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the ld-supplied typestrings are now obsolete

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R=r
DELTA=167  (0 added, 167 deleted, 0 changed)
OCL=31304
CL=31316
This commit is contained in:
Russ Cox 2009-07-07 17:35:45 -07:00
parent 9809d73868
commit 7c534e1bd2
7 changed files with 0 additions and 167 deletions
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2
src/cmd/5l/l.h
View File

@ -498,8 +498,6 @@ int linuxstrtable(void);
* go.c
*/
void deadcode(void);
void definetypestrings(void);
void definetypesigs(void);
char* gotypefor(char *name);
void ldpkg(Biobuf *f, int64 len, char *filename);

2
src/cmd/5l/obj.c
View File

@ -279,8 +279,6 @@ main(int argc, char *argv[])
sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
objfile(a);
}
definetypestrings();
definetypesigs();
deadcode();
firstp = firstp->link;

2
src/cmd/6l/l.h
View File

@ -387,8 +387,6 @@ Prog* copyp(Prog*);
double cputime(void);
void datblk(int32, int32);
void deadcode(void);
void definetypestrings(void);
void definetypesigs(void);
void diag(char*, ...);
void dodata(void);
void doinit(void);

2
src/cmd/6l/obj.c
View File

@ -362,8 +362,6 @@ main(int argc, char *argv[])
sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
objfile(a);
}
definetypestrings();
definetypesigs();
deadcode();
firstp = firstp->link;

2
src/cmd/8l/l.h
View File

@ -391,8 +391,6 @@ void whatsys(void);
* go.c
*/
void deadcode(void);
void definetypestrings(void);
void definetypesigs(void);
char* gotypefor(char *name);
void ldpkg(Biobuf *f, int64 len, char *filename);

2
src/cmd/8l/obj.c
View File

@ -332,8 +332,6 @@ main(int argc, char *argv[])
sprint(a, "%s/pkg/%s_%s/runtime.a", goroot, goos, goarch);
objfile(a);
}
definetypestrings();
definetypesigs();
deadcode();
firstp = firstp->link;

155
src/cmd/ld/go.c
View File

@ -6,11 +6,8 @@
// accumulate all type information from .6 files.
// check for inconsistencies.
// define gotypestrings variable if needed.
// define gotypesigs variable if needed.
// TODO:
// include type info for non-exported types.
// generate debugging section in binary.
// once the dust settles, try to move some code to
// libmach, so that other linkers and ar can share.
@ -338,158 +335,6 @@ symcmp(const void *va, const void *vb)
return strcmp(a->name, b->name);
}
// if there is an undefined reference to gotypestrings,
// create it. c declaration is
// extern char gotypestrings[];
// ironically, gotypestrings is a c variable, because there
// is no way to forward declare a string in go.
void
definetypestrings(void)
{
int i, j, len, n, w;
char *p;
Import **all, *x;
Fmt f;
Prog *prog;
Sym *s;
if(debug['g'])
return;
if(debug['v'])
Bprint(&bso, "%5.2f definetypestrings\n", cputime());
s = lookup("gotypestrings", 0);
if(s->type == 0)
return;
if(s->type != SXREF) {
diag("gotypestrings already defined");
return;
}
s->type = SDATA;
// make a list of all the type exports
n = 0;
for(i=0; i<NIHASH; i++)
for(x=ihash[i]; x; x=x->hash)
if(strcmp(x->prefix, "type") == 0)
n++;
all = mal(n*sizeof all[0]);
j = 0;
for(i=0; i<NIHASH; i++)
for(x=ihash[i]; x; x=x->hash)
if(strcmp(x->prefix, "type") == 0)
all[j++] = x;
// sort them by name
qsort(all, n, sizeof all[0], importcmp);
// make a big go string containing all the types
fmtstrinit(&f);
fmtprint(&f, "xxxx"); // 4-byte length
for(i=0; i<n; i++) {
p = strchr(all[i]->def, '\n');
if(p)
len = p - all[i]->def;
else
len = strlen(all[i]->def);
fmtprint(&f, "%s %.*s\n", all[i]->name, utfnlen(all[i]->def, len), all[i]->def);
}
p = fmtstrflush(&f);
n = strlen(p);
s->value = n;
// go strings begin with 4-byte length.
// amd64 is little-endian.
len = n - 4;
p[0] = len;
p[1] = len >> 8;
p[2] = len >> 16;
p[3] = len >> 24;
// have data, need to create linker representation.
// linker stores big data as sequence of pieces
// with int8 length, so break p into 100-byte chunks.
// (had to add D_SBIG even to do that; the compiler
// would have generated 8-byte chunks.)
for(i=0; i<n; i+=100) {
w = 100;
if(w > n - i)
w = n - i;
prog = newdata(s, i, w, D_EXTERN);
prog->to.type = D_SBIG;
prog->to.sbig = p + i;
}
if(debug['v'])
Bprint(&bso, "%5.2f typestrings %d\n", cputime(), n);
}
// if there is an undefined reference to gotypesigs, create it.
// c declaration is
// extern Sigt *gotypesigs[];
// extern int ngotypesigs;
// used by sys.unreflect runtime.
void
definetypesigs(void)
{
int i, j, n;
Sym **all, *s, *x;
Prog *prog;
if(debug['g'])
return;
if(debug['v'])
Bprint(&bso, "%5.2f definetypesigs\n", cputime());
s = lookup("gotypesigs", 0);
if(s->type == 0)
return;
if(s->type != SXREF) {
diag("gotypesigs already defined");
return;
}
s->type = SDATA;
// make a list of all the sigt symbols.
n = 0;
for(i=0; i<NHASH; i++)
for(x = hash[i]; x; x=x->link)
if(memcmp(x->name, "sigt·", 6) == 0 && x->type != Sxxx)
n++;
all = mal(n*sizeof all[0]);
j = 0;
for(i=0; i<NHASH; i++)
for(x = hash[i]; x; x=x->link)
if(memcmp(x->name, "sigt·", 6) == 0 && x->type != Sxxx)
all[j++] = x;
// sort them by name
qsort(all, n, sizeof all[0], symcmp);
// emit array as sequence of references.
for(i=0; i<n; i++) {
prog = newdata(s, PtrSize*i, PtrSize, D_EXTERN);
prog->to.type = D_ADDR;
prog->to.index = D_EXTERN;
prog->to.sym = all[i];
}
s->value = PtrSize*n;
if(n == 0)
s->value = 1; // must have non-zero size or 6l complains
// emit count
s = lookup("ngotypesigs", 0);
s->type = SDATA;
s->value = sizeof(int32);
prog = newdata(s, 0, sizeof(int32), D_EXTERN);
prog->to.offset = n;
if(debug['v'])
Bprint(&bso, "%5.2f typesigs %d\n", cputime(), n);
}
static void mark(Sym*);
static int markdepth;