2024-05-02 07:25:01 +00:00
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/*
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* vcomp fork implementation
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*
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* Copyright 2012 Dan Kegel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#if 0
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#pragma makedep arm64ec_x64
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#endif
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#include <stdarg.h>
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#include "windef.h"
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#include "wine/asm.h"
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#ifdef __i386__
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__ASM_GLOBAL_FUNC( _vcomp_fork_call_wrapper,
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"pushl %ebp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
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__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
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"movl %esp,%ebp\n\t"
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__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
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"pushl %esi\n\t"
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__ASM_CFI(".cfi_rel_offset %esi,-4\n\t")
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"pushl %edi\n\t"
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__ASM_CFI(".cfi_rel_offset %edi,-8\n\t")
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"movl 12(%ebp),%edx\n\t"
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"movl %esp,%edi\n\t"
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"shll $2,%edx\n\t"
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"jz 1f\n\t"
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"subl %edx,%edi\n\t"
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"andl $~15,%edi\n\t"
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"movl %edi,%esp\n\t"
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"movl 12(%ebp),%ecx\n\t"
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"movl 16(%ebp),%esi\n\t"
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"cld\n\t"
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"rep; movsl\n"
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"1:\tcall *8(%ebp)\n\t"
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"leal -8(%ebp),%esp\n\t"
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"popl %edi\n\t"
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__ASM_CFI(".cfi_same_value %edi\n\t")
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"popl %esi\n\t"
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__ASM_CFI(".cfi_same_value %esi\n\t")
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"popl %ebp\n\t"
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__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
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__ASM_CFI(".cfi_same_value %ebp\n\t")
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"ret" )
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#elif defined __x86_64__
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__ASM_GLOBAL_FUNC( _vcomp_fork_call_wrapper,
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"pushq %rbp\n\t"
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__ASM_SEH(".seh_pushreg %rbp\n\t")
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__ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
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__ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
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"movq %rsp,%rbp\n\t"
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__ASM_SEH(".seh_setframe %rbp,0\n\t")
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__ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
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"pushq %rsi\n\t"
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__ASM_SEH(".seh_pushreg %rsi\n\t")
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__ASM_CFI(".cfi_rel_offset %rsi,-8\n\t")
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"pushq %rdi\n\t"
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__ASM_SEH(".seh_pushreg %rdi\n\t")
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__ASM_SEH(".seh_endprologue\n\t")
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__ASM_CFI(".cfi_rel_offset %rdi,-16\n\t")
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"movq %rcx,%rax\n\t"
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"movq $4,%rcx\n\t"
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"cmp %rcx,%rdx\n\t"
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"cmovgq %rdx,%rcx\n\t"
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"leaq 0(,%rcx,8),%rdx\n\t"
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"subq %rdx,%rsp\n\t"
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"andq $~15,%rsp\n\t"
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"movq %rsp,%rdi\n\t"
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"movq %r8,%rsi\n\t"
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"rep; movsq\n\t"
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"movq 0(%rsp),%rcx\n\t"
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"movq 8(%rsp),%rdx\n\t"
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"movq 16(%rsp),%r8\n\t"
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"movq 24(%rsp),%r9\n\t"
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"callq *%rax\n\t"
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"leaq -16(%rbp),%rsp\n\t"
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"popq %rdi\n\t"
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__ASM_CFI(".cfi_same_value %rdi\n\t")
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"popq %rsi\n\t"
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__ASM_CFI(".cfi_same_value %rsi\n\t")
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__ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
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"popq %rbp\n\t"
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__ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
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__ASM_CFI(".cfi_same_value %rbp\n\t")
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"ret" )
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#elif defined __arm__
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__ASM_GLOBAL_FUNC( _vcomp_fork_call_wrapper,
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2024-05-02 07:25:11 +00:00
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"push {fp, lr}\n\t"
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".seh_save_regs_w {fp, lr}\n\t"
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"mov fp, sp\n\t"
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".seh_save_sp fp\n\t"
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".seh_endprologue\n\t"
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2024-05-02 07:25:01 +00:00
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"lsl r3, r1, #2\n\t"
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"tst r1, #1\n\t"
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2024-05-02 07:25:11 +00:00
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"it ne\n\t"
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"addne r3, r3, #4\n\t"
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"cmp r3, #16\n\t"
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"it lt\n\t"
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"movlt r3, #16\n\t"
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"sub sp, sp, r3\n\t"
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"mov ip, r0\n\t"
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"mov r3, #0\n\t"
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"cmp r1, #0\n\t"
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"beq 2f\n"
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"1:\tldr r0, [r2, r3]\n\t"
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"str r0, [sp, r3]\n\t"
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"add r3, r3, #4\n\t"
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"subs r1, r1, #1\n\t"
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"bne 1b\n"
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"2:\tpop {r0-r3}\n\t"
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"blx ip\n\t"
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"mov sp, fp\n\t"
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"pop {fp, pc}" )
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2024-05-02 07:25:01 +00:00
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#elif defined __aarch64__
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__ASM_GLOBAL_FUNC( _vcomp_fork_call_wrapper,
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"stp x29, x30, [SP,#-16]!\n\t"
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".seh_save_fplr_x 16\n\t"
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"mov x29, SP\n\t"
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".seh_set_fp\n\t"
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".seh_endprologue\n\t"
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"mov x9, x0\n\t"
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"cbz w1, 4f\n\t"
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"lsl w8, w1, #3\n\t"
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"cmp w8, #64\n\t"
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"b.ge 1f\n\t"
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"mov w8, #64\n"
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"1:\ttbz w8, #3, 2f\n\t"
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"add w8, w8, #8\n"
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"2:\tsub x10, x29, x8\n\t"
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"mov sp, x10\n"
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"3:\tldr x0, [x2], #8\n\t"
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"str x0, [x10], #8\n\t"
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"subs w1, w1, #1\n\t"
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"b.ne 3b\n\t"
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"ldp x0, x1, [sp], #16\n\t"
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"ldp x2, x3, [sp], #16\n\t"
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"ldp x4, x5, [sp], #16\n\t"
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"ldp x6, x7, [sp], #16\n"
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"4:\tblr x9\n\t"
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"mov SP, x29\n\t"
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"ldp x29, x30, [SP], #16\n\t"
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"ret" )
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#endif
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