ref: c116550e6a41572796e4db65e4f6acbcb3d9d6f8
dir: /libinterp/loader.c/
#include "lib9.h"
#include "isa.h"
#include "interp.h"
#include "runt.h"
#include "loadermod.h"
#include "raise.h"
#include <kernel.h>
static uchar Instmap[] = Loader_Inst_map;
static Type* Tinst;
static uchar Tdescmap[] = Loader_Typedesc_map;
static Type* Tdesc;
static uchar Tlinkmap[] = Loader_Link_map;
static Type* Tlink;
void
loadermodinit(void)
{
sysinit();
builtinmod("$Loader", Loadermodtab, Loadermodlen);
Tinst = dtype(freeheap, sizeof(Loader_Inst), Instmap, sizeof(Instmap));
Tdesc = dtype(freeheap, sizeof(Loader_Typedesc), Tdescmap, sizeof(Tdescmap));
Tlink = dtype(freeheap, sizeof(Loader_Link), Tlinkmap, sizeof(Tlinkmap));
}
static void
brunpatch(Loader_Inst *ip, Module *m)
{
switch(ip->op) {
case ICALL:
case IJMP:
case IBEQW:
case IBNEW:
case IBLTW:
case IBLEW:
case IBGTW:
case IBGEW:
case IBEQB:
case IBNEB:
case IBLTB:
case IBLEB:
case IBGTB:
case IBGEB:
case IBEQF:
case IBNEF:
case IBLTF:
case IBLEF:
case IBGTF:
case IBGEF:
case IBEQC:
case IBNEC:
case IBLTC:
case IBLEC:
case IBGTC:
case IBGEC:
case IBEQL:
case IBNEL:
case IBLTL:
case IBLEL:
case IBGTL:
case IBGEL:
case ISPAWN:
ip->dst = (Inst*)ip->dst - m->prog;
break;
}
}
void
Loader_ifetch(void *a)
{
Heap *h;
Array *ar;
Module *m;
Inst *i, *ie;
Loader_Inst *li;
F_Loader_ifetch *f;
f = a;
destroy(*f->ret);
*f->ret = H;
if(f->mp == H)
return;
m = f->mp->m;
if(m == H)
return;
if(m->compiled) {
kwerrstr("compiled module");
return;
}
h = nheap(sizeof(Array)+m->nprog*sizeof(Loader_Inst));
h->t = &Tarray;
h->t->ref++;
ar = H2D(Array*, h);
ar->t = Tinst;
Tinst->ref++;
ar->len = m->nprog;
ar->root = H;
ar->data = (uchar*)ar+sizeof(Array);
li = (Loader_Inst*)ar->data;
i = m->prog;
ie = i + m->nprog;
while(i < ie) {
li->op = i->op;
li->addr = i->add;
li->src = i->s.imm;
li->dst = i->d.imm;
li->mid = i->reg;
if(UDST(i->add) == AIMM)
brunpatch(li, m);
li++;
i++;
}
*f->ret = ar;
}
void
Loader_link(void *a)
{
Link *p;
Heap *h;
Type **t;
int nlink;
Module *m;
Array *ar;
Loader_Link *ll;
F_Loader_link *f;
f = a;
destroy(*f->ret);
*f->ret = H;
if(f->mp == H)
return;
m = f->mp->m;
if(m == H)
return;
nlink = 0;
for(p = m->ext; p->name; p++)
nlink++;
h = nheap(sizeof(Array)+nlink*sizeof(Loader_Link));
h->t = &Tarray;
h->t->ref++;
ar = H2D(Array*, h);
ar->t = Tlink;
Tlink->ref++;
ar->len = nlink;
ar->root = H;
ar->data = (uchar*)ar+sizeof(Array);
ll = (Loader_Link*)ar->data + nlink;
for(p = m->ext; p->name; p++) {
ll--;
ll->name = c2string(p->name, strlen(p->name));
ll->sig = p->sig;
if(m->prog == nil) {
ll->pc = -1;
ll->tdesc = -1;
} else {
ll->pc = p->u.pc - m->prog;
ll->tdesc = 0;
for(t = m->type; *t != p->frame; t++)
ll->tdesc++;
}
}
*f->ret = ar;
}
void
Loader_tdesc(void *a)
{
int i;
Heap *h;
Type *t;
Array *ar;
Module *m;
F_Loader_tdesc *f;
Loader_Typedesc *lt;
f = a;
destroy(*f->ret);
*f->ret = H;
if(f->mp == H)
return;
m = f->mp->m;
if(m == H)
return;
h = nheap(sizeof(Array)+m->ntype*sizeof(Loader_Typedesc));
h->t = &Tarray;
h->t->ref++;
ar = H2D(Array*, h);
ar->t = Tdesc;
Tdesc->ref++;
ar->len = m->ntype;
ar->root = H;
ar->data = (uchar*)ar+sizeof(Array);
lt = (Loader_Typedesc*)ar->data;
for(i = 0; i < m->ntype; i++) {
t = m->type[i];
