mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-22 07:57:39 +00:00
Add the generic syscall function
This commit is contained in:
topjohnwu
parent
66cee19cea
commit
e0cbe28711
@ -13,6 +13,7 @@ LOCAL_SRC_FILES := \
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nolibc.c \
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stdio.c \
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syscall.c \
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syscall/syscall-$(TARGET_ARCH).S \
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tinystdio/tinystdio.c
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include $(BUILD_STATIC_LIBRARY)
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@ -9,3 +9,8 @@ static int g_errno = 0;
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int *__errno(void) {
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return &g_errno;
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}
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long __set_errno_internal(int n) {
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g_errno = n;
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return -1;
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}
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115
native/src/crt0/syscall/private/bionic_asm.h
Normal file
115
native/src/crt0/syscall/private/bionic_asm.h
Normal file
@ -0,0 +1,115 @@
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/*
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* Copyright (C) 2013 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
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||||
* * Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#define __ASSEMBLY__
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/* https://github.com/android/ndk/issues/1422 */
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#include <features.h>
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#include <asm/unistd.h> /* For system call numbers. */
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#define MAX_ERRNO 4095 /* For recognizing system call error returns. */
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#define __bionic_asm_custom_entry(f)
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#define __bionic_asm_custom_end(f)
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#define __bionic_asm_function_type @function
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#define __bionic_asm_custom_note_gnu_section()
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#if defined(__aarch64__)
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#include "bionic_asm_arm64.h"
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#elif defined(__arm__)
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#include "bionic_asm_arm.h"
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#elif defined(__i386__)
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#include "bionic_asm_x86.h"
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#elif defined(__riscv)
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#include "bionic_asm_riscv64.h"
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#elif defined(__x86_64__)
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#include "bionic_asm_x86_64.h"
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#endif
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// Starts a normal assembler routine.
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#define ENTRY(__f) __ENTRY_WITH_BINDING(__f, .globl)
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// Starts an assembler routine with hidden visibility.
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#define ENTRY_PRIVATE(__f) \
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__ENTRY_WITH_BINDING(__f, .globl); \
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.hidden __f;
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// Starts an assembler routine that's weak so native bridges can override it.
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#define ENTRY_WEAK_FOR_NATIVE_BRIDGE(__f) __ENTRY_WITH_BINDING(__f, .weak)
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// Starts an assembler routine with hidden visibility and no DWARF information.
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// Only used for internal functions passed via sa_restorer.
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// TODO: can't we just delete all those and let the kernel do its thing?
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#define ENTRY_NO_DWARF_PRIVATE(__f) \
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__ENTRY_NO_DWARF(__f, .globl); \
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.hidden __f;
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// (Implementation detail.)
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#define __ENTRY_NO_DWARF(__f, __binding) \
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.text; \
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__binding __f; \
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.balign __bionic_asm_align; \
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.type __f, __bionic_asm_function_type; \
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__f: \
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__bionic_asm_custom_entry(__f);
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// (Implementation detail.)
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#define __ENTRY_WITH_BINDING(__f, __binding) \
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__ENTRY_NO_DWARF(__f, __binding); \
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.cfi_startproc;
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// Ends a normal assembler routine.
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#define END(__f) \
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.cfi_endproc; \
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END_NO_DWARF(__f)
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// Ends an assembler routine with no DWARF information.
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// Only used for internal functions passed via sa_restorer.
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// TODO: can't we just delete all those and let the kernel do its thing?
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#define END_NO_DWARF(__f) \
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.size __f, .- __f; \
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__bionic_asm_custom_end(__f)
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// Creates an alias `alias` for the symbol `original`.
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#define ALIAS_SYMBOL(alias, original) \
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.globl alias; \
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.equ alias, original
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// Creates an alias `alias` for the symbol `original` that's weak so it can be
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// separately overridden by native bridges.
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#define ALIAS_SYMBOL_WEAK_FOR_NATIVE_BRIDGE(alias, original) \
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.weak alias; \
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.equ alias, original
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// Adds a GNU property ELF note. Important on arm64 to declare PAC/BTI support.
