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added libtcc - fixed spill reg bugs

tcc-xref
bellard 2002-05-13 23:00:17 +00:00
parent 1e14c90c7a
commit 8f64c13c40
1 changed files with 176 additions and 77 deletions
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253
tcc.c
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@ -38,6 +38,8 @@
#include <dlfcn.h>
#endif
#include "libtcc.h"
//#define DEBUG
/* preprocessor debug */
//#define PP_DEBUG
@ -245,6 +247,10 @@ int gnu_ext = 1;
/* use Tiny C extensions */
int tcc_ext = 1;
struct TCCState {
int dummy;
};
/* The current value can be: */
#define VT_VALMASK 0x00ff
#define VT_CONST 0x00f0 /* constant in vc
@ -491,7 +497,7 @@ int decl_initializer_alloc(int t, AttributeDef *ad, int r, int has_init);
int gv(int rc);
void gv2(int rc1, int rc2);
void move_reg(int r, int s);
void save_regs(void);
void save_regs(int n);
void save_reg(int r);
void vpop(void);
void vswap(void);
@ -2450,7 +2456,7 @@ void save_reg(int r)
}
#endif
/* special long long case */
if ((p->t & VT_BTYPE) == VT_LLONG) {
if ((t & VT_BTYPE) == VT_LLONG) {
sv.c.ul += 4;
store(p->r2, &sv);
}
@ -2501,12 +2507,13 @@ int get_reg(int rc)
return r;
}
void save_regs(void)
/* save registers up to (vtop - n) stack entry */
void save_regs(int n)
{
int r;
SValue *p;
for(p=vstack;p<=vtop;p++) {
SValue *p, *p1;
p1 = vtop - n;
for(p = vstack;p <= p1; p++) {
r = p->r & VT_VALMASK;
if (r < VT_CONST) {
save_reg(r);
@ -3810,7 +3817,7 @@ void vstore(void)
gaddrof();
gfunc_param(&gf);
save_regs();
save_regs(0);
vpushi((int)&memcpy);
gfunc_call(&gf);
/* leave source on stack */
@ -4660,7 +4667,7 @@ void unary(void)
}
/* get return type */
s = sym_find((unsigned)vtop->t >> VT_STRUCT_SHIFT);
save_regs(); /* save used temporary registers */
save_regs(0); /* save used temporary registers */
gfunc_start(&gf, s->r);
next();
sa = s->next; /* first parameter */
@ -4879,6 +4886,8 @@ void expr_eq(void)
eor();
if (tok == '?') {
next();
save_regs(1); /* we need to save all registers here except
at the top because it is a branch point */
t = gtst(1, 0);
gexpr();
/* XXX: long long handling ? */
@ -5832,17 +5841,13 @@ void resolve_global_syms(void)
}
}
/* compile a C file. Return non zero if errors. */
int tcc_compile_file(const char *filename1)
/* compile the C file opened in 'file'. Return non zero if errors. */
int tcc_compile(TCCState *s)
{
Sym *define_start;
char buf[512];
funcname = "";
file = tcc_open(filename1);
if (!file)
error("file '%s' not found", filename1);
include_stack_ptr = include_stack;
ifdef_stack_ptr = ifdef_stack;
@ -5868,7 +5873,6 @@ int tcc_compile_file(const char *filename1)
decl(VT_CONST);
if (tok != -1)
expect("declaration");
tcc_close(file);
/* end of translation unit info */
if (do_debug) {
@ -5886,23 +5890,48 @@ int tcc_compile_file(const char *filename1)
return 0;
}
/* define a symbol. A value can also be provided with the '=' operator */
/* XXX: currently only handles integers and string defines. should use
tcc parser, but would need a custom 'FILE *' */
void define_symbol(const char *sym)
int tcc_compile_file(TCCState *s, const char *filename1)
{
int ret;
file = tcc_open(filename1);
if (!file)
error("file '%s' not found", filename1);
ret = tcc_compile(s);
tcc_close(file);
return ret;
}
int tcc_compile_string(TCCState *s, const char *str)
{
BufferedFile bf1, *bf = &bf1;
int ret;
/* init file structure */
bf->fd = -1;
bf->buf_ptr = (char *)str;
bf->buf_end = (char *)str + strlen(bf->buffer);
pstrcpy(bf->filename, sizeof(bf->filename), "<string>");
