summaryrefslogtreecommitdiff
path: root/libpthread
diff options
context:
space:
mode:
Diffstat (limited to 'libpthread')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep.h259
-rw-r--r--libpthread/nptl/sysdeps/x86_64/sysdep.h114
2 files changed, 0 insertions, 373 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep.h
deleted file mode 100644
index fe92a8ab5..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ /dev/null
@@ -1,259 +0,0 @@
-/* Copyright (C) 2001-2005, 2007 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. */
-
-#ifndef _LINUX_X86_64_SYSDEP_H
-#define _LINUX_X86_64_SYSDEP_H 1
-
-/* There is some commonality. */
-#include <sys/syscall.h>
-#include <sysdeps/i386/sysdep.h>
-
-#ifdef IS_IN_rtld
-# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
-#endif
-
-/* For Linux we can use the system call table in the header file
- /usr/include/asm/unistd.h
- of the kernel. But these symbols do not follow the SYS_* syntax
- so we have to redefine the `SYS_ify' macro here. */
-#undef SYS_ify
-#define SYS_ify(syscall_name) __NR_##syscall_name
-
-/* This is a kludge to make syscalls.list find these under the names
- pread and pwrite, since some kernel headers define those names
- and some define the *64 names for the same system calls. */
-#if !defined __NR_pread && defined __NR_pread64
-# define __NR_pread __NR_pread64
-#endif
-#if !defined __NR_pwrite && defined __NR_pwrite64
-# define __NR_pwrite __NR_pwrite64
-#endif
-
-/* This is to help the old kernel headers where __NR_semtimedop is not
- available. */
-#ifndef __NR_semtimedop
-# define __NR_semtimedop 220
-#endif
-
-
-#ifdef __ASSEMBLER__
-
-/* Linux uses a negative return value to indicate syscall errors,
- unlike most Unices, which use the condition codes' carry flag.
-
- Since version 2.1 the return value of a system call might be
- negative even if the call succeeded. E.g., the `lseek' system call
- might return a large offset. Therefore we must not anymore test
- for < 0, but test for a real error by making sure the value in %eax
- is a real error number. Linus said he will make sure the no syscall
- returns a value in -1 .. -4095 as a valid result so we can savely
- test with -4095. */
-
-/* We don't want the label for the error handle to be global when we define
- it here. */
-# ifdef __PIC__
-# define SYSCALL_ERROR_LABEL 0f
-# else
-# define SYSCALL_ERROR_LABEL syscall_error
-# endif
-
-# undef PSEUDO
-# define PSEUDO(name, syscall_name, args) \
- .text; \
- ENTRY (name) \
- DO_CALL (syscall_name, args); \
- cmpq $-4095, %rax; \
- jae SYSCALL_ERROR_LABEL; \
- L(pseudo_end):
-
-# undef PSEUDO_END
-# define PSEUDO_END(name) \
- SYSCALL_ERROR_HANDLER \
- END (name)
-
-# undef PSEUDO_NOERRNO
-# define PSEUDO_NOERRNO(name, syscall_name, args) \
- .text; \
- ENTRY (name) \
- DO_CALL (syscall_name, args)
-
-# undef PSEUDO_END_NOERRNO
-# define PSEUDO_END_NOERRNO(name) \
- END (name)
-
-# define ret_NOERRNO ret
-
-# undef PSEUDO_ERRVAL
-# define PSEUDO_ERRVAL(name, syscall_name, args) \
- .text; \
- ENTRY (name) \
- DO_CALL (syscall_name, args); \
- negq %rax
-
-# undef PSEUDO_END_ERRVAL
-# define PSEUDO_END_ERRVAL(name) \
- END (name)
-
-# define ret_ERRVAL ret
-
-# ifndef __PIC__
-# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
-# elif defined(RTLD_PRIVATE_ERRNO)
-# define SYSCALL_ERROR_HANDLER \
-0: \
- leaq rtld_errno(%rip), %rcx; \
- xorl %edx, %edx; \
- subq %rax, %rdx; \
- movl %edx, (%rcx); \
- orq $-1, %rax; \
- jmp L(pseudo_end);
-# elif USE___THREAD
-# ifndef NOT_IN_libc
-# define SYSCALL_ERROR_ERRNO __libc_errno
-# else
-# define SYSCALL_ERROR_ERRNO errno
-# endif
-# define SYSCALL_ERROR_HANDLER \
-0: \
- movq SYSCALL_ERROR_ERRNO@GOTTPOFF(%rip), %rcx;\
- xorl %edx, %edx; \
- subq %rax, %rdx; \
- movl %edx, %fs:(%rcx); \
- orq $-1, %rax; \
- jmp L(pseudo_end);
-# elif defined _LIBC_REENTRANT
-/* Store (- %rax) into errno through the GOT.