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#define NOTE_GNU_PROPERTY() __bionic_asm_custom_note_gnu_section()
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// Gives local labels a more convenient and readable syntax.
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#define L(__label) .L##__label
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48
native/src/crt0/syscall/private/bionic_asm_arm.h
Normal file
48
native/src/crt0/syscall/private/bionic_asm_arm.h
Normal file
@ -0,0 +1,48 @@
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/* $OpenBSD: asm.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
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/* $NetBSD: asm.h,v 1.4 2001/07/16 05:43:32 matt Exp $ */
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/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)asm.h 5.5 (Berkeley) 5/7/91
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*/
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#pragma once
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#define __bionic_asm_align 0
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#undef __bionic_asm_custom_entry
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#undef __bionic_asm_custom_end
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#define __bionic_asm_custom_entry(f) .fnstart
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#define __bionic_asm_custom_end(f) .fnend
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#undef __bionic_asm_function_type
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#define __bionic_asm_function_type #function
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79
native/src/crt0/syscall/private/bionic_asm_arm64.h
Normal file
79
native/src/crt0/syscall/private/bionic_asm_arm64.h
Normal file
@ -0,0 +1,79 @@
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/* $OpenBSD: asm.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
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/* $NetBSD: asm.h,v 1.4 2001/07/16 05:43:32 matt Exp $ */
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/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
|
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* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
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||||
*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)asm.h 5.5 (Berkeley) 5/7/91
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*/
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#pragma once
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#define __bionic_asm_align 16
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#undef __bionic_asm_function_type
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#define __bionic_asm_function_type %function
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#if defined(__ARM_FEATURE_BTI_DEFAULT)
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#define __bionic_asm_aarch64_feature_bti (1 << 0)
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#undef __bionic_asm_custom_entry
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#define __bionic_asm_custom_entry(f) bti c
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#else
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#define __bionic_asm_aarch64_feature_bti 0
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#endif
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#if defined(__ARM_FEATURE_PAC_DEFAULT)
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#define __bionic_asm_aarch64_feature_pac (1 << 1)
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#else
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#define __bionic_asm_aarch64_feature_pac 0
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#endif
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#undef __bionic_asm_custom_note_gnu_section
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#define __bionic_asm_custom_note_gnu_section() \
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.pushsection .note.gnu.property, "a"; \
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.balign 8; \
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.long 4; \
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.long 0x10; \
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.long 0x5; /* NT_GNU_PROPERTY_TYPE_0 */ \
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.asciz "GNU"; \
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.long 0xc0000000; /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */ \
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.long 4; \
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.long (__bionic_asm_aarch64_feature_pac | \
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__bionic_asm_aarch64_feature_bti); \
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.long 0; \
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.popsection;