bf->line_num = 1;
file = bf;
ret = tcc_compile(s);
/* currently, no need to close */
return ret;
}
/* define a symbol. A value can also be provided with the '=' operator */
void tcc_define_symbol(TCCState *s, const char *sym, const char *value)
{
char *p;
BufferedFile bf1, *bf = &bf1;
pstrcpy(bf->buffer, IO_BUF_SIZE, sym);
p = strchr(bf->buffer, '=');
if (!p) {
/* default value */
pstrcat(bf->buffer, IO_BUF_SIZE, " 1");
} else {
*p = ' ';
}
pstrcat(bf->buffer, IO_BUF_SIZE, " ");
/* default value */
if (!value)
value = "1";
pstrcat(bf->buffer, IO_BUF_SIZE, value);
/* init file structure */
bf->fd = -1;
bf->buf_ptr = bf->buffer;
@ -5921,7 +5950,7 @@ void define_symbol(const char *sym)
file = NULL;
}
void undef_symbol(const char *sym)
void tcc_undefine_symbol(TCCState *s1, const char *sym)
{
TokenSym *ts;
Sym *s;
@ -5934,15 +5963,39 @@ void undef_symbol(const char *sym)
/* open a dynamic library so that its symbol are available for
compiled programs */
void open_dll(char *libname)
/* XXX: open the lib only to actually run the program */
int tcc_add_dll(TCCState *s, const char *library_name)
{
char buf[1024];
void *h;
snprintf(buf, sizeof(buf), "lib%s.so", libname);
h = dlopen(buf, RTLD_GLOBAL | RTLD_LAZY);
h = dlopen(library_name, RTLD_GLOBAL | RTLD_LAZY);
if (!h)
error((char *)dlerror());
return 0;
}
/* If the symbol already exists, then it is redefined */
int tcc_add_symbol(TCCState *s, const char *name, void *value)
{
TokenSym *ts;
Sym *ext_sym;
int v;
ts = tok_alloc(name, 0);
v = ts->tok;
ext_sym = sym_find1(&extern_stack, v);
if (ext_sym) {
if (ext_sym->r & VT_FORWARD) {
greloc_patch(ext_sym, (long)value);
} else {
/* redefine symbol */
ext_sym->c = (long)value;
}
} else {
ext_sym = sym_push1(&extern_stack, v, VT_INT, (long)value);
ext_sym->r = VT_CONST;
}
return 0;
}
static void *resolve_sym(const char *sym)
@ -6059,7 +6112,7 @@ static void put_stabd(int type, int other, int desc)
/* XXX: generate startup code */
/* XXX: better program header generation */
/* XXX: handle realloc'ed sections (instead of mmaping them) */
void build_exe(char *filename)
int tcc_output_file(TCCState *s, const char *filename, int file_type)
{
Elf32_Ehdr ehdr;
FILE *f;
@ -6188,6 +6241,7 @@ void build_exe(char *filename)
}
fwrite(shdr, 1, shnum * sizeof(Elf32_Shdr), f);
fclose(f);
return 0;
}
/* print the position in the source file of PC value 'pc' by reading
@ -6337,11 +6391,13 @@ static void sig_error(int signum, siginfo_t *siginf, void *puc)
#endif
/* launch the compiled program with the given arguments */
int launch_exe(int argc, char **argv)
int tcc_run(TCCState *s1, int argc, char **argv)
{
Sym *s;
int (*t)();
resolve_extern_syms();
s = sym_find1(&extern_stack, TOK_MAIN);
if (!s || (s->r & VT_FORWARD))
error("main() not defined");
@ -6382,10 +6438,71 @@ int launch_exe(int argc, char **argv)
return (*t)(argc, argv);
}
TCCState *tcc_new(void)
{
char *p, *r;
TCCState *s;
s = malloc(sizeof(TCCState));
if (!s)
return NULL;
/* default include paths */
nb_include_paths = 0;
tcc_add_include_path(s, "/usr/include");
tcc_add_include_path(s, "/usr/lib/tcc");
tcc_add_include_path(s, "/usr/local/lib/tcc");
/* add all tokens */
tok_ident = TOK_IDENT;
p = tcc_keywords;
while (*p) {
r = p;
while (*r++);
tok_alloc(p, r - p - 1);
p = r;
}
/* standard defines */
tcc_define_symbol(s, "__STDC__", NULL);
#ifdef __i386__
tcc_define_symbol(s, "__i386__", NULL);
#endif
/* tiny C specific defines */
tcc_define_symbol(s, "__TINYC__", NULL);
