diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/i386')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/i386/sysdep.S | 64 | ||||
| -rw-r--r-- | REORG.TODO/sysdeps/unix/i386/sysdep.h | 35 |
2 files changed, 99 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/i386/sysdep.S b/REORG.TODO/sysdeps/unix/i386/sysdep.S new file mode 100644 index 0000000000..f5321e02aa --- /dev/null +++ b/REORG.TODO/sysdeps/unix/i386/sysdep.S @@ -0,0 +1,64 @@ +/* Copyright (C) 1991-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#define _ERRNO_H +#include <bits/errno.h> + +#if IS_IN (rtld) +# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ +#endif + +.globl C_SYMBOL_NAME(errno) +.globl syscall_error + +__syscall_error: +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */ + jne notb /* Branch if not. */ + movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ +notb: +#endif +#ifndef PIC +# ifndef NO_TLS_DIRECT_SEG_REFS + movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF) +# else + movl %gs:0, %ecx + movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx) +# endif +#else + /* The caller has pushed %ebx and then set it up to + point to the GOT before calling us through the PLT. */ + movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx + + /* Pop %ebx value saved before jumping here. */ + popl %ebx +# ifndef NO_TLS_DIRECT_SEG_REFS + addl %gs:0, %ecx + movl %eax, (%ecx) +# else + movl %eax, %gs:0(%ecx) +# endif +#endif + movl $-1, %eax + ret + +#undef __syscall_error +END (__syscall_error) diff --git a/REORG.TODO/sysdeps/unix/i386/sysdep.h b/REORG.TODO/sysdeps/unix/i386/sysdep.h new file mode 100644 index 0000000000..b0aef3477d --- /dev/null +++ b/REORG.TODO/sysdeps/unix/i386/sysdep.h @@ -0,0 +1,35 @@ +/* Copyright (C) 1991-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdeps/unix/sysdep.h> +#include <sysdeps/i386/sysdep.h> + +#ifdef __ASSEMBLER__ + +/* This is defined as a separate macro so that other sysdep.h files + can include this one and then redefine DO_CALL. */ + +#define DO_CALL(syscall_name, args) \ + lea SYS_ify (syscall_name), %eax; \ + lcall $7, $0 + +#define r0 %eax /* Normal return-value register. */ +#define r1 %edx /* Secondary return-value register. */ +#define scratch %ecx /* Call-clobbered register for random use. */ +#define MOVE(x,y) movl x, y + +#endif /* __ASSEMBLER__ */ |