From: Richard Henderson Date: Thu, 16 Feb 2012 00:06:17 +0000 (-0800) Subject: alpha: Do signed promotion of 32-bit arguments to syscalls X-Git-Tag: glibc-2.16-ports-before-merge~261 X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=f0a81bf387d3ac69da3b1087f31d292fbed68912;p=glibc.git alpha: Do signed promotion of 32-bit arguments to syscalls --- diff --git a/ChangeLog.alpha b/ChangeLog.alpha index eb5544cbb3..912fe332db 100644 --- a/ChangeLog.alpha +++ b/ChangeLog.alpha @@ -1,6 +1,15 @@ 2012-02-15 Richard Henderson - * sysdeps/unux/alpha/sysdep.h: Don't include + * sysdeps/unix/alpha/sysdep.h (syscall_promote): New. + (inline_syscall0, inline_syscall1, inline_syscall2, + inline_syscall3, inline_syscall4, inline_syscall5, + inline_syscall6): Use it. + * sysdeps/unix/sysv/linux/alpha/setregid.c: Remove. + * sysdeps/unix/sysv/linux/alpha/setreuid.c: Remove. + * sysdeps/unix/sysv/linux/alpha/setresgid.c: Remove. + * sysdeps/unix/sysv/linux/alpha/setresuid.c: Remove. + + * sysdeps/unix/alpha/sysdep.h: Don't include [PIC] (SYSCALL_ERROR_HANDLER): Emit nothing. [PIC] (SYSCALL_ERROR_LABEL): Add !samegp markup. diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h index e82784225b..c3f5920ad0 100644 --- a/sysdeps/unix/alpha/sysdep.h +++ b/sysdeps/unix/alpha/sysdep.h @@ -190,6 +190,12 @@ __LABEL(name) \ #define INTERNAL_SYSCALL_DECL(err) \ long int err __attribute__((unused)) +/* The normal Alpha calling convention sign-extends 32-bit quantties + no matter what the "real" sign of the 32-bit type. We want to + preserve that when filling in values for the kernel. */ +#define syscall_promote(arg) \ + (sizeof(arg) == 4 ? (long)(int)(long)(arg) : (long)(arg)) + /* Make sure and "use" the variable that we're not returning, in order to suppress unused variable warnings. */ #define INTERNAL_SYSCALL_ERROR_P(val, err) ((void)val, err) @@ -205,172 +211,126 @@ __LABEL(name) \ #define inline_syscall0(name, args...) \ { \ - register long _sc_0; \ register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = name; \ + register long _sc_0 = name; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2" \ - : "=v"(_sc_0), "=r"(_sc_19) \ - : "0"(_sc_0) \ - : inline_syscall_clobbers, \ + : "+v"(_sc_0), "=r"(_sc_19) \ + : : inline_syscall_clobbers, \ "$16", "$17", "$18", "$20", "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall1(name,arg1) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ register long _sc_19 __asm__("$19"); \ - register long _tmp_16 = (long) (arg1); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3" \ - : "=v"(_sc_0), "=r"(_sc_19), "=r"(_sc_16) \ - : "0"(_sc_0), "2"(_sc_16) \ - : inline_syscall_clobbers, \ + : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16) \ + : : inline_syscall_clobbers, \ "$17", "$18", "$20", "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall2(name,arg1,arg2) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _tmp_17 = syscall_promote (arg2); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ + register long _sc_17 __asm__("$17") = _tmp_17; \ register long _sc_19 __asm__("$19"); \ - register long _tmp_16 = (long) (arg1); \ - register long _tmp_17 = (long) (arg2); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ - _sc_17 = _tmp_17; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4" \ - : "=v"(_sc_0), "=r"(_sc_19), \ - "=r"(_sc_16), "=r"(_sc_17) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \ - : inline_syscall_clobbers, \ + : "+v"(_sc_0), "=r"(_sc_19), \ + "+r"(_sc_16), "+r"(_sc_17) \ + : : inline_syscall_clobbers, \ "$18", "$20", "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall3(name,arg1,arg2,arg3) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _tmp_17 = syscall_promote (arg2); \ + register long _tmp_18 = syscall_promote (arg3); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ + register long _sc_17 __asm__("$17") = _tmp_17; \ + register long _sc_18 __asm__("$18") = _tmp_18; \ register long _sc_19 __asm__("$19"); \ - register long _tmp_16 = (long) (arg1); \ - register long _tmp_17 = (long) (arg2); \ - register long _tmp_18 = (long) (arg3); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ - _sc_17 = _tmp_17; \ - _sc_18 = _tmp_18; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5" \ - : "=v"(_sc_0), "=r"(_sc_19), "=r"(_sc_16), \ - "=r"(_sc_17), "=r"(_sc_18) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18) \ - : inline_syscall_clobbers, "$20", "$21"); \ + : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16), \ + "+r"(_sc_17), "+r"(_sc_18) \ + : : inline_syscall_clobbers, "$20", "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall4(name,arg1,arg2,arg3,arg4) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - register long _tmp_16 = (long) (arg1); \ - register long _tmp_17 = (long) (arg2); \ - register long _tmp_18 = (long) (arg3); \ - register long _tmp_19 = (long) (arg4); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ - _sc_17 = _tmp_17; \ - _sc_18 = _tmp_18; \ - _sc_19 = _tmp_19; \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _tmp_17 = syscall_promote (arg2); \ + register long _tmp_18 = syscall_promote (arg3); \ + register long _tmp_19 = syscall_promote (arg4); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ + register long _sc_17 __asm__("$17") = _tmp_17; \ + register long _sc_18 __asm__("$18") = _tmp_18; \ + register long _sc_19 __asm__("$19") = _tmp_19; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6" \ - : "=v"(_sc_0), "=r"(_sc_19), "=r"(_sc_16), \ - "=r"(_sc_17), "=r"(_sc_18) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18), "1"(_sc_19) \ - : inline_syscall_clobbers, "$20", "$21"); \ + : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \ + "+r"(_sc_17), "+r"(_sc_18) \ + : : inline_syscall_clobbers, "$20", "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - register long _sc_20 __asm__("$20"); \ - register long _tmp_16 = (long) (arg1); \ - register long _tmp_17 = (long) (arg2); \ - register long _tmp_18 = (long) (arg3); \ - register long _tmp_19 = (long) (arg4); \ - register long _tmp_20 = (long) (arg5); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ - _sc_17 = _tmp_17; \ - _sc_18 = _tmp_18; \ - _sc_19 = _tmp_19; \ - _sc_20 = _tmp_20; \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _tmp_17 = syscall_promote (arg2); \ + register long _tmp_18 = syscall_promote (arg3); \ + register long _tmp_19 = syscall_promote (arg4); \ + register long _tmp_20 = syscall_promote (arg5); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ + register long _sc_17 __asm__("$17") = _tmp_17; \ + register long _sc_18 __asm__("$18") = _tmp_18; \ + register long _sc_19 __asm__("$19") = _tmp_19; \ + register long _sc_20 __asm__("$20") = _tmp_20; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \ - : "=v"(_sc_0), "=r"(_sc_19), "=r"(_sc_16), \ - "=r"(_sc_17), "=r"(_sc_18), "=r"(_sc_20) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18), "1"(_sc_19), "5"(_sc_20) \ - : inline_syscall_clobbers, "$21"); \ + : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \ + "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20) \ + : : inline_syscall_clobbers, "$21"); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } #define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \ { \ - register long _sc_0; \ - register long _sc_16 __asm__("$16"); \ - register long _sc_17 __asm__("$17"); \ - register long _sc_18 __asm__("$18"); \ - register long _sc_19 __asm__("$19"); \ - register long _sc_20 __asm__("$20"); \ - register long _sc_21 __asm__("$21"); \ - register long _tmp_16 = (long) (arg1); \ - register long _tmp_17 = (long) (arg2); \ - register long _tmp_18 = (long) (arg3); \ - register long _tmp_19 = (long) (arg4); \ - register long _tmp_20 = (long) (arg5); \ - register long _tmp_21 = (long) (arg6); \ - \ - _sc_0 = name; \ - _sc_16 = _tmp_16; \ - _sc_17 = _tmp_17; \ - _sc_18 = _tmp_18; \ - _sc_19 = _tmp_19; \ - _sc_20 = _tmp_20; \ - _sc_21 = _tmp_21; \ + register long _tmp_16 = syscall_promote (arg1); \ + register long _tmp_17 = syscall_promote (arg2); \ + register long _tmp_18 = syscall_promote (arg3); \ + register long _tmp_19 = syscall_promote (arg4); \ + register long _tmp_20 = syscall_promote (arg5); \ + register long _tmp_21 = syscall_promote (arg6); \ + register long _sc_0 = name; \ + register long _sc_16 __asm__("$16") = _tmp_16; \ + register long _sc_17 __asm__("$17") = _tmp_17; \ + register long _sc_18 __asm__("$18") = _tmp_18; \ + register long _sc_19 __asm__("$19") = _tmp_19; \ + register long _sc_20 __asm__("$20") = _tmp_20; \ + register long _sc_21 __asm__("$21") = _tmp_21; \ __asm__ __volatile__ \ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \ - : "=v"(_sc_0), "=r"(_sc_19), "=r"(_sc_16), \ - "=r"(_sc_17), "=r"(_sc_18), "=r"(_sc_20), \ - "=r"(_sc_21) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), "4"(_sc_18), \ - "1"(_sc_19), "5"(_sc_20), "6"(_sc_21) \ - : inline_syscall_clobbers); \ + : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16), \ + "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20), \ + "+r"(_sc_21) \ + : : inline_syscall_clobbers); \ _sc_ret = _sc_0, _sc_err = _sc_19; \ } diff --git a/sysdeps/unix/sysv/linux/alpha/setregid.c b/sysdeps/unix/sysv/linux/alpha/setregid.c deleted file mode 100644 index 0973fe4ac1..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/setregid.c +++ /dev/null @@ -1,31 +0,0 @@ -/* Copyright (C) 1998, 2000, 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 -#include - - -int -__setregid (gid_t rgid, gid_t egid) -{ - return INLINE_SETXID_SYSCALL (setregid, 2, (int) rgid, (int) egid); -} -#ifndef __setregid -weak_alias (__setregid, setregid) -#endif diff --git a/sysdeps/unix/sysv/linux/alpha/setresgid.c b/sysdeps/unix/sysv/linux/alpha/setresgid.c deleted file mode 100644 index 50e29e3c76..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/setresgid.c +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 1998, 2000, 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 -#include - - -int -__setresgid (gid_t rgid, gid_t egid, gid_t sgid) -{ - return INLINE_SETXID_SYSCALL (setresgid, 3, (int) rgid, - (int) egid, (int) sgid); -} -libc_hidden_def (__setresgid) -#ifndef __setresgid -weak_alias (__setresgid, setresgid) -#endif diff --git a/sysdeps/unix/sysv/linux/alpha/setresuid.c b/sysdeps/unix/sysv/linux/alpha/setresuid.c deleted file mode 100644 index e76413bf6a..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/setresuid.c +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 1998, 2000, 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 -#include - - -int -__setresuid (uid_t ruid, uid_t euid, uid_t suid) -{ - return INLINE_SETXID_SYSCALL (setresuid, 3, (int) ruid, - (int) euid, (int) suid); -} -libc_hidden_def (__setresuid) -#ifndef __setresuid -weak_alias (__setresuid, setresuid) -#endif diff --git a/sysdeps/unix/sysv/linux/alpha/setreuid.c b/sysdeps/unix/sysv/linux/alpha/setreuid.c deleted file mode 100644 index a23a34792e..0000000000 --- a/sysdeps/unix/sysv/linux/alpha/setreuid.c +++ /dev/null @@ -1,31 +0,0 @@ -/* Copyright (C) 1998, 2000, 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 -#include - - -int -__setreuid (uid_t ruid, uid_t euid) -{ - return INLINE_SETXID_SYSCALL (setreuid, 2, (int) ruid, (int) euid); -} -#ifndef __setreuid -weak_alias (__setreuid, setreuid) -#endif