- Note that errno occupies only 4 bytes. */
-# define SYSCALL_ERROR_HANDLER \
-0: \
- xorl %edx, %edx; \
- subq %rax, %rdx; \
- pushq %rdx; \
- cfi_adjust_cfa_offset(8); \
- call __errno_location@PLT; \
- popq %rdx; \
- cfi_adjust_cfa_offset(-8); \
- movl %edx, (%rax); \
- orq $-1, %rax; \
- jmp L(pseudo_end);
-
-/* A quick note: it is assumed that the call to `__errno_location' does
- not modify the stack! */
-# else /* Not _LIBC_REENTRANT. */
-# define SYSCALL_ERROR_HANDLER \
-0:movq errno@GOTPCREL(%RIP), %rcx; \
- xorl %edx, %edx; \
- subq %rax, %rdx; \
- movl %edx, (%rcx); \
- orq $-1, %rax; \
- jmp L(pseudo_end);
-# endif /* __PIC__ */
-
-/* The Linux/x86-64 kernel expects the system call parameters in
- registers according to the following table:
-
- syscall number rax
- arg 1 rdi
- arg 2 rsi
- arg 3 rdx
- arg 4 r10
- arg 5 r8
- arg 6 r9
-
- The Linux kernel uses and destroys internally these registers:
- return address from
- syscall rcx
- eflags from syscall r11
-
- Normal function call, including calls to the system call stub
- functions in the libc, get the first six parameters passed in
- registers and the seventh parameter and later on the stack. The
- register use is as follows:
-
- system call number in the DO_CALL macro
- arg 1 rdi
- arg 2 rsi
- arg 3 rdx
- arg 4 rcx
- arg 5 r8
- arg 6 r9
-
- We have to take care that the stack is aligned to 16 bytes. When
- called the stack is not aligned since the return address has just
- been pushed.
-
-
- Syscalls of more than 6 arguments are not supported. */
-
-# undef DO_CALL
-# define DO_CALL(syscall_name, args) \
- DOARGS_##args \
- movl $SYS_ify (syscall_name), %eax; \
- syscall;
-
-# define DOARGS_0 /* nothing */
-# define DOARGS_1 /* nothing */
-# define DOARGS_2 /* nothing */
-# define DOARGS_3 /* nothing */
-# define DOARGS_4 movq %rcx, %r10;
-# define DOARGS_5 DOARGS_4
-# define DOARGS_6 DOARGS_5
-
-#endif /* __ASSEMBLER__ */
-
-
-/* Pointer mangling support. */
-#if defined NOT_IN_libc && defined IS_IN_rtld
-/* We cannot use the thread descriptor because in ld.so we use setjmp
- earlier than the descriptor is initialized. */
-# ifdef __ASSEMBLER__
-# define PTR_MANGLE(reg) xorq __pointer_chk_guard_local(%rip), reg; \
- rolq $17, reg
-# define PTR_DEMANGLE(reg) rorq $17, reg; \
- xorq __pointer_chk_guard_local(%rip), reg
-# else
-# define PTR_MANGLE(reg) asm ("xorq __pointer_chk_guard_local(%%rip), %0\n" \
- "rolq $17, %0" \
- : "=r" (reg) : "0" (reg))
-# define PTR_DEMANGLE(reg) asm ("rorq $17, %0\n" \
- "xorq __pointer_chk_guard_local(%%rip), %0" \
- : "=r" (reg) : "0" (reg))
-# endif
-#else
-# ifdef __ASSEMBLER__
-# define PTR_MANGLE(reg) xorq %fs:POINTER_GUARD, reg; \
- rolq $17, reg
-# define PTR_DEMANGLE(reg) rorq $17, reg; \
- xorq %fs:POINTER_GUARD, reg
-# else
-# define PTR_MANGLE(var) asm ("xorq %%fs:%c2, %0\n" \
- "rolq $17, %0" \
- : "=r" (var) \
- : "0" (var), \
- "i" (offsetof (tcbhead_t, \
- pointer_guard)))