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#define NT_MEMTAG_LEVEL_MASK 3
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#define NT_MEMTAG_LEVEL_NONE 0
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#define NT_MEMTAG_LEVEL_ASYNC 1
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#define NT_MEMTAG_LEVEL_SYNC 2
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#define NT_MEMTAG_HEAP 4
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#define NT_MEMTAG_STACK 8
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43
native/src/crt0/syscall/private/bionic_asm_riscv64.h
Normal file
43
native/src/crt0/syscall/private/bionic_asm_riscv64.h
Normal file
@ -0,0 +1,43 @@
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/* $OpenBSD: asm.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
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/* $NetBSD: asm.h,v 1.4 2001/07/16 05:43:32 matt Exp $ */
|
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|
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/*
|
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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||||
*
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||||
* This code is derived from software contributed to Berkeley by
|
||||
* William Jolitz.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)asm.h 5.5 (Berkeley) 5/7/91
|
||||
*/
|
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|
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#pragma once
|
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|
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#define __bionic_asm_align 16
|
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|
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#undef __bionic_asm_function_type
|
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#define __bionic_asm_function_type %function
|
||||
51
native/src/crt0/syscall/private/bionic_asm_x86.h
Normal file
51
native/src/crt0/syscall/private/bionic_asm_x86.h
Normal file
@ -0,0 +1,51 @@
|
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/* $NetBSD: asm.h,v 1.40 2011/06/16 13:16:20 joerg Exp $ */
|
||||
|
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/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* William Jolitz.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)asm.h 5.5 (Berkeley) 5/7/91
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#define PIC_PROLOGUE \
|
||||
pushl %ebx; \
|
||||
call 666f; \
|
||||
666: \
|
||||
popl %ebx; \
|
||||
addl $_GLOBAL_OFFSET_TABLE_+[.-666b], %ebx
|
||||
#define PIC_EPILOGUE \
|
||||
popl %ebx
|
||||
#define PIC_PLT(x) x@PLT
|
||||
#define PIC_GOT(x) x@GOT(%ebx)
|
||||
#define PIC_GOTOFF(x) x@GOTOFF(%ebx)
|
||||
|
||||
#define __bionic_asm_align 16
|
||||
42
native/src/crt0/syscall/private/bionic_asm_x86_64.h
Normal file
42
native/src/crt0/syscall/private/bionic_asm_x86_64.h
Normal file
@ -0,0 +1,42 @@
|
||||
/* $NetBSD: asm.h,v 1.18 2013/09/12 15:36:17 joerg Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* William Jolitz.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)asm.h 5.5 (Berkeley) 5/7/91
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#define PIC_PLT(x) x@PLT
|
||||
#define PIC_GOT(x) x@GOTPCREL(%rip)
|
||||
|
||||
#define __bionic_asm_align 16
|
||||
51
native/src/crt0/syscall/syscall-arm.S
Normal file
51
native/src/crt0/syscall/syscall-arm.S
Normal file
@ -0,0 +1,51 @@
|
||||
/*
|
||||
* Copyright (C) 2008 The Android Open Source Project
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "private/bionic_asm.h"
|
||||
|
||||
ENTRY(syscall)
|
||||
mov ip, sp
|
||||
stmfd sp!, {r4, r5, r6, r7}
|
||||
.cfi_def_cfa_offset 16
|
||||
.cfi_rel_offset r4, 0
|
||||
.cfi_rel_offset r5, 4
|
||||
.cfi_rel_offset r6, 8
|
||||
.cfi_rel_offset r7, 12
|
||||
mov r7, r0
|
||||
mov r0, r1
|
||||
mov r1, r2
|
||||
mov r2, r3
|
||||
ldmfd ip, {r3, r4, r5, r6}
|
||||
swi #0
|
||||
ldmfd sp!, {r4, r5, r6, r7}
|
||||
.cfi_def_cfa_offset 0
|
||||
cmn r0, #(MAX_ERRNO + 1)
|
||||
bxls lr
|
||||
neg r0, r0
|
||||
b __set_errno_internal
|
||||
END(syscall)
|
||||
51
native/src/crt0/syscall/syscall-arm64.S
Normal file
51
native/src/crt0/syscall/syscall-arm64.S
Normal file
@ -0,0 +1,51 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "private/bionic_asm.h"
|
||||
|
||||
ENTRY(syscall)
|
||||
/* Move syscall No. from x0 to x8 */
|
||||
mov x8, x0
|
||||
/* Move syscall parameters from x1 thru x6 to x0 thru x5 */
|
||||
mov x0, x1
|
||||
mov x1, x2
|
||||
mov x2, x3
|
||||
mov x3, x4
|
||||
mov x4, x5
|
||||
mov x5, x6
|
||||
svc #0
|
||||
|
||||
/* check if syscall returned successfully */
|
||||
cmn x0, #(MAX_ERRNO + 1)
|
||||
cneg x0, x0, hi
|
||||
b.hi __set_errno_internal
|
||||
|
||||
ret
|
||||
END(syscall)
|
||||
|
||||
NOTE_GNU_PROPERTY()
|
||||
73
native/src/crt0/syscall/syscall-x86.S
Normal file
73
native/src/crt0/syscall/syscall-x86.S
Normal file
@ -0,0 +1,73 @@
|
||||
/*
|
||||
* Generic syscall call.
