Ruben Ayrapetyan
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ASM_X64_H
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#define ASM_X64_H
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/*
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* mov syscall_no (%rdi) -> %rax
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* mov arg1 (%rsi) -> %rdi
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* syscall
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*/
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#define SYSCALL_1 \
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mov %rdi, %rax; \
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mov %rsi, %rdi; \
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syscall; \
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ret;
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/*
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* mov syscall_no (%rdi) -> %rax
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* mov arg1 (%rsi) -> %rdi
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* mov arg2 (%rdx) -> %rsi
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* syscall
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*/
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#define SYSCALL_2 \
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mov %rdi, %rax; \
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mov %rsi, %rdi; \
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mov %rdx, %rsi; \
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syscall; \
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ret;
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/*
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* mov syscall_no (%rdi) -> %rax
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* mov arg1 (%rsi) -> %rdi
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* mov arg2 (%rdx) -> %rsi
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* mov arg3 (%rcx) -> %rdx
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* syscall
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*/
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#define SYSCALL_3 \
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mov %rdi, %rax; \
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mov %rsi, %rdi; \
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mov %rdx, %rsi; \
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mov %rcx, %rdx; \
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syscall; \
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ret;
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#define _START \
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mov (%rsp), %rdi; \
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mov %rsp, %rsi; \
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add $8, %rsi; \
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callq main; \
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\
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mov %rax, %rdi; \
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callq exit; \
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1: \
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jmp 1b
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#endif /* !ASM_X64_H */
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