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tcc_enter/exit_state(): do not use!
tcc_enter/exit_state() are meant exclusively to protect the tcc_compile() and its sub-functions in tccpp.c, tccgen.c, tccasm.c and xxx-gen.c. Other files that are part of libtcc simply must not use global variables. - riscv64/last_hi: move to TCCState from72250bece2- tccrun.c: Using a fixed address would not work anyway ("tcc -run tcc.c -run ..." for example) frombaacb0f52a- tests/Makefile: support for a platform doesn't make sense if it doesn't pass our basic tests. from591feda103Also: - tccgen: cleanup "duplicate member" (only 2 passes, avoids additional TokenSym field) from170be79a42
This commit is contained in:
grischka
parent
a06fef3b11
commit
8ff705554d
@ -155,11 +155,6 @@ ST_FUNC void relocate_plt(TCCState *s1)
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}
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}
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struct pcrel_hi {
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addr_t addr, val;
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};
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static struct pcrel_hi last_hi;
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void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr,
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addr_t addr, addr_t val)
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{
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9
tcc.h
9
tcc.h
@ -45,9 +45,6 @@
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/* XXX: need to define this to use them in non ISOC99 context */
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extern float strtof (const char *__nptr, char **__endptr);
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extern long double strtold (const char *__nptr, char **__endptr);
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# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
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extern char **environ;
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# endif
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#endif
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#ifdef _WIN32
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@ -436,7 +433,6 @@ typedef struct TokenSym {
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struct Sym *sym_struct; /* direct pointer to structure */
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struct Sym *sym_identifier; /* direct pointer to identifier */
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int tok; /* token number */
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int cnt;
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int len;
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char str[1];
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} TokenSym;
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@ -886,6 +882,11 @@ struct TCCState {
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ElfW_Rel *qrel;
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# define qrel s1->qrel
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#ifdef TCC_TARGET_RISCV64
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struct pcrel_hi { addr_t addr, val; } last_hi;
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# define last_hi s1->last_hi
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#endif
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#ifdef TCC_TARGET_PE
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/* PE info */
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int pe_subsystem;
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5
tccelf.c
5
tccelf.c
@ -2137,9 +2137,6 @@ static int final_sections_reloc(TCCState *s1)
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if (s1->nb_errors != 0)
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return -1;
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/* Some targets use static data between relocations (riscv64) */
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tcc_enter_state (s1);
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/* relocate sections */
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/* XXX: ignore sections with allocated relocations ? */
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for(i = 1; i < s1->nb_sections; i++) {
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@ -2148,8 +2145,6 @@ static int final_sections_reloc(TCCState *s1)
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relocate_section(s1, s);
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}
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tcc_exit_state();
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/* relocate relocation entries if the relocation tables are
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allocated in the executable */
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for(i = 1; i < s1->nb_sections; i++) {
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40
tccgen.c
40
tccgen.c
@ -4321,38 +4321,19 @@ static Sym * find_field (CType *type, int v, int *cumofs)
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return s;
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}
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/*
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* c = 0: reset symbol counter
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* c = 1: increment symbol counter
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* c = 2: check symbol counter
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*/
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static void check_fields (CType *type, int c)
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static void check_fields (CType *type, int check)
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{
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Sym *s = type->ref;
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int v;
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while ((s = s->next) != NULL) {
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if ((s->v & SYM_FIELD) &&
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(s->type.t & VT_BTYPE) == VT_STRUCT &&
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(s->v & ~SYM_FIELD) >= SYM_FIRST_ANOM) {
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check_fields (&s->type, c);
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}
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v = s->v & ~SYM_FIELD;
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if (v < tok_ident)
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switch (c) {
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case 0:
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table_ident[v - TOK_IDENT]->cnt = 0;
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break;
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case 1:
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table_ident[v - TOK_IDENT]->cnt++;
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break;
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case 2:
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if (table_ident[v - TOK_IDENT]->cnt != 1)
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tcc_error("duplicate member '%s'",
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get_tok_str(v, NULL));
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break;
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}
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int v = s->v & ~SYM_FIELD;
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if (v < SYM_FIRST_ANOM) {
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TokenSym *ts = table_ident[v - TOK_IDENT];
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if (check && (ts->tok & SYM_FIELD))
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tcc_error("duplicate member '%s'", get_tok_str(v, NULL));
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ts->tok ^= SYM_FIELD;
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} else if ((s->type.t & VT_BTYPE) == VT_STRUCT)
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check_fields (&s->type, check);
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}
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}
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@ -4809,9 +4790,8 @@ do_decl:
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if (ad.cleanup_func) {
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tcc_warning("attribute '__cleanup__' ignored on type");
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}
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check_fields(type, 0);
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check_fields(type, 1);
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check_fields(type, 2);
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check_fields(type, 0);
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struct_layout(type, &ad);
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}
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}
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35
tccrun.c
35
tccrun.c
@ -63,6 +63,10 @@ static void *win64_add_function_table(TCCState *s1);
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static void win64_del_function_table(void *);
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#endif
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#ifndef PAGESIZE
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# define PAGESIZE 4096
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#endif
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/* ------------------------------------------------------------- */
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/* Do all relocations (needed before using tcc_get_symbol())
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Returns -1 on error. */
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@ -87,19 +91,18 @@ LIBTCCAPI int tcc_relocate(TCCState *s1, void *ptr)
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int fd = mkstemp(tmpfname);
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unlink(tmpfname);
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ftruncate(fd, size);
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#ifdef __OpenBSD__
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{ /* OpenBSD uses random 64 addresses that are far apart. This does not
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work for the x86_64 target.
