--- /dev/null
+/* Copyright (C) 2016 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>
+
+ENTRY(execl)
+ /* Move return address into a register. */
+ pop %rax
+ cfi_adjust_cfa_offset(-8)
+ cfi_register(%rip, %rax)
+
+ /* Save the arguments in registers. Stop as soon as we detect
+ the NULL terminator, as if we find one, we do not want to fall
+ into the on-stack conversion loop. */
+ sub $24, %esp
+ cfi_adjust_cfa_offset(24)
+
+ mov %edi, 4(%rsp) /* argv[0] must be non-null. */
+
+ mov %edx, 8(%rsp)
+ test %edx, %edx
+ jz 9f
+
+ mov %ecx, 12(%rsp)
+ test %ecx, %ecx
+ jz 9f
+
+ mov %r8d, 16(%rsp)
+ test %r8d, %r8d
+ jz 9f
+
+ mov %r9d, 20(%rsp)
+ test %r9d, %r9d
+ jz 9f
+
+ /* Convert the on-stack pointer arguments to in-place
+ from a 64-bit padded array into a 32-bit packed array.
+ Note that this is memory is callee owned. */
+ xor %ecx, %ecx
+1: mov 24(%rsp, %rcx, 8), %edx
+ mov %edx, 24(%rsp, %rcx, 4)
+ inc %ecx
+ test %edx, %edx
+ jnz 1b
+
+9:
+ /* Restore return address to the stack. */
+ push %rax
+ cfi_adjust_cfa_offset(8)
+ cfi_rel_offset(%rip, 0)
+
+ /* Load __environ for the env parameter. */
+#ifdef PIC
+ mov __environ@GOTPCREL(%rip), %edx
+ mov (%rdx), %edx
+#else
+ mov __environ(%rip), %edx
+#endif
+
+ /* Load argv parameter. Note that path (esi) is already loaded. */
+ lea 12(%rsp), %edi
+
+ DO_CALL (execve, 3)
+
+ /* All returns are errors. */
+ SYSCALL_SET_ERRNO
+ or $-1, %rax
+
+ /* Pop all of the extra stack space in one go. */
+ ret $24
+
+END(execl)
+
+libc_hidden_def (execl)
--- /dev/null
+/* Copyright (C) 2016 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>
+
+ENTRY(execle)
+ /* Move return address into a register. */
+ pop %rax
+ cfi_adjust_cfa_offset(-8)
+ cfi_register(%rip, %rax)
+
+ /* Save the arguments in registers. Stop as soon as we detect
+ the NULL terminator, as if we find one, we do not want to fall
+ into the on-stack conversion loop. Move the potential ENV
+ parameter in place in EDX on each exit path. */
+ sub $24, %esp
+ cfi_adjust_cfa_offset(24)
+
+ mov %edi, 4(%rsp) /* argv[0] must be non-null. */
+
+ mov %edx, 8(%rsp)
+ test %edx, %edx
+ mov %ecx, %edx
+ jz 9f
+
+ mov %ecx, 12(%rsp)
+ test %ecx, %ecx
+ mov %r8d, %edx
+ jz 9f
+
+ mov %r8d, 16(%rsp)
+ test %r8d, %r8d
+ mov %r9d, %edx
+ jz 9f
+
+ mov %r9d, 20(%rsp)
+ test %r9d, %r9d
+ mov 24(%rsp), %edx
+ jz 9f
+
+ /* Convert the on-stack pointer arguments to in-place
+ from a 64-bit padded array into a 32-bit packed array.
+ Note that this is memory is callee owned, and that this
+ loop exits with the ENV parameter loaded in EDX. */
+ xor %ecx, %ecx
+ mov 24(%rsp, %rcx, 8), %edx
+1: mov %edx, 24(%rsp, %rcx, 4)
+ inc %ecx
+ test %edx, %edx
+ mov 24(%rsp, %rcx, 8), %edx
+ jnz 1b
+
+9:
+ /* Restore return address to the stack. */
+ push %rax
+ cfi_adjust_cfa_offset(8)
+ cfi_rel_offset(%rip, 0)
+
+ /* Load argv parameter. Note that path (esi) is already loaded. */
+ lea 12(%rsp), %edi
+
+ DO_CALL (execve, 3)
+
+ /* All returns are errors. */
+ SYSCALL_SET_ERRNO
+ or $-1, %rax
+
+ /* Pop all of the extra stack space in one go. */
+ ret $24
+
+END(execle)
+
+libc_hidden_def (execle)
--- /dev/null
+/* Copyright (C) 2016 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>
+
+ENTRY(execlp)
+ /* Move return address into a register. */
+ pop %rax
+ cfi_adjust_cfa_offset(-8)
+ cfi_register(%rip, %rax)
+
+ /* Save the arguments in registers. Stop as soon as we detect
+ the NULL terminator, as if we find one, we do not want to fall
+ into the on-stack conversion loop. */
+ sub $24, %esp
+ cfi_adjust_cfa_offset(24)
+
+ mov %edi, 4(%rsp) /* argv[0] must be non-null. */
+
+ mov %edx, 8(%rsp)
+ test %edx, %edx
+ jz 9f
+
+ mov %ecx, 12(%rsp)
+ test %ecx, %ecx
+ jz 9f
+
+ mov %r8d, 16(%rsp)
+ test %r8d, %r8d
+ jz 9f
+
+ mov %r9d, 20(%rsp)
+ test %r9d, %r9d
+ jz 9f
+
+ /* Convert the on-stack pointer arguments to in-place
+ from a 64-bit padded array into a 32-bit packed array.
+ Note that this is memory is callee owned. */
+ xor %ecx, %ecx
+1: mov 24(%rsp, %rcx, 8), %edx
+ mov %edx, 24(%rsp, %rcx, 4)
+ inc %ecx
+ test %edx, %edx
+ jnz 1b
+
+9:
+ /* Restore return address to the stack. */
+ push %rax
+ cfi_adjust_cfa_offset(8)
+ cfi_rel_offset(%rip, 0)
+
+ /* Load argv parameter. Note that path (esi) is already loaded. */
+ lea 12(%rsp), %edi
+
+ call HIDDEN_JUMPTARGET (execvp)
+
+ /* Pop all of the extra stack space in one go. */
+ ret $24
+
+END(execlp)
+
+libc_hidden_def (execlp)
projects / thirdparty / glibc.git / commitdiff
