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-rw-r--r--tools/include/nolibc/arch-x86_64.h215
1 files changed, 0 insertions, 215 deletions
diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h
deleted file mode 100644
index 0e1e9eb8545d..000000000000
--- a/tools/include/nolibc/arch-x86_64.h
+++ /dev/null
@@ -1,215 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
-/*
- * x86_64 specific definitions for NOLIBC
- * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
- */
-
-#ifndef _NOLIBC_ARCH_X86_64_H
-#define _NOLIBC_ARCH_X86_64_H
-
-/* O_* macros for fcntl/open are architecture-specific */
-#define O_RDONLY 0
-#define O_WRONLY 1
-#define O_RDWR 2
-#define O_CREAT 0x40
-#define O_EXCL 0x80
-#define O_NOCTTY 0x100
-#define O_TRUNC 0x200
-#define O_APPEND 0x400
-#define O_NONBLOCK 0x800
-#define O_DIRECTORY 0x10000
-
-/* The struct returned by the stat() syscall, equivalent to stat64(). The
- * syscall returns 116 bytes and stops in the middle of __unused.
- */
-struct sys_stat_struct {
- unsigned long st_dev;
- unsigned long st_ino;
- unsigned long st_nlink;
- unsigned int st_mode;
- unsigned int st_uid;
-
- unsigned int st_gid;
- unsigned int __pad0;
- unsigned long st_rdev;
- long st_size;
- long st_blksize;
-
- long st_blocks;
- unsigned long st_atime;
- unsigned long st_atime_nsec;
- unsigned long st_mtime;
-
- unsigned long st_mtime_nsec;
- unsigned long st_ctime;
- unsigned long st_ctime_nsec;
- long __unused[3];
-};
-
-/* Syscalls for x86_64 :
- * - registers are 64-bit
- * - syscall number is passed in rax
- * - arguments are in rdi, rsi, rdx, r10, r8, r9 respectively
- * - the system call is performed by calling the syscall instruction
- * - syscall return comes in rax
- * - rcx and r11 are clobbered, others are preserved.
- * - the arguments are cast to long and assigned into the target registers
- * which are then simply passed as registers to the asm code, so that we
- * don't have to experience issues with register constraints.
- * - the syscall number is always specified last in order to allow to force
- * some registers before (gcc refuses a %-register at the last position).
- * - see also x86-64 ABI section A.2 AMD64 Linux Kernel Conventions, A.2.1
- * Calling Conventions.
- *
- * Link x86-64 ABI: https://gitlab.com/x86-psABIs/x86-64-ABI/-/wikis/home
- *
- */
-
-#define my_syscall0(num) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall1(num, arg1) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), \
- "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall2(num, arg1, arg2) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- register long _arg2 __asm__ ("rsi") = (long)(arg2); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), "r"(_arg2), \
- "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall3(num, arg1, arg2, arg3) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- register long _arg2 __asm__ ("rsi") = (long)(arg2); \
- register long _arg3 __asm__ ("rdx") = (long)(arg3); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), "r"(_arg2), "r"(_arg3), \
- "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall4(num, arg1, arg2, arg3, arg4) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- register long _arg2 __asm__ ("rsi") = (long)(arg2); \
- register long _arg3 __asm__ ("rdx") = (long)(arg3); \
- register long _arg4 __asm__ ("r10") = (long)(arg4); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), \
- "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall5(num, arg1, arg2, arg3, arg4, arg5) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- register long _arg2 __asm__ ("rsi") = (long)(arg2); \
- register long _arg3 __asm__ ("rdx") = (long)(arg3); \
- register long _arg4 __asm__ ("r10") = (long)(arg4); \
- register long _arg5 __asm__ ("r8") = (long)(arg5); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), \
- "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6) \
-({ \
- long _ret; \
- register long _num __asm__ ("rax") = (num); \
- register long _arg1 __asm__ ("rdi") = (long)(arg1); \
- register long _arg2 __asm__ ("rsi") = (long)(arg2); \
- register long _arg3 __asm__ ("rdx") = (long)(arg3); \
- register long _arg4 __asm__ ("r10") = (long)(arg4); \
- register long _arg5 __asm__ ("r8") = (long)(arg5); \
- register long _arg6 __asm__ ("r9") = (long)(arg6); \
- \
- __asm__ volatile ( \
- "syscall\n" \
- : "=a"(_ret) \
- : "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), \
- "r"(_arg6), "0"(_num) \
- : "rcx", "r11", "memory", "cc" \
- ); \
- _ret; \
-})
-
-/* startup code */
-/*
- * x86-64 System V ABI mandates:
- * 1) %rsp must be 16-byte aligned right before the function call.
- * 2) The deepest stack frame should be zero (the %rbp).
- *
- */
-__asm__ (".section .text\n"
- ".weak _start\n"
- "_start:\n"
- "pop %rdi\n" // argc (first arg, %rdi)
- "mov %rsp, %rsi\n" // argv[] (second arg, %rsi)
- "lea 8(%rsi,%rdi,8),%rdx\n" // then a NULL then envp (third arg, %rdx)
- "xor %ebp, %ebp\n" // zero the stack frame
- "and $-16, %rsp\n" // x86 ABI : esp must be 16-byte aligned before call
- "call main\n" // main() returns the status code, we'll exit with it.
- "mov %eax, %edi\n" // retrieve exit code (32 bit)
- "mov $60, %eax\n" // NR_exit == 60
- "syscall\n" // really exit
- "hlt\n" // ensure it does not return
- "");
-
-#endif // _NOLIBC_ARCH_X86_64_H
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