init);
*init = list(*init, a);
if(ctxt == 0) {
// lay out static data
vstat = staticname(t, ctxt);
structlit(1, 1, n, vstat, init);
// add expressions to automatic
structlit(2, n, var, init);
// copy static to var
a = nod(OAS, var, vstat);
typecheck(&a, Etop);
walkexpr(&a, init);
*init = list(*init, a);
// add expressions to automatic
structlit(ctxt, 2, n, var, init);
break;
}
structlit(ctxt, 1, n, var, init);
structlit(ctxt, 2, n, var, init);
break;
}
@ -677,30 +710,36 @@ anylit(Node *n, Node *var, NodeList **init)
walkexpr(&a, init);
*init = list(*init, a);
}
structlit(3, n, var, init);
structlit(ctxt, 3, n, var, init);
break;
case OARRAYLIT:
if(t->etype != TARRAY)
fatal("anylit: not array");
if(t->bound < 0) {
slicelit(n, var, init);
slicelit(ctxt, n, var, init);
break;
}
if(simplename(var)) {
// lay out static data
vstat = staticname(t);
arraylit(1, n, vstat, init);
// copy static to automatic
a = nod(OAS, var, vstat);
typecheck(&a, Etop);
walkexpr(&a, init);
*init = list(*init, a);
if(ctxt == 0) {
// lay out static data
vstat = staticname(t, ctxt);
arraylit(1, 1, n, vstat, init);
// add expressions to automatic
arraylit(2, n, var, init);
// copy static to automatic
a = nod(OAS, var, vstat);
typecheck(&a, Etop);
walkexpr(&a, init);
*init = list(*init, a);
// add expressions to automatic
arraylit(ctxt, 2, n, var, init);
break;
}
arraylit(ctxt, 1, n, var, init);
arraylit(ctxt, 2, n, var, init);
break;
}
@ -711,13 +750,13 @@ anylit(Node *n, Node *var, NodeList **init)
walkexpr(&a, init);
*init = list(*init, a);
}
arraylit(3, n, var, init);
arraylit(ctxt, 3, n, var, init);
break;
case OMAPLIT:
if(t->etype != TMAP)
fatal("anylit: not map");
maplit(n, var, init);
maplit(ctxt, n, var, init);
break;
}
}
@ -725,6 +764,8 @@ anylit(Node *n, Node *var, NodeList **init)
int
oaslit(Node *n, NodeList **init)
{
int ctxt;
if(n->left == N || n->right == N)
goto no;
if(n->left->type == T || n->right->type == T)
@ -737,6 +778,9 @@ oaslit(Node *n, NodeList **init)
// context is init() function.
// implies generated data executed
// exactly once and not subject to races.
ctxt = 0;
// if(n->dodata == 1)
// ctxt = 1;
switch(n->right->op) {
default:
@ -747,7 +791,7 @@ oaslit(Node *n, NodeList **init)
case OMAPLIT:
if(vmatch1(n->left, n->right))
goto no;
anylit(n->right, n->left, init);
anylit(ctxt, n->right, n->left, init);
break;
}
n->op = OEMPTY;

4
src/cmd/gc/walk.c
View File

@ -1159,7 +1159,7 @@ walkexpr(Node **np, NodeList **init)
case OMAPLIT:
case OSTRUCTLIT:
nvar = makenewvar(n->type, init, &nstar);
anylit(n->left, nstar, init);
anylit(0, n->left, nstar, init);
n = nvar;
goto ret;
}
@ -1341,7 +1341,7 @@ walkexpr(Node **np, NodeList **init)
case OSTRUCTLIT:
nvar = nod(OXXX, N, N);
tempname(nvar, n->type);
anylit(n, nvar, init);
anylit(0, n, nvar, init);
n = nvar;
goto ret;

2
src/cmd/ld/dwarf.c
View File

@ -1030,7 +1030,7 @@ dwarfaddmachoheaders(void)
// have to be page aligned in the file.
fakestart = abbrevo & ~0xfff;
ms = newMachoSeg("__DWARF", 3);
ms = newMachoSeg("__DWARF", 4);
ms->fileoffset = fakestart;
ms->filesize = abbrevo-fakestart + abbrevsize+linesize+framesize+infosize;