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LibC: Remove i686 support

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Liav A 2022-10-04 02:52:43 +03:00 • committed by Andreas Kling
parent 85b453c2e4
commit 92da98822a
11 changed files with 9 additions and 169 deletions
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23
Userland/Libraries/LibC/arch/i386/crti.S
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@ -1,23 +0,0 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
.section .init, "ax", @progbits
.align 4
.global _init
.type _init, @function
_init:
pushl %ebp
movl %esp, %ebp
andl $-16, %esp
.section .fini, "ax", @progbits
.align 4
.global _fini
.type _fini, @function
_fini:
pushl %ebp
movl %esp, %ebp
andl $-16, %esp

15
Userland/Libraries/LibC/arch/i386/crtn.S
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@ -1,15 +0,0 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
.section .init, "ax", @progbits
movl %ebp, %esp
popl %ebp
retl
.section .fini, "ax", @progbits
movl %ebp, %esp
popl %ebp
retl

86
Userland/Libraries/LibC/arch/i386/setjmp.S
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@ -1,86 +0,0 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <bits/sighow.h>
//
// /!\ Read setjmp.h before modifying this file!
//
.Lget_pc:
mov (%esp), %ebx
ret
.global _setjmp
.global setjmp
_setjmp:
setjmp:
xor %eax, %eax // Grab val argument (hardcoded to zero)
jmp .Lsigset_common
.global sigsetjmp
sigsetjmp:
mov 8(%esp), %eax // Grab val argument
.Lsigset_common:
mov 4(%esp), %ecx // Grab jmp_buf argument
mov %eax, 24(%ecx) // Store val into did_save_signal_mask
movl $0, 28(%ecx) // Clear saved_signal_mask
test %eax, %eax
jz .Lsaveregs
push %ebp // Prepare ABI-compliant call to sigprocmask
mov %esp, %ebp
push %ebx
call .Lget_pc // Grab the GOT pointer
addl $_GLOBAL_OFFSET_TABLE_, %ebx
lea 28(%ecx), %eax // Set argument oldset
push %eax
push $0 // Set argument set
push $0 // Set argument how
call sigprocmask@plt
add $12, %esp
pop %ebx
pop %ebp
.Lsaveregs:
mov 4(%esp), %ecx // Grab jmp_buf argument
mov (%esp), %edx // Grab return address
mov %ebx, (0 * 4)(%ecx) // Save registers
mov %esi, (1 * 4)(%ecx)
mov %edi, (2 * 4)(%ecx)
mov %ebp, (3 * 4)(%ecx)
mov %esp, (4 * 4)(%ecx)
mov %edx, (5 * 4)(%ecx)
xor %eax, %eax
ret
.global _longjmp
.global longjmp
_longjmp:
longjmp:
mov 4(%esp), %ecx // Grab jmp_buf argument
mov 8(%esp), %eax // Grab val argument
test %eax, %eax
jnz .Lnonzero
mov $1, %eax
.Lnonzero:
mov (0 * 4)(%ecx), %ebx // Restore registers
mov (1 * 4)(%ecx), %esi
mov (2 * 4)(%ecx), %edi
mov (3 * 4)(%ecx), %ebp
//
// Until this point, the stack is still from the caller.
//
mov (4 * 4)(%ecx), %esp
mov (5 * 4)(%ecx), %edx
mov %edx, (%esp) // Patch return address
//
// From this point on, the former stack has been restored.
//
ret