|
||||
* Upon entry:
|
||||
* %eax: system call number - caller save
|
||||
* %ebx: arg0 to system call - callee save
|
||||
* %ecx: arg1 - caller save
|
||||
* %edx: arg2 - caller save
|
||||
* %esi: arg3 - callee save
|
||||
* %edi: arg4 - callee save
|
||||
* %ebp: arg5 - callee save
|
||||
*/
|
||||
|
||||
#include "private/bionic_asm.h"
|
||||
|
||||
ENTRY(syscall)
|
||||
# Push the callee save registers.
|
||||
push %ebx
|
||||
.cfi_adjust_cfa_offset 4
|
||||
.cfi_rel_offset ebx, 0
|
||||
push %esi
|
||||
.cfi_adjust_cfa_offset 4
|
||||
.cfi_rel_offset esi, 0
|
||||
push %edi
|
||||
.cfi_adjust_cfa_offset 4
|
||||
.cfi_rel_offset edi, 0
|
||||
push %ebp
|
||||
.cfi_adjust_cfa_offset 4
|
||||
.cfi_rel_offset ebp, 0
|
||||
|
||||
# Get and save the system call entry address.
|
||||
call __kernel_syscall
|
||||
push %eax
|
||||
.cfi_adjust_cfa_offset 4
|
||||
.cfi_rel_offset eax, 0
|
||||
|
||||
# Load all the arguments from the calling frame.
|
||||
# (Not all will be valid, depending on the syscall.)
|
||||
mov 24(%esp),%eax
|
||||
mov 28(%esp),%ebx
|
||||
mov 32(%esp),%ecx
|
||||
mov 36(%esp),%edx
|
||||
mov 40(%esp),%esi
|
||||
mov 44(%esp),%edi
|
||||
mov 48(%esp),%ebp
|
||||
|
||||
# Make the system call.
|
||||
call *(%esp)
|
||||
addl $4, %esp
|
||||
|
||||
# Error?
|
||||
cmpl $-MAX_ERRNO, %eax
|
||||
jb 1f
|
||||
# Yes, so set errno.
|
||||
negl %eax
|
||||
pushl %eax
|
||||
call __set_errno_internal
|
||||
addl $4, %esp
|
||||
1:
|
||||
# Restore the callee save registers.
|
||||
pop %ebp
|
||||
.cfi_adjust_cfa_offset -4
|
||||
.cfi_restore ebp
|
||||
pop %edi
|
||||
.cfi_adjust_cfa_offset -4
|
||||
.cfi_restore edi
|
||||
pop %esi
|
||||
.cfi_adjust_cfa_offset -4
|
||||
.cfi_restore esi
|
||||
pop %ebx
|
||||
.cfi_adjust_cfa_offset -4
|
||||
.cfi_restore ebx
|
||||
ret
|
||||
END(syscall)
|
||||
63
native/src/crt0/syscall/syscall-x86_64.S
Normal file
63
native/src/crt0/syscall/syscall-x86_64.S
Normal file
@ -0,0 +1,63 @@
|
||||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* * Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
||||
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Generic syscall call.
|
||||
* Upon entry:
|
||||
* %rax: system call number
|
||||
* %rdi: arg0 to system call
|
||||
* %rsi: arg1
|
||||
* %rdx: arg2
|
||||
* %rcx: arg3 - syscall expects it at %r10
|
||||
* %r8: arg4
|
||||
* %r9: arg5
|
||||
*/
|
||||
|
||||
#include "private/bionic_asm.h"
|
||||
|
||||
ENTRY(syscall)
|
||||
# All arguments are passed via registers.
|
||||
# (Not all will be valid, depending on the syscall.)
|
||||
mov %edi, %eax
|
||||
mov %rsi, %rdi
|
||||
mov %rdx, %rsi
|
||||
mov %rcx, %rdx
|
||||
mov %r8, %r10
|
||||
mov %r9, %r8
|
||||
mov 8(%rsp), %r9
|
||||
|
||||
# Make the system call.
|
||||
syscall
|
||||
cmpq $-MAX_ERRNO, %rax
|
||||
jb 1f
|
||||
negl %eax
|
||||
movl %eax, %edi
|
||||
call __set_errno_internal
|
||||
1:
|
||||
ret
|
||||
END(syscall)
|
||||
Loading…
x
Reference in New Issue
Block a user