mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
5631abde36
Joseph Myers <joseph@codesourcery.com> * sysdeps/arm/dl-machine.h (elf_machine_dynamic): Ditto. (elf_machine_load_address): Clear T bit of PLT entry contents. (RTLD_START): Mark function symbols as such. Tweak pc-relative addressing to avoid depending on pc read pipeline offset. * sysdeps/arm/machine-gmon.h (MCOUNT): Add Thumb-2 implementation. * sysdeps/arm/tls-macros.h: Add alignment for Thumb-2. (ARM_PC_OFFSET): Define. (TLS_IE): Define differently for Thumb-2. (TLS_LE, TLS_LD, TLS_GD): Use ARM_PC_OFFSET. * sysdeps/arm/elf/start.S: Switch to thumb mode for Thumb-2. * sysdeps/unix/sysv/linux/arm/eabi/sysdep.h (INTERNAL_SYSCALL_RAW): Add Thumb implementation. * sysdeps/unix/sysv/linux/arm/eabi/nptl/aio_misc.h: New. * sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-resume.c: Enforce alignment for Thumb-2. Adjust offset from PC for Thumb-2. * sysdeps/unix/sysv/linux/arm/eabi/nptl/unwind-forcedunwind.c: Ditto. * sysdeps/unix/sysv/linux/arm/nptl/bits/atomic.h (atomic_full_barrier, __arch_compare_and_exchange_val_32_acq): Add Thumb-2 implementation.
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
#ifdef __thumb2__
|
|
#define ARM_PC_OFFSET "4"
|
|
#else
|
|
#define ARM_PC_OFFSET "8"
|
|
#endif
|
|
|
|
#define TLS_LE(x) \
|
|
({ int *__result; \
|
|
void *tp = __builtin_thread_pointer (); \
|
|
asm ("ldr %0, 1f; " \
|
|
"add %0, %1, %0; " \
|
|
"b 2f; " \
|
|
".align 2; " \
|
|
"1: .word " #x "(tpoff); " \
|
|
"2: " \
|
|
: "=&r" (__result) : "r" (tp)); \
|
|
__result; })
|
|
|
|
#ifdef __thumb2__
|
|
#define TLS_IE(x) \
|
|
({ int *__result; \
|
|
void *tp = __builtin_thread_pointer (); \
|
|
asm ("ldr %0, 1f; " \
|
|
"3: add %0, pc, %0;" \
|
|
"ldr %0, [%0];" \
|
|
"add %0, %1, %0; " \
|
|
"b 2f; " \
|
|
".align 2; " \
|
|
"1: .word " #x "(gottpoff) + (. - 3b - 4); " \
|
|
"2: " \
|
|
: "=&r" (__result) : "r" (tp)); \
|
|
__result; })
|
|
#else
|
|
#define TLS_IE(x) \
|
|
({ int *__result; \
|
|
void *tp = __builtin_thread_pointer (); \
|
|
asm ("ldr %0, 1f; " \
|
|
"3: ldr %0, [pc, %0];" \
|
|
"add %0, %1, %0; " \
|
|
"b 2f; " \
|
|
".align 2; " \
|
|
"1: .word " #x "(gottpoff) + (. - 3b - 8); " \
|
|
"2: " \
|
|
: "=&r" (__result) : "r" (tp)); \
|
|
__result; })
|
|
#endif
|
|
|
|
#define TLS_LD(x) \
|
|
({ char *__result; \
|
|
int __offset; \
|
|
extern void *__tls_get_addr (void *); \
|
|
asm ("ldr %0, 2f; " \
|
|
"1: add %0, pc, %0; " \
|
|
"b 3f; " \
|
|
".align 2; " \
|
|
"2: .word " #x "(tlsldm) + (. - 1b - "ARM_PC_OFFSET"); " \
|
|
"3: " \
|
|
: "=r" (__result)); \
|
|
__result = (char *)__tls_get_addr (__result); \
|
|
asm ("ldr %0, 1f; " \
|
|
"b 2f; " \
|
|
".align 2; " \
|
|
"1: .word " #x "(tlsldo); " \
|
|
"2: " \
|
|
: "=r" (__offset)); \
|
|
(int *) (__result + __offset); })
|
|
|
|
#define TLS_GD(x) \
|
|
({ int *__result; \
|
|
extern void *__tls_get_addr (void *); \
|
|
asm ("ldr %0, 2f; " \
|
|
"1: add %0, pc, %0; " \
|
|
"b 3f; " \
|
|
".align 2; " \
|
|
"2: .word " #x "(tlsgd) + (. - 1b - "ARM_PC_OFFSET"); " \
|
|
"3: " \
|
|
: "=r" (__result)); \
|
|
(int *)__tls_get_addr (__result); })
|