lt->size = t->size;
lt->map = H;
if(t->np != 0)
lt->map = mem2array(t->map, t->np);
lt++;
}
*f->ret = ar;
}
void
Loader_newmod(void *a)
{
Heap *h;
Module *m;
Array *ia;
Modlink *ml;
Inst *i, *ie;
Loader_Inst *li;
F_Loader_newmod *f;
f = a;
destroy(*f->ret);
*f->ret = H;
if(f->inst == H || f->data == H) {
kwerrstr("nil parameters");
return;
}
if(f->nlink < 0) {
kwerrstr("bad nlink");
return;
}
m = malloc(sizeof(Module));
if(m == nil) {
kwerrstr(exNomem);
return;
}
m->origmp = H;
m->ref = 1;
m->ss = f->ss;
m->name = strdup(string2c(f->name));
m->path = strdup(m->name);
m->ntype = 1;
m->type = malloc(sizeof(Type*));
if(m->name == nil || m->path == nil || m->type == nil) {
kwerrstr(exNomem);
goto bad;
}
m->origmp = (uchar*)f->data;
h = D2H(f->data);
h->ref++;
Setmark(h);
m->type[0] = h->t;
h->t->ref++;
ia = f->inst;
m->nprog = ia->len;
m->prog = malloc(m->nprog*sizeof(Inst));
if(m->prog == nil)
goto bad;
i = m->prog;
ie = i + m->nprog;
li = (Loader_Inst*)ia->data;
while(i < ie) {
i->op = li->op;
i->add = li->addr;
i->reg = li->mid;
i->s.imm = li->src;
i->d.imm = li->dst;
if(brpatch(i, m) == 0) {
kwerrstr("bad branch addr");
goto bad;
}
i++;
li++;
}
m->entryt = nil;
m->entry = m->prog;
ml = mklinkmod(m, f->nlink);
ml->MP = m->origmp;
m->origmp = H;
m->pctab = nil;
*f->ret = ml;
return;
bad:
destroy(m->origmp);
freemod(m);
}
void
Loader_tnew(void *a)
{
int mem;
Module *m;
Type *t, **nt;
Array *ar, az;
F_Loader_tnew *f;
f = a;
*f->ret = -1;
if(f->mp == H)
return;
m = f->mp->m;
if(m == H)
return;
if(m->origmp != H){
kwerrstr("need newmod");
return;
}
ar = f->map;
if(ar == H) {
ar = &az;
ar->len = 0;
ar->data = nil;
}
t = dtype(freeheap, f->size, ar->data, ar->len);
if(t == nil)
return;
mem = (m->ntype+1)*sizeof(Type*);
if(msize(m->type) > mem) {
*f->ret = m->ntype;
m->type[m->ntype++] = t;
return;
}
nt = realloc(m->type, mem);
if(nt == nil) {
kwerrstr(exNomem);
return;
}
m->type = nt;
f->mp->type = nt;
*f->ret = m->ntype;
m->type[m->ntype++] = t;
}
void
Loader_ext(void *a)
{
Modl *l;
Module *m;
Modlink *ml;
F_Loader_ext *f;
f = a;
*f->ret = -1;
if(f->mp == H) {
kwerrstr("nil mp");
return;
}
ml = f->mp;
m = ml->m;
if(f->tdesc < 0 || f->tdesc >= m->ntype) {
kwerrstr("bad tdesc");
return;
}
if(f->pc < 0 || f->pc >= m->nprog) {
kwerrstr("bad pc");
return;
}
if(f->idx < 0 || f->idx >= ml->nlinks) {
kwerrstr("bad idx");
return;
}
l = &ml->links[f->idx];
l->u.pc = m->prog + f->pc;
l->frame = m->type[f->tdesc];
*f->ret = 0;
}
void
Loader_dnew(void *a)
{
F_Loader_dnew *f;
Heap *h;
Array *ar, az;
Type *t;
f = a;
*f->ret = H;
if(f->map == H)
return;
ar = f->map;
if(ar == H) {
ar = &az;
ar->len = 0;
ar->data = nil;
}
t = dtype(freeheap, f->size, ar->data, ar->len);
if(t == nil) {
kwerrstr(exNomem);
return;
}
h=heapz(t);
if(h == nil) {
freetype(t);
kwerrstr(exNomem);
return;
}
*f->ret=H2D(Loader_Niladt*, h);
}
void
Loader_compile(void *a)
{
Module *m;
F_Loader_compile *f;
f = a;
*f->ret = -1;
if(f->mp == H) {
kwerrstr("nil mp");
return;
}
m = f->mp->m;
if(m->compiled) {
kwerrstr("compiled module");
return;
}
*f->ret = 0;
m->origmp = f->mp->MP;
if(cflag || f->flag)
if(compile(m, m->nprog, f->mp)) {
f->mp->prog = m->prog;
f->mp->compiled = 1;
} else
*f->ret = -1;
m->origmp = H;
}