-# define PTR_DEMANGLE(var) asm ("rorq $17, %0\n" \
- "xorq %%fs:%c2, %0" \
- : "=r" (var) \
- : "0" (var), \
- "i" (offsetof (tcbhead_t, \
- pointer_guard)))
-# endif
-#endif
-
-#endif /* linux/x86_64/sysdep.h */
diff --git a/libpthread/nptl/sysdeps/x86_64/sysdep.h b/libpthread/nptl/sysdeps/x86_64/sysdep.h
deleted file mode 100644
index 350e3b5e2..000000000
--- a/libpthread/nptl/sysdeps/x86_64/sysdep.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* Assembler macros for x86-64.
- Copyright (C) 2001, 2002, 2003 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 <common/sysdep.h>
-
-#ifdef __ASSEMBLER__
-
-/* Syntactic details of assembler. */
-
-#ifdef HAVE_ELF
-
-/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
-#define ALIGNARG(log2) 1<<log2
-/* For ELF we need the `.type' directive to make shared libs work right. */
-#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
-#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
-
-/* In ELF C symbols are asm symbols. */
-#undef NO_UNDERSCORES
-#define NO_UNDERSCORES
-
-#else
-
-#define ALIGNARG(log2) log2
-#define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */
-#define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */
-
-#endif
-
-
-/* Define an entry point visible from C. */
-#define ENTRY(name) \
- ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
- ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \
- .align ALIGNARG(4); \
- C_LABEL(name) \
- cfi_startproc; \
- CALL_MCOUNT
-
-#undef END
-#define END(name) \
- cfi_endproc; \
- ASM_SIZE_DIRECTIVE(name)
-
-/* If compiled for profiling, call `mcount' at the start of each function. */
-#ifdef PROF
-/* The mcount code relies on a normal frame pointer being on the stack
- to locate our caller, so push one just for its benefit. */
-#define CALL_MCOUNT \
- pushq %rbp; \
- cfi_adjust_cfa_offset(8); \
- movq %rsp, %rbp; \
- cfi_def_cfa_register(%rbp); \
- call JUMPTARGET(mcount); \
- popq %rbp; \
- cfi_def_cfa(rsp,8);
-#else
-#define CALL_MCOUNT /* Do nothing. */
-#endif
-
-#ifdef NO_UNDERSCORES
-/* Since C identifiers are not normally prefixed with an underscore
- on this system, the asm identifier `syscall_error' intrudes on the
- C name space. Make sure we use an innocuous name. */
-#define syscall_error __syscall_error
-#define mcount _mcount
-#endif
-
-#define PSEUDO(name, syscall_name, args) \
-lose: \
- jmp JUMPTARGET(syscall_error) \
- .globl syscall_error; \
- ENTRY (name) \
- DO_CALL (syscall_name, args); \
- jb lose
-
-#undef PSEUDO_END
-#define PSEUDO_END(name) \
- END (name)
-
-#undef JUMPTARGET
-#ifdef __PIC__
-#define JUMPTARGET(name) name##@PLT
-#else
-#define JUMPTARGET(name) name
-#endif
-
-/* Local label name for asm code. */
-#ifndef L
-# ifdef HAVE_ELF
-/* ELF-like local names start with `.L'. */
-# define L(name) .L##name
-# else
-# define L(name) name
-# endif
-#endif
-
-#endif /* __ASSEMBLER__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 01:34:01 +0000