/* create standard sections */
text_section = new_section(".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
data_section = new_section(".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
/* XXX: should change type to SHT_NOBITS */
bss_section = new_section(".bss", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
return s;
}
void tcc_delete(TCCState *s)
{
free(s);
}
int tcc_add_include_path(TCCState *s, const char *pathname)
{
char *pathname1;
if (nb_include_paths >= INCLUDE_PATHS_MAX)
return -1;
pathname1 = strdup(pathname);
if (!pathname1)
return -1;
include_paths[nb_include_paths++] = pathname1;
return 0;
}
#if !defined(LIBTCC)
void help(void)
{
printf("tcc version 0.9.6 - Tiny C Compiler - Copyright (C) 2001, 2002 Fabrice Bellard\n"
printf("tcc version 0.9.7 - Tiny C Compiler - Copyright (C) 2001, 2002 Fabrice Bellard\n"
"usage: tcc [-Idir] [-Dsym[=val]] [-Usym] [-llib] [-g] [-b]\n"
" [-i infile] infile [infile_args...]\n"
"\n"
@ -6403,37 +6520,11 @@ void help(void)
int main(int argc, char **argv)
{
char *p, *r, *outfile;
char *r, *outfile;
int optind;
include_paths[0] = "/usr/include";
include_paths[1] = "/usr/lib/tcc";
include_paths[2] = "/usr/local/lib/tcc";
nb_include_paths = 3;
/* add all tokens */
tok_ident = TOK_IDENT;
p = tcc_keywords;
while (*p) {
r = p;
while (*r++);
tok_alloc(p, r - p - 1);
p = r;
}
/* standard defines */
define_symbol("__STDC__");
#ifdef __i386__
define_symbol("__i386__");
#endif
/* tiny C specific defines */
define_symbol("__TINYC__");
TCCState *s;
/* create standard sections */
text_section = new_section(".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
data_section = new_section(".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
/* XXX: should change type to SHT_NOBITS */
bss_section = new_section(".bss", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
s = tcc_new();
optind = 1;
outfile = NULL;
@ -6448,19 +6539,27 @@ int main(int argc, char **argv)
break;
optind++;
if (r[1] == 'I') {
if (nb_include_paths >= INCLUDE_PATHS_MAX)
if (tcc_add_include_path(s, r + 2) < 0)
error("too many include paths");
include_paths[nb_include_paths++] = r + 2;
} else if (r[1] == 'D') {
define_symbol(r + 2);
char *sym, *value;
sym = r + 2;
value = strchr(sym, '=');
if (value) {
*value = '\0';
value++;
}
tcc_define_symbol(s, sym, value);
} else if (r[1] == 'U') {
undef_symbol(r + 2);
tcc_undefine_symbol(s, r + 2);
} else if (r[1] == 'l') {
open_dll(r + 2);
char buf[1024];
snprintf(buf, sizeof(buf), "lib%s.so", r + 2);
tcc_add_dll(s, buf);
} else if (r[1] == 'i') {
if (optind >= argc)
goto show_help;
tcc_compile_file(argv[optind++]);
tcc_compile_file(s, argv[optind++]);
} else if (!strcmp(r + 1, "bench")) {
do_bench = 1;
#ifdef CONFIG_TCC_BCHECK
@ -6468,7 +6567,7 @@ int main(int argc, char **argv)
if (!do_bounds_check) {
do_bounds_check = 1;
/* define symbol */
define_symbol("__BOUNDS_CHECKING_ON");
tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
/* create bounds sections */
bounds_section = new_section(".bounds",
SHT_PROGBITS, SHF_ALLOC);
@ -6512,19 +6611,19 @@ int main(int argc, char **argv)
}
}
tcc_compile_file(argv[optind]);
tcc_compile_file(s, argv[optind]);
if (do_bench) {
printf("total: %d idents, %d lines, %d bytes\n",
tok_ident - TOK_IDENT, total_lines, total_bytes);
}
resolve_extern_syms();
if (outfile) {
build_exe(outfile);
tcc_output_file(s, outfile, TCC_FILE_EXE);
return 0;
} else {
return launch_exe(argc - optind, argv + optind);
return tcc_run(s, argc - optind, argv + optind);
}
}
#endif