/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include #include #ifndef __ASSEMBLER__ # include #endif #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt # define _IMM12 #-12 # define _IMM16 #-16 # define _IMP16 #16 # undef PSEUDO # define PSEUDO(name, syscall_name, args) \ .text; \ ENTRY (name); \ .Lpseudo_start: \ SINGLE_THREAD_P; \ bf .Lpseudo_cancel; \ .type __##syscall_name##_nocancel,@function; \ .globl __##syscall_name##_nocancel; \ __##syscall_name##_nocancel: \ DO_CALL (syscall_name, args); \ mov r0,r1; \ mov _IMM12,r2; \ shad r2,r1; \ not r1,r1; \ tst r1,r1; \ bt .Lsyscall_error; \ bra .Lpseudo_end; \ nop; \ .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \ .Lpseudo_cancel: \ sts.l pr,@-r15; \ .LCFI0: \ add _IMM16,r15; \ SAVE_ARGS_##args; \ .LCFI1: \ CENABLE; \ LOAD_ARGS_##args; \ add _IMP16,r15; \ .LCFI2: \ lds.l @r15+,pr; \ .LCFI3: \ DO_CALL(syscall_name, args); \ SYSCALL_INST_PAD; \ sts.l pr,@-r15; \ .LCFI4: \ mov.l r0,@-r15; \ .LCFI5: \ CDISABLE; \ mov.l @r15+,r0; \ .LCFI6: \ lds.l @r15+,pr; \ .LCFI7: \ mov r0,r1; \ mov _IMM12,r2; \ shad r2,r1; \ not r1,r1; \ tst r1,r1; \ bf .Lpseudo_end; \ .Lsyscall_error: \ SYSCALL_ERROR_HANDLER; \ .Lpseudo_end: \ /* Create unwinding information for the syscall wrapper. */ \ .section .eh_frame,"a",@progbits; \ .Lframe1: \ .ualong .LECIE1-.LSCIE1; \ .LSCIE1: \ .ualong 0x0; \ .byte 0x1; \ AUGMENTATION_STRING; \ .uleb128 0x1; \ .sleb128 -4; \ .byte 0x11; \ AUGMENTATION_PARAM; \ .byte 0xc; \ .uleb128 0xf; \ .uleb128 0x0; \ .align 2; \ .LECIE1: \ .LSFDE1: \ .ualong .LEFDE1-.LASFDE1; \ .LASFDE1: \ .ualong .LASFDE1-.Lframe1; \ START_SYMBOL_REF; \ .ualong .Lpseudo_end - .Lpseudo_start; \ AUGMENTATION_PARAM_FDE; \ .byte 0x4; \ .ualong .LCFI0-.Lpseudo_start; \ .byte 0xe; \ .uleb128 0x4; \ .byte 0x91; \ .uleb128 0x1; \ .byte 0x4; \ .ualong .LCFI1-.LCFI0; \ .byte 0xe; \ .uleb128 0x14; \ FRAME_REG_##args; \ .byte 0x4; \ .ualong .LCFI2-.LCFI1; \ .byte 0xe; \ .uleb128 0x4; \ .byte 0x4; \ .ualong .LCFI3-.LCFI2; \ .byte 0xe; \ .uleb128 0x0; \ .byte 0xd1; \ .byte 0x4; \ .ualong .LCFI4-.LCFI3; \ .byte 0xe; \ .uleb128 0x4; \ .byte 0x91; \ .uleb128 0x1; \ .byte 0x4; \ .ualong .LCFI5-.LCFI4; \ .byte 0xe; \ .uleb128 0x8; \ .byte 0x80; \ .uleb128 0x2; \ .byte 0x4; \ .ualong .LCFI6-.LCFI5; \ .byte 0xe; \ .uleb128 0x4; \ .byte 0xc0; \ .byte 0x4; \ .ualong .LCFI7-.LCFI6; \ .byte 0xe; \ .uleb128 0x0; \ .byte 0xd1; \ .align 2; \ .LEFDE1: \ .previous # ifdef SHARED # define AUGMENTATION_STRING .string "zR" # define