mirror of
https://github.com/reactos/reactos.git
synced 2025-04-11 08:13:25 +00:00
147 lines
5.9 KiB
ArmAsm
147 lines
5.9 KiB
ArmAsm
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* PURPOSE: Implementation of _setjmp/longjmp
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* FILE: lib/sdk/crt/setjmp/amd64/setjmp.s
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* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
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* Katayama Hirofumi MZ (katayama.hirofumi.mz@gmail.com)
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*/
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/* INCLUDES ******************************************************************/
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#include <asm.inc>
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#include <ksamd64.inc>
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#define JUMP_BUFFER_Frame 0 /* 0x00 */
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#define JUMP_BUFFER_Rbx 8 /* 0x08 */
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#define JUMP_BUFFER_Rsp 16 /* 0x10 */
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#define JUMP_BUFFER_Rbp 24 /* 0x18 */
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#define JUMP_BUFFER_Rsi 32 /* 0x20 */
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#define JUMP_BUFFER_Rdi 40 /* 0x28 */
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#define JUMP_BUFFER_R12 48 /* 0x30 */
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#define JUMP_BUFFER_R13 56 /* 0x38 */
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#define JUMP_BUFFER_R14 64 /* 0x40 */
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#define JUMP_BUFFER_R15 72 /* 0x48 */
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#define JUMP_BUFFER_Rip 80 /* 0x50 */
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#define JUMP_BUFFER_Spare 88 /* 0x58 */
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#define JUMP_BUFFER_Xmm6 96 /* 0x60 */
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#define JUMP_BUFFER_Xmm7 112 /* 0x70 */
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#define JUMP_BUFFER_Xmm8 128 /* 0x80 */
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#define JUMP_BUFFER_Xmm9 144 /* 0x90 */
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#define JUMP_BUFFER_Xmm10 160 /* 0xa0 */
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#define JUMP_BUFFER_Xmm11 176 /* 0xb0 */
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#define JUMP_BUFFER_Xmm12 192 /* 0xc0 */
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#define JUMP_BUFFER_Xmm13 208 /* 0xd0 */
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#define JUMP_BUFFER_Xmm14 224 /* 0xe0 */
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#define JUMP_BUFFER_Xmm15 240 /* 0xf0 */
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/* FUNCTIONS ******************************************************************/
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.code64
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/*!
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* int _setjmp(jmp_buf env);
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*
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* \param <rcx> - jmp_buf env
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* \return 0
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* \note Sets up the jmp_buf
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*/
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PUBLIC _setjmp
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FUNC _setjmp
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.endprolog
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xor rdx, rdx
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jmp _setjmpex
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ENDFUNC
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/*!
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* int _setjmpex(jmp_buf _Buf,void *_Ctx);
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*
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* \param <rcx> - jmp_buf env
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* \param <rdx> - frame
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* \return 0
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* \note Sets up the jmp_buf
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*/
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PUBLIC _setjmpex
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FUNC _setjmpex
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.endprolog
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push rbp /* Save rbp */
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mov rbp, rsp /* rbp = rsp */
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and rsp, -16 /* Align rsp to 16-byte boundary */
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mov [rcx + JUMP_BUFFER_Rbx], rbx /* Store rbx */
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mov [rcx + JUMP_BUFFER_Rsp], rsp /* Store rsp */
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mov [rcx + JUMP_BUFFER_Rbp], rbp /* Store rbp */
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mov [rcx + JUMP_BUFFER_Rsi], rsi /* Store rsi (non-volatile on windows) */
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mov [rcx + JUMP_BUFFER_Rdi], rdi /* Store rdi (non-volatile on windows) */
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mov [rcx + JUMP_BUFFER_R12], r12 /* Store r12 */
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mov [rcx + JUMP_BUFFER_R13], r13 /* Store r13 */
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mov [rcx + JUMP_BUFFER_R14], r14 /* Store r14 */
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mov [rcx + JUMP_BUFFER_R15], r15 /* Store r15 */
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lea rax, [rip + LABEL2] /* Get the return address (LABEL2) */
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mov [rcx + JUMP_BUFFER_Rip], rax /* Store rip (return address) */
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mov [rcx + JUMP_BUFFER_Frame], rdx /* Store frame */
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movdqu [rcx + JUMP_BUFFER_Xmm6], xmm6 /* Store xmm6 */
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movdqu [rcx + JUMP_BUFFER_Xmm7], xmm7 /* Store xmm7 */
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movdqu [rcx + JUMP_BUFFER_Xmm8], xmm8 /* Store xmm8 */
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movdqu [rcx