diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h | 155 |
1 files changed, 39 insertions, 116 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h index 45f5c44d5d..c808a97fc5 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h @@ -38,131 +38,54 @@ #undef PSEUDO #undef PSEUDO_NOERRNO #undef PSEUDO_ERRVAL +#undef PSEUDO_END #undef ENTRY #undef END #undef LOC -#define ENTRY(name) \ - .global C_SYMBOL_NAME(name); \ - .align 4;\ - C_LABEL(name);\ - .type name,@function; +#define ENTRY(name) \ + .align 4; \ + .global C_SYMBOL_NAME(name); \ + .type name, @function; \ +C_LABEL(name) \ + cfi_startproc; -#define END(name) \ +#define END(name) \ + cfi_endproc; \ .size name, . - name #define LOC(name) .L##name -#ifdef LINKER_HANDLES_R_SPARC_WDISP22 -/* Unfortunately, we cannot do this yet. Linker doesn't seem to - handle R_SPARC_WDISP22 against non-STB_LOCAL symbols properly . */ -# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \ - .section .gnu.linkonce.t.handler,"ax",@progbits; \ - .globl handler; \ - .hidden handler; \ - .type handler,@function; \ -handler: -#else -# define SYSCALL_ERROR_HANDLER_ENTRY(handler) \ - .subsection 3; \ -handler: -#endif - -#if RTLD_PRIVATE_ERRNO -# define SYSCALL_ERROR_HANDLER \ - .section .gnu.linkonce.t.__sparc_get_pic_l7,"ax",@progbits; \ - .globl __sparc_get_pic_l7; \ - .hidden __sparc_get_pic_l7; \ - .type __sparc_get_pic_l7,@function; \ -__sparc_get_pic_l7: \ - retl; \ - add %o7, %l7, %l7; \ - .previous; \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - save %sp,-96,%sp; \ - sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ - call __sparc_get_pic_l7; \ - add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ - ld [%l7 + rtld_errno], %l0; \ - st %i0, [%l0]; \ - jmpl %i7+8, %g0; \ - restore %g0, -1, %o0; \ - .previous; -#elif USE___THREAD -# ifndef NOT_IN_libc -# define SYSCALL_ERROR_ERRNO __libc_errno -# else -# define SYSCALL_ERROR_ERRNO errno -# endif -# ifdef SHARED -# define SYSCALL_ERROR_HANDLER \ - .section .gnu.linkonce.t.__sparc_get_pic_l7,"ax",@progbits; \ - .globl __sparc_get_pic_l7; \ - .hidden __sparc_get_pic_l7; \ - .type __sparc_get_pic_l7,@function; \ -__sparc_get_pic_l7: \ - retl; \ - add %o7, %l7, %l7; \ - .previous; \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - save %sp,-96,%sp; \ - sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %l1; \ - sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ - call __sparc_get_pic_l7; \ - add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ - add %l1, %tie_lo10(SYSCALL_ERROR_ERRNO), %l1; \ - ld [%l7 + %l1], %l1, %tie_ld(SYSCALL_ERROR_ERRNO); \ - st %i0, [%g7 + %l1], %tie_add(SYSCALL_ERROR_ERRNO); \ - jmpl %i7+8, %g0; \ - restore %g0, -1, %o0; \ - .previous; -# else -# define SYSCALL_ERROR_HANDLER \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \ - sethi %hi(_GLOBAL_OFFSET_TABLE_), %g2; \ - add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \ - add %g2, %lo(_GLOBAL_OFFSET_TABLE_), %g2; \ - ld [%g2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO); \ - st %o0, [%g7 + %g1], %tie_add(SYSCALL_ERROR_ERRNO); \ - jmpl %o7+8, %g0; \ - mov -1, %o0; \ - .previous; -# endif -#else -# define SYSCALL_ERROR_HANDLER \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - .global __errno_location; \ - .type __errno_location,@function; \ - save %sp, -96, %sp; \ - call __errno_location; \ - nop; \ - st %i0, [%o0]; \ - jmpl %i7+8, %g0; \ - restore %g0, -1, %o0; \ - .previous; -#endif - -#define PSEUDO(name, syscall_name, args) \ - .text; \ - ENTRY(name); \ - LOADSYSCALL(syscall_name); \ - ta 0x10; \ - bcs __syscall_error_handler; \ - nop; \ - SYSCALL_ERROR_HANDLER - -#define PSEUDO_NOERRNO(name, syscall_name, args) \ - .text; \ - ENTRY(name); \ - LOADSYSCALL(syscall_name); \ - ta 0x10 - -#define PSEUDO_ERRVAL(name, syscall_name, args) \ - .text; \ - ENTRY(name); \ - LOADSYSCALL(syscall_name); \ - ta 0x10 + /* If the offset to __syscall_error fits into a signed 22-bit + * immediate branch offset, the linker will relax the call into + * a normal branch. + */ +#define PSEUDO(name, syscall_name, args) \ + .text; \ + .globl __syscall_error; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x10; \ + bcc 1f; \ + mov %o7, %g1; \ + call __syscall_error; \ + mov %g1, %o7; \ +1: + +#define PSEUDO_NOERRNO(name, syscall_name, args)\ + .text; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x10; + +#define PSEUDO_ERRVAL(name, syscall_name, args) \ + .text; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x10; + +#define PSEUDO_END(name) \ + END(name) #else /* __ASSEMBLER__ */ |