From 369b849f1a382df2c1ee5d3a997bf318950cf5ab Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 24 Oct 2002 18:49:00 +0000 Subject: * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. (INLINE_SYSCALL): Use that. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. (INLINE_SYSCALL): Use that. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. (INLINE_SYSCALL): Use that. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Include dl-sysdep.h. (SYSCALL_ERROR_HANDLER): Define RTLD_PRIVATE_ERRNO variant. (__INTERNAL_SYSCALL_STRING): Define. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Include dl-sysdep.h. (SYSCALL_ERROR_HANDLER): Define RTLD_PRIVATE_ERRNO variant. (__INTERNAL_SYSCALL_STRING): Define. * sysdeps/unix/sysv/linux/sparc/sysdep.h (INLINE_SYSCALL): Pass __SYSCALL_STRING to inline_syscall*. (INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. (inline_syscall0, inline_syscall1, inline_syscall2, inline_syscall3, inline_syscall4, inline_syscall5, inline_syscall6): Add string argument. 2002-10-24 Roland McGrath * libio/bug-wfflush.c: New file. * libio/Makefile (tests): Add bug-wfflush. --- ChangeLog | 41 ++++++++++---- libio/Makefile | 2 +- libio/bug-wfflush.c | 75 ++++++++++++++++++++++++++ sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h | 44 +++++++++------ sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h | 22 ++++++-- sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h | 54 +++++++++++++------ sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h | 44 ++++++++++++--- sysdeps/unix/sysv/linux/sparc/sysdep.h | 41 ++++++++------ sysdeps/unix/sysv/linux/x86_64/sysdep.h | 22 ++++++-- 9 files changed, 271 insertions(+), 74 deletions(-) create mode 100644 libio/bug-wfflush.c diff --git a/ChangeLog b/ChangeLog index 2308121..4e464dc 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,35 @@ +2002-10-24 Jakub Jelinek + + * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (INTERNAL_SYSCALL, + INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. + (INLINE_SYSCALL): Use that. + * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (INTERNAL_SYSCALL, + INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. + (INLINE_SYSCALL): Use that. + * sysdeps/unix/sysv/linux/x86_64/sysdep.h (INTERNAL_SYSCALL, + INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros. + (INLINE_SYSCALL): Use that. + * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Include + dl-sysdep.h. + (SYSCALL_ERROR_HANDLER): Define RTLD_PRIVATE_ERRNO variant. + (__INTERNAL_SYSCALL_STRING): Define. + * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Include + dl-sysdep.h. + (SYSCALL_ERROR_HANDLER): Define RTLD_PRIVATE_ERRNO variant. + (__INTERNAL_SYSCALL_STRING): Define. + * sysdeps/unix/sysv/linux/sparc/sysdep.h (INLINE_SYSCALL): Pass + __SYSCALL_STRING to inline_syscall*. + (INTERNAL_SYSCALL, INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): + New macros. + (inline_syscall0, inline_syscall1, inline_syscall2, inline_syscall3, + inline_syscall4, inline_syscall5, inline_syscall6): Add string + argument. + +2002-10-24 Roland McGrath + + * libio/bug-wfflush.c: New file. + * libio/Makefile (tests): Add bug-wfflush. + 2002-10-23 Roland McGrath * stdio-common/tst-fphex.c: New file. @@ -81,15 +113,6 @@ * sysdeps/gnu/bits/msq.h: Likewise. * sysvipc/sys/ipc.h: Likewise. -2002-10-22 Roland McGrath - - * sysdeps/generic/libc-tls.c (_dl_tls_static_used): New variable. - * sysdeps/generic/ldsodefs.h (struct rtld_global): New member - `_dl_tls_static_used'. - (TLS_STATIC_MIN): New macro. - * elf/dl-reloc.c [USE_TLS] (allocate_static_tls): New function. - (CHECK_STATIC_TLS): Use it. - 2002-10-22 Ulrich Drepper * elf/dl-load.c (struct filebuf): For buf element to have the diff --git a/libio/Makefile b/libio/Makefile index 72a6bad..ad2d5dd 100644 --- a/libio/Makefile +++ b/libio/Makefile @@ -53,7 +53,7 @@ tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc \ tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 tst-atime tst-eof \ tst-freopen bug-rewind bug-rewind2 bug-ungetc bug-fseek \ tst-mmap-eofsync tst-mmap-fflushsync bug-mmap-fflush \ - tst-mmap2-eofsync tst-mmap-offend bug-fopena+ + tst-mmap2-eofsync tst-mmap-offend bug-fopena+ bug-wfflush test-srcs = test-freopen all: # Make this the default target; it will be defined in Rules. diff --git a/libio/bug-wfflush.c b/libio/bug-wfflush.c new file mode 100644 index 0000000..87695f2 --- /dev/null +++ b/libio/bug-wfflush.c @@ -0,0 +1,75 @@ +/* Test program for bug in wide streams. */ + +#include +#include + +static void do_prepare (void); +#define PREPARE(argc, argv) do_prepare () +static int do_test (void); +#define TEST_FUNCTION do_test () +#include + +static char *temp_file; + +static void +do_prepare (void) +{ + int fd = create_temp_file ("bug-ungetc.", &temp_file); + if (fd == -1) + { + printf ("cannot create temporary file: %m\n"); + exit (1); + } + write (fd, "1!", 2); + close (fd); +} + +static int +do_test (void) +{ + FILE *f = fopen (temp_file, "r+"); + + if (f == NULL) + { + printf ("fopen: %m\n"); + return 1; + } + +#define L_(s) L##s + //#define fwscanf fscanf + //#define fwprintf fprintf + + int i; + if (fwscanf (f, L_("%d!"), &i) != 1) + { + printf ("fwscanf failed\n"); + return 1; + } + + if (fseek (f, 0, SEEK_SET) != 0) + { + printf ("fseek: %m\n"); + return 1; + } + + if (fwprintf (f, L_("1!")) < 2) + { + printf ("fwprintf: %m\n"); + return 1; + } + + if (fflush (f) != 0) + { + printf ("fflush: %m\n"); + return 1; + } + + if (fclose (f) != 0) + { + printf ("fclose: %m\n"); + return 1; + } + + puts ("Test succeeded."); + return 0; +} diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h index 0a95f91..c26d3f1 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h +++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h @@ -119,24 +119,36 @@ #endif /* __ASSEMBLER__ */ #undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ - ({ \ - DECLARGS_##nr(args) \ - int err; \ - asm volatile ( \ - LOADARGS_##nr \ - "svc %b1\n\t" \ - "lr %0,%%r2\n\t" \ - : "=d" (err) \ - : "I" (__NR_##name) ASMFMT_##nr \ - : "memory", "cc", "2", "3", "4", "5", "6"); \ - if (err >= 0xfffff001) \ - { \ - __set_errno(-err); \ - err = 0xffffffff; \ - } \ +#define INLINE_SYSCALL(name, nr, args...) \ + ({ \ + unsigned int err = INTERNAL_SYSCALL (name, nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (err), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (err)); \ + err = 0xffffffff; \ + } \ + (int) err; }) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + ({ \ + DECLARGS_##nr(args) \ + int err; \ + asm volatile ( \ + LOADARGS_##nr \ + "svc %b1\n\t" \ + "lr %0,%%r2\n\t" \ + : "=d" (err) \ + : "I" (__NR_##name) ASMFMT_##nr \ + : "memory", "cc", "2", "3", "4", "5", "6"); \ (int) err; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + #define DECLARGS_0() #define DECLARGS_1(arg1) \ unsigned int gpr2 = (unsigned int) (arg1); diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h index 2ad9c62..0728537 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h +++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h @@ -115,6 +115,17 @@ #undef INLINE_SYSCALL #define INLINE_SYSCALL(name, nr, args...) \ ({ \ + unsigned int err = INTERNAL_SYSCALL (name, nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (err), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (err)); \ + err = -1; \ + } \ + (int) err; }) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + ({ \ DECLARGS_##nr(args) \ int err; \ asm volatile ( \ @@ -124,13 +135,14 @@ : "=d" (err) \ : "I" (__NR_##name) ASMFMT_##nr \ : "memory", "cc", "2", "3", "4", "5", "6"); \ - if (err >= 0xfffff001) \ - { \ - __set_errno(-err); \ - err = -1; \ - } \ (int) err; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + #define DECLARGS_0() #define DECLARGS_1(arg1) \ unsigned long gpr2 = (unsigned long) (arg1); diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h index c2e7e0a..e3573fd 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h @@ -22,6 +22,10 @@ #include +#ifdef IS_IN_rtld +# include /* Defines RTLD_PRIVATE_ERRNO. */ +#endif + #undef SYS_ify #define SYS_ify(syscall_name) __NR_##syscall_name @@ -50,25 +54,35 @@ #define LOC(name) .L##name -#ifdef PIC -#define SYSCALL_ERROR_HANDLER \ - .global C_SYMBOL_NAME(__errno_location); \ - .type C_SYMBOL_NAME(__errno_location),@function; \ - save %sp,-96,%sp; \ +#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; \ + 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 + errno], %l0; \ + st %i0, [%l0]; \ + jmpl %i7+8, %g0; \ + restore %g0, -1, %o0; +#else +# define 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; -#else -#define SYSCALL_ERROR_HANDLER \ - save %sp,-96,%sp; \ - call __errno_location; \ - nop; \ - st %i0,[%o0]; \ - jmpl %i7+8,%g0; \ - restore %g0,-1,%o0; -#endif /* PIC */ + st %i0, [%o0]; \ + jmpl %i7+8, %g0; \ + restore %g0, -1, %o0; +#endif #define PSEUDO(name, syscall_name, args) \ .text; \ @@ -97,6 +111,12 @@ " restore %%g0, -1, %%o0;" \ ".previous;" +#define __INTERNAL_SYSCALL_STRING \ + "ta 0x10;" \ + "bcs,a 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" + #define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g7", \ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h index 1821862..3c8999a 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1997, 2000, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson , 1997. @@ -22,6 +22,10 @@ #include +#ifdef IS_IN_rtld +# include /* Defines RTLD_PRIVATE_ERRNO. */ +#endif + #undef SYS_ify #define SYS_ify(syscall_name) __NR_##syscall_name @@ -43,13 +47,35 @@ C_LABEL(name); \ .type name,@function; -#define SYSCALL_ERROR_HANDLER \ +#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; \ save %sp, -192, %sp; \ - call __errno_location; \ - nop; \ - st %i0, [%o0]; \ + sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7; \ + call __sparc.get_pic.l7; \ + add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7; \ + ldx [%l7 + errno], %l0; \ + st %i0, [%l0]; \ jmpl %i7+8, %g0; \ - restore %g0, -1, %o0 + restore %g0, -1, %o0; +#else +# define 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; +#endif #define PSEUDO(name, syscall_name, args) \ .text; \ @@ -88,6 +114,12 @@ "restore %%g0, -1, %%o0;" \ "1:" +#define __INTERNAL_SYSCALL_STRING \ + "ta 0x6d;" \ + "bcs,a,pt %%xcc, 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" + #define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g7", \ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ diff --git a/sysdeps/unix/sysv/linux/sparc/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sysdep.h index cf59f12..cc719b4 100644 --- a/sysdeps/unix/sysv/linux/sparc/sysdep.h +++ b/sysdeps/unix/sysv/linux/sparc/sysdep.h @@ -21,67 +21,78 @@ #define _LINUX_SPARC_SYSDEP_H 1 #undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) inline_syscall##nr(name, args) +#define INLINE_SYSCALL(name, nr, args...) \ + inline_syscall##nr(__SYSCALL_STRING, name, args) -#define inline_syscall0(name,dummy...) \ +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + inline_syscall##nr(__INTERNAL_SYSCALL_STRING, name, args) + +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned long) (val) >= -515L) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + +#define inline_syscall0(string,name,dummy...) \ ({ \ register long __o0 __asm__ ("o0"); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall1(name,arg1) \ +#define inline_syscall1(string,name,arg1) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall2(name,arg1,arg2) \ +#define inline_syscall2(string,name,arg1,arg2) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __o1 __asm__ ("o1") = (long)(arg2); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0), "r" (__o1) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall3(name,arg1,arg2,arg3) \ +#define inline_syscall3(string,name,arg1,arg2,arg3) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __o1 __asm__ ("o1") = (long)(arg2); \ register long __o2 __asm__ ("o2") = (long)(arg3); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0), "r" (__o1), \ "r" (__o2) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall4(name,arg1,arg2,arg3,arg4) \ +#define inline_syscall4(string,name,arg1,arg2,arg3,arg4) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __o1 __asm__ ("o1") = (long)(arg2); \ register long __o2 __asm__ ("o2") = (long)(arg3); \ register long __o3 __asm__ ("o3") = (long)(arg4); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0), "r" (__o1), \ "r" (__o2), "r" (__o3) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \ +#define inline_syscall5(string,name,arg1,arg2,arg3,arg4,arg5) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __o1 __asm__ ("o1") = (long)(arg2); \ @@ -89,14 +100,14 @@ register long __o3 __asm__ ("o3") = (long)(arg4); \ register long __o4 __asm__ ("o4") = (long)(arg5); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0), "r" (__o1), \ "r" (__o2), "r" (__o3), "r" (__o4) : \ __SYSCALL_CLOBBERS); \ __o0; \ }) -#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \ +#define inline_syscall6(string,name,arg1,arg2,arg3,arg4,arg5,arg6) \ ({ \ register long __o0 __asm__ ("o0") = (long)(arg1); \ register long __o1 __asm__ ("o1") = (long)(arg2); \ @@ -105,7 +116,7 @@ register long __o4 __asm__ ("o4") = (long)(arg5); \ register long __o5 __asm__ ("o5") = (long)(arg6); \ register long __g1 __asm__ ("g1") = __NR_##name; \ - __asm __volatile (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \ + __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \ "0" (__g1), "1" (__o0), "r" (__o1), \ "r" (__o2), "r" (__o3), "r" (__o4), \ "r" (__o5) : \ diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index 2da4d41..5c4c708 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -186,6 +186,17 @@ #undef INLINE_SYSCALL #define INLINE_SYSCALL(name, nr, args...) \ ({ \ + unsigned long resultvar = INTERNAL_SYSCALL (name, nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (resultvar)); \ + resultvar = (unsigned long) -1; \ + } \ + (long) resultvar; }) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, nr, args...) \ + ({ \ unsigned long resultvar; \ LOAD_ARGS_##nr (args) \ asm volatile ( \ @@ -193,13 +204,14 @@ "syscall\n\t" \ : "=a" (resultvar) \ : "i" (__NR_##name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \ - if (resultvar >= (unsigned long) -4095) \ - { \ - __set_errno (-resultvar); \ - resultvar = (unsigned long) -1; \ - } \ (long) resultvar; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val) ((unsigned long) (val) >= -4095L) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val) (-(val)) + #define LOAD_ARGS_0() #define ASM_ARGS_0 -- cgit v1.1