| author | Rich Felker <dalias@aerifal.cx> | 2011年02月24日 16:37:21 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011年02月24日 16:37:21 -0500 |
| commit | 41d518360fd2da0f19d6a2f8d8c5f226b201c1e9 (patch) | |
| tree | 5c977c65efcc6c6ce159e0a5fbcdd566b0ddf061 | |
| parent | 73d310e1d2b76cd14b9913bbc3d8e75be91be5a6 (diff) | |
| download | musl-41d518360fd2da0f19d6a2f8d8c5f226b201c1e9.tar.gz | |
| -rw-r--r-- | Makefile | 6 | ||||
| -rw-r--r-- | src/internal/libc.c | 2 | ||||
| -rw-r--r-- | src/internal/libc.h | 16 | ||||
| -rw-r--r-- | src/ldso/start.c | 8 |
@@ -21,16 +21,16 @@ LOBJS = $(OBJS:.o=.lo) GENH = include/bits/alltypes.h CFLAGS = -Os -nostdinc -ffreestanding -std=c99 -D_XOPEN_SOURCE=700 -pipe -LDFLAGS = -nostdlib -shared -Wl,-Bsymbolic +LDFLAGS = -nostdlib -shared -fPIC -Wl,-e,_start -Wl,-Bsymbolic-functions INC = -I./include -I./src/internal -I./arch/$(ARCH) -PIC = -fPIC +PIC = -fPIC -O3 AR = $(CROSS_COMPILE)ar RANLIB = $(CROSS_COMPILE)ranlib OBJCOPY = $(CROSS_COMPILE)objcopy ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH)) -EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv +EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a) CRT_LIBS = lib/crt1.o lib/crti.o lib/crtn.o LIBC_LIBS = lib/libc.a diff --git a/src/internal/libc.c b/src/internal/libc.c index 954efedf..5f12e295 100644 --- a/src/internal/libc.c +++ b/src/internal/libc.c @@ -1,6 +1,6 @@ #include "libc.h" -#ifdef __PIC__ +#ifdef USE_LIBC_ACCESSOR struct __libc *__libc_loc() { static struct __libc __libc; diff --git a/src/internal/libc.h b/src/internal/libc.h index 8a84be0b..e81ef760 100644 --- a/src/internal/libc.h +++ b/src/internal/libc.h @@ -17,12 +17,20 @@ struct __libc { void (*fork_handler)(int); }; -#ifdef __PIC__ -extern struct __libc *__libc_loc(void) __attribute__((const)); -#define libc (*__libc_loc()) -#else + +#if 100*__GNUC__+__GNUC_MINOR__ >= 303 || defined(__PCC__) || defined(__TINYC__) +extern struct __libc __libc __attribute__((visibility("hidden"))); +#define libc __libc + +#elif !defined(__PIC__) extern struct __libc __libc; #define libc __libc + +#else +#define USE_LIBC_ACCESSOR +extern struct __libc *__libc_loc(void) __attribute__((const)); +#define libc (*__libc_loc()) + #endif diff --git a/src/ldso/start.c b/src/ldso/start.c new file mode 100644 index 00000000..f6ae7cd2 --- /dev/null +++ b/src/ldso/start.c @@ -0,0 +1,8 @@ +#include <stdlib.h> + +/* stub for archs that lack dynamic linker support */ + +void _start() +{ + _Exit(1); +} |