diff options
Diffstat (limited to 'libc/sysdeps/linux/alpha')
| -rw-r--r-- | libc/sysdeps/linux/alpha/Makefile | 10 | ||||
| -rw-r--r-- | libc/sysdeps/linux/alpha/crt1.S (renamed from libc/sysdeps/linux/alpha/crt0.S) | 80 |
2 files changed, 43 insertions, 47 deletions
diff --git a/libc/sysdeps/linux/alpha/Makefile b/libc/sysdeps/linux/alpha/Makefile index 5c7310b38..c37858380 100644 --- a/libc/sysdeps/linux/alpha/Makefile +++ b/libc/sysdeps/linux/alpha/Makefile @@ -19,8 +19,8 @@ TOPDIR=../../../../ include $(TOPDIR)Rules.mak -CRT0_SRC = crt0.S -CRT0_OBJ = crt0.o crt1.o +CRT_SRC = crt1.S +CRT_OBJ = crt1.o CTOR_TARGETS=$(TOPDIR)lib/crti.o $(TOPDIR)lib/crtn.o SSRC=__longjmp.S brk.S bsd-_setjmp.S bsd-setjmp.S clone.S \ @@ -36,12 +36,12 @@ OBJ_LIST=../../../obj.sysdeps.$(TARGET_ARCH) all: $(OBJ_LIST) -$(OBJ_LIST): $(OBJS) $(CRT0_OBJ) $(CTOR_TARGETS) +$(OBJ_LIST): $(OBJS) $(CRT_OBJ) $(CTOR_TARGETS) echo $(patsubst %, sysdeps/linux/$(TARGET_ARCH)/%, $(OBJS)) > $(OBJ_LIST) $(INSTALL) -d $(TOPDIR)lib/ - cp $(CRT0_OBJ) $(TOPDIR)lib/ + cp $(CRT_OBJ) $(TOPDIR)lib/ -$(CRT0_OBJ): $(CRT0_SRC) +$(CRT_OBJ): $(CRT_SRC) $(CC) $(ASFLAGS) -DL_$* $< -c -o $*.o $(STRIPTOOL) -x -R .note -R .comment $*.o diff --git a/libc/sysdeps/linux/alpha/crt0.S b/libc/sysdeps/linux/alpha/crt1.S index e8d0c5498..0831ecf6f 100644 --- a/libc/sysdeps/linux/alpha/crt0.S +++ b/libc/sysdeps/linux/alpha/crt1.S @@ -19,66 +19,62 @@ 02111-1307 USA. */ #include <features.h> +#include <asm/regdef.h> -#define a0 $16 /* argument registers (caller-saved) */ -#define a1 $17 -#define a2 $18 -#define a3 $19 -#define a4 $20 -#define a5 $21 -#define ra $26 /* return address register */ - -#define s6 $15 -#define fp s6 /* frame-pointer (s6 in frame-less procedures) */ -#define gp $29 /* global pointer */ -#define sp $30 /* stack pointer */ -#define zero $31 /* reads as zero, writes are noops */ - - .text - .align 3 - .global _start - .ent _start, 0 - .type _start,@function -#if ! defined(__UCLIBC_CTOR_DTOR__) - .weak _init - .weak _fini +.text +.global _start +.ent _start,0 +.type _start,%function +#if defined(__UCLIBC_CTOR_DTOR__) +.type _init,%function +.type _fini,%function +#else +.weak _init +.weak _fini #endif - .type __uClibc_main,@function +.type __uClibc_main,%function /* Stick in a dummy reference to main(), so that if an application * is linking when the main() function is in a static library (.a) * we can be sure that main() actually gets linked in */ - .type main,@function +.type main,%function _start: - .frame fp, 0, zero - mov zero, fp + .frame $15, 0, $15 br gp, 1f 1: ldgp gp, 0(gp) subq sp, 16, sp + mov 0, $15 .prologue 0 - ldl a0, 16(sp) /* get argc */ - lda a1, 24(sp) /* get argv */ - addq a0, 1, a2 - s8addq a2, a1, a2 /* Calculate environ */ + /* Load address of the user's main function. */ + lda a0, main + + ldl a1, 16(sp) /* get argc */ + lda a2, 24(sp) /* get argv */ + + /* Load address of our own entry points to .fini and .init. */ + lda a3, _init + lda a4, _fini - /* Call the user's main function, and exit with its value. - But let the libc call main. */ + /* Store address of the shared library termination function. */ + mov v0, a5 + + /* Provide the highest stack address to the user code. */ + stq sp, 0(sp) + + /* Call the user's main function, and exit with its value. + * But let the libc call main. */ jsr ra, __uClibc_main - /* Die very horribly if exit returns. Call_pal hlt is callable from - kernel mode only; this will result in an illegal instruction trap. */ + /* Die very horribly if exit returns. Call_pal hlt is callable from + * kernel mode only; this will result in an illegal instruction trap. */ call_pal 0 .end _start -/* For ECOFF backwards compatibility. */ -.weak __start; - __start = _start - /* Define a symbol for the first piece of initialized data. */ - .data - .globl __data_start +.data +.global __data_start __data_start: - .long 0 - .weak data_start +.long 0 +.weak data_start data_start = __data_start |