diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h | 176 |
1 files changed, 43 insertions, 133 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h index dfc38f151a..f156f9241a 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h @@ -49,142 +49,52 @@ #undef PSEUDO #undef PSEUDO_NOERRNO #undef PSEUDO_ERRVAL -#undef ENTRY - -#define ENTRY(name) \ - .global C_SYMBOL_NAME(name); \ - .align 2; \ - C_LABEL(name); \ - .type name,@function; - -#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.__sparc64.get_pic.l7,"ax",@progbits; \ - .globl __sparc64.get_pic.l7; \ - .hidden __sparc64.get_pic.l7; \ - .type __sparc64.get_pic.l7,@function; \ -__sparc64.get_pic.l7: \ - retl; \ - add %o7, %l7, %l7; \ - .previous; \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - save %sp, -192, %sp; \ - sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ - call __sparc64.get_pic.l7; \ - add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ - sethi %hi(rtld_errno), %g1; \ - or %g1, %lo(rtld_errno), %g1; \ - ldx [%l7 + %g1], %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.__sparc64.get_pic.l7,"ax",@progbits; \ - .globl __sparc64.get_pic.l7; \ - .hidden __sparc64.get_pic.l7; \ - .type __sparc64.get_pic.l7,@function; \ -__sparc64.get_pic.l7: \ - retl; \ - add %o7, %l7, %l7; \ - .previous; \ -SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \ - save %sp,-192,%sp; \ - sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %l1; \ - sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ - call __sparc64.get_pic.l7; \ - add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ - add %l1, %tie_lo10(SYSCALL_ERROR_ERRNO), %l1; \ - ldx [%l7 + %l1], %l1, %tie_ldx(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_), %g4; \ - add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \ - add %g4, %lo(_GLOBAL_OFFSET_TABLE_), %g4; \ - ldx [%g4 + %g1], %g1, %tie_ldx(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, -192, %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 0x6d; \ - bcs,pn %xcc, __syscall_error_handler; \ - nop; \ - SYSCALL_ERROR_HANDLER - -#define PSEUDO_NOERRNO(name, syscall_name, args) \ - .text; \ - ENTRY(name); \ - LOADSYSCALL(syscall_name); \ - ta 0x6d - -#define PSEUDO_ERRVAL(name, syscall_name, args) \ - .text; \ - ENTRY(name); \ - LOADSYSCALL(syscall_name); \ - ta 0x6d - #undef PSEUDO_END -#define PSEUDO_END(name) \ - .size name,.-name - -#undef PSEUDO_END_NOERRNO -#define PSEUDO_END_NOERRNO(name) \ - .size name,.-name +#undef ENTRY +#undef END -#undef PSEUDO_END_ERRVAL -#define PSEUDO_END_ERRVAL(name) \ - .size name,.-name +#define ENTRY(name) \ + .align 4; \ + .global C_SYMBOL_NAME(name); \ + .type name, @function; \ +C_LABEL(name) \ + cfi_startproc; + +#define END(name) \ + cfi_endproc; \ + .size name, . - name + + /* 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 0x6d; \ + bcc,pt %xcc, 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 0x6d; + +#define PSEUDO_ERRVAL(name, syscall_name, args) \ + .text; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x6d; + +#define PSEUDO_END(name) \ + END(name) -#undef END -#define END(name) \ - .size name,.-name /* Careful here! This "ret" define can interfere; use jmpl if unsure. */ #define ret retl; nop |