diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/sysdep.h | 131 |
1 files changed, 90 insertions, 41 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/sysdep.h b/sysdeps/unix/sysv/linux/sh/sysdep.h index 7d31378eb5..ee39121755 100644 --- a/sysdeps/unix/sysv/linux/sh/sysdep.h +++ b/sysdeps/unix/sysv/linux/sh/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1992,93,95-99,2000,02 Free Software Foundation, Inc. +/* Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995. Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>. @@ -45,9 +45,9 @@ returns a value in -1 .. -4095 as a valid result so we can savely test with -4095. */ +#define _IMM1 #-1 #define _IMM12 #-12 #undef PSEUDO -#ifdef SHARED #define PSEUDO(name, syscall_name, args) \ .text; \ ENTRY (name); \ @@ -57,50 +57,99 @@ shad r2,r1; \ not r1,r1; \ tst r1,r1; \ - bf 1f; \ - mov r0,r4; \ - mov.l r12,@-r15; \ - sts.l pr,@-r15; \ - mov.l 0f,r12; \ - mova 0f,r0; \ - add r0,r12; \ - mov.l 2f,r1; \ - mova 2f,r0; \ - add r0,r1; \ - jsr @r1; \ - nop; \ - lds.l @r15+,pr; \ - rts; \ - mov.l @r15+,r12; \ - .align 2; \ - 2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \ - 0: .long _GLOBAL_OFFSET_TABLE_; \ - 1: -#else -#define PSEUDO(name, syscall_name, args) \ - .text; \ - ENTRY (name); \ - DO_CALL (syscall_name, args); \ - mov r0,r1; \ - mov _IMM12,r2; \ - shad r2,r1; \ - not r1,r1; \ - tst r1,r1; \ - bf 1f; \ - mov.l 2f,r1; \ - jmp @r1; \ - mov r0, r4; \ - .align 2; \ - 2: .long PLTJMP(C_SYMBOL_NAME(__syscall_error)); \ - 1: -#endif + bf .Lpseudo_end; \ + SYSCALL_ERROR_HANDLER; \ + .Lpseudo_end: #undef PSEUDO_END #define PSEUDO_END(name) \ - SYSCALL_ERROR_HANDLER \ END (name) -#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ +#ifndef PIC +# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ +#else +# if RTLD_PRIVATE_ERRNO +# define SYSCALL_ERROR_HANDLER \ + neg r0,r1; \ + mov.l 0f,r12; \ + mova 0f,r0; \ + add r0,r12; \ + mov.l 1f,r0; \ + mov.l r1,@(r0,r12) + bra .Lpseudo_end; \ + mov _IMM1,r0; \ + .align 2; \ + 0: .long _GLOBAL_OFFSET_TABLE_; \ + 1: .long errno@GOTOFF + +# elif defined _LIBC_REENTRANT + +# if USE___THREAD +# ifndef NOT_IN_libc +# define SYSCALL_ERROR_ERRNO __libc_errno +# else +# define SYSCALL_ERROR_ERRNO errno +# endif +# define SYSCALL_ERROR_HANDLER \ + neg r0,r1; \ + mov r12,r2; \ + mov.l 0f,r12; \ + mova 0f,r0; \ + add r0,r12; \ + mov.l 1f,r0; \ + stc gbr, r4; \ + mov.l @(r0,r12),r0; \ + mov r2,r12; \ + add r4,r0; \ + mov.l r1,@r0; \ + bra .Lpseudo_end; \ + mov _IMM1,r0; \ + .align 2; \ + 0: .long _GLOBAL_OFFSET_TABLE_; \ + 1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF +# else +# define SYSCALL_ERROR_HANDLER \ + neg r0,r1; \ + mov.l r12,@-r15; \ + mov.l r1,@-r15; \ + mov.l 0f,r12; \ + mova 0f,r0; \ + add r0,r12; \ + sts.l pr,@-r15; \ + mov.l 1f,r1; \ + bsrf r1; \ + nop; \ + 2: lds.l @r15+,pr; \ + mov.l @r15+,r1; \ + mov.l r1,@r0; \ + mov.l @r15+,r12; \ + bra .Lpseudo_end; \ + mov _IMM1,r0; \ + .align 2; \ + 0: .long _GLOBAL_OFFSET_TABLE_; \ + 1: .long PLTJMP(C_SYMBOL_NAME(__errno_location))-(2b+2-.) +/* A quick note: it is assumed that the call to `__errno_location' does + not modify the stack! */ +# endif +# else +/* Store (-r0) into errno through the GOT. */ +# define SYSCALL_ERROR_HANDLER \ + neg r0,r1; \ + mov r12,r2; \ + mov.l 0f,r12; \ + mova 0f,r0; \ + add r0,r12; \ + mov.l 1f,r0; \ + mov.l @(r0,r12),r0; \ + mov r2,r12; \ + mov.l r1,@r0; \ + bra .Lpseudo_end; \ + mov _IMM1,r0; \ + .align 2; \ + 0: .long _GLOBAL_OFFSET_TABLE_; \ + 1: .long errno@GOT +# endif /* _LIBC_REENTRANT */ +#endif /* PIC */ #define SYSCALL_INST0 trapa #0x10 #define SYSCALL_INST1 trapa #0x11 |