AUGMENTATION_PARAM .uleb128 1; .byte 0x1b # define AUGMENTATION_PARAM_FDE .uleb128 0 # define START_SYMBOL_REF .long .Lpseudo_start-. # else # define AUGMENTATION_STRING .ascii "\0" # define AUGMENTATION_PARAM # define AUGMENTATION_PARAM_FDE # define START_SYMBOL_REF .long .Lpseudo_start # endif # define FRAME_REG_0 /* Nothing. */ # define FRAME_REG_1 FRAME_REG_0; .byte 0x84; .uleb128 5 # define FRAME_REG_2 FRAME_REG_1; .byte 0x85; .uleb128 4 # define FRAME_REG_3 FRAME_REG_2; .byte 0x86; .uleb128 3 # define FRAME_REG_4 FRAME_REG_3; .byte 0x87; .uleb128 2 # define FRAME_REG_5 FRAME_REG_4 # define FRAME_REG_6 FRAME_REG_5 # undef PSEUDO_END # define PSEUDO_END(sym) \ END (sym) # define SAVE_ARGS_0 /* Nothing. */ # define SAVE_ARGS_1 SAVE_ARGS_0; mov.l r4,@(0,r15) # define SAVE_ARGS_2 SAVE_ARGS_1; mov.l r5,@(4,r15) # define SAVE_ARGS_3 SAVE_ARGS_2; mov.l r6,@(8,r15) # define SAVE_ARGS_4 SAVE_ARGS_3; mov.l r7,@(12,r15) # define SAVE_ARGS_5 SAVE_ARGS_4 # define SAVE_ARGS_6 SAVE_ARGS_5 # define LOAD_ARGS_0 /* Nothing. */ # define LOAD_ARGS_1 LOAD_ARGS_0; mov.l @(0,r15),r4 # define LOAD_ARGS_2 LOAD_ARGS_1; mov.l @(4,r15),r5 # define LOAD_ARGS_3 LOAD_ARGS_2; mov.l @(8,r15),r6 # define LOAD_ARGS_4 LOAD_ARGS_3; mov.l @(12,r15),r7 # define LOAD_ARGS_5 LOAD_ARGS_4 # define LOAD_ARGS_6 LOAD_ARGS_5 # ifdef IS_IN_libpthread # define __local_enable_asynccancel __pthread_enable_asynccancel # define __local_disable_asynccancel __pthread_disable_asynccancel # elif !defined NOT_IN_libc # define __local_enable_asynccancel __libc_enable_asynccancel # define __local_disable_asynccancel __libc_disable_asynccancel # elif defined IS_IN_librt # define __local_enable_asynccancel __librt_enable_asynccancel # define __local_disable_asynccancel __librt_disable_asynccancel # else # error Unsupported library # endif # define CENABLE \ mov.l 1f,r0; \ bsrf r0; \ nop; \ 0: bra 2f; \ mov r0,r2; \ .align 2; \ 1: .long __local_enable_asynccancel - 0b; \ 2: # define CDISABLE \ mov.l 1f,r0; \ bsrf r0; \ mov r2,r4; \ 0: bra 2f; \ nop; \ .align 2; \ 1: .long __local_disable_asynccancel - 0b; \ 2: # ifndef __ASSEMBLER__ # define SINGLE_THREAD_P \ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ header.multiple_threads) == 0, 1) # else # define SINGLE_THREAD_P \ stc gbr,r0; \ mov.w 0f,r1; \ sub r1,r0; \ mov.l @(MULTIPLE_THREADS_OFFSET,r0),r0; \ bra 1f; \ tst r0,r0; \ 0: .word TLS_PRE_TCB_SIZE; \ 1: # endif #elif !defined __ASSEMBLER__ # define SINGLE_THREAD_P (1) # define NO_CANCELLATION 1 #endif