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This might be a problem in the future for other targets. */
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static char *prw = (char *) 0x100000000;
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char *pex = prw + 0x40000000;
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ptr = mmap (prw, size, PROT_READ|PROT_WRITE, MAP_SHARED | MAP_FIXED, fd, 0);
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prx = mmap (pex, size, PROT_READ|PROT_EXEC, MAP_SHARED | MAP_FIXED, fd, 0);
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tcc_enter_state (s1);
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prw += 0x100000000;
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tcc_exit_state();
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{
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int offs;
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size = (size + (PAGESIZE-1)) & ~(PAGESIZE-1);
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offs = (size + (0x100000-1)) & ~(0x100000-1);
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prx = NULL;
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ptr = mmap(NULL, size + offs, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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if (ptr != MAP_FAILED) {
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/* mmap RX memory at a fixed distance */
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munmap((char*)ptr + size, offs);
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prx = mmap((char*)ptr + offs, size, PROT_READ|PROT_EXEC, MAP_SHARED|MAP_FIXED, fd, 0);
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}
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}
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#else
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ptr = mmap (NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
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@ -111,6 +114,7 @@ LIBTCCAPI int tcc_relocate(TCCState *s1, void *ptr)
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dynarray_add(&s1->runtime_mem, &s1->nb_runtime_mem, prx);
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ptr_diff = (char*)prx - (char*)ptr;
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close(fd);
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//printf("map %p %p %p\n", ptr, prx, (void*)ptr_diff);
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}
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#else
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ptr = tcc_malloc(size);
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@ -155,8 +159,12 @@ LIBTCCAPI int tcc_run(TCCState *s1, int argc, char **argv)
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#ifdef CONFIG_TCC_BACKTRACE
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rt_context *rc = &g_rtctxt;
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#endif
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#if defined(__APPLE__) || defined(__FreeBSD__)
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char **envp = NULL;
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#elif defined(__OpenBSD__)
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extern char **environ;
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char **envp = environ;
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#else
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char **envp = environ;
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#endif
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@ -333,9 +341,6 @@ static void set_pages_executable(TCCState *s1, void *ptr, unsigned long length)
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void __clear_cache(void *beginning, void *end);
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# ifndef HAVE_SELINUX
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addr_t start, end;
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# ifndef PAGESIZE
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# define PAGESIZE 4096
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# endif
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start = (addr_t)ptr & ~(PAGESIZE - 1);
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end = (addr_t)ptr + length;
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end = (end + PAGESIZE - 1) & ~(PAGESIZE - 1);
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@ -57,9 +57,6 @@ endif
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ifeq (,$(filter i386 x86_64,$(ARCH)))
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TESTS := $(filter-out dlltest asm-c-connect-test,$(TESTS))
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endif
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ifeq ($(TARGETOS),OpenBSD)
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TESTS := $(filter-out libtest_mt test3 dlltest asm-c-connect-test pp-dir btest test1b,$(TESTS))
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endif
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ifeq ($(OS),Windows_NT) # for libtcc_test to find libtcc.dll
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PATH := $(CURDIR)/$(TOP)$(if $(findstring ;,$(PATH)),;,:)$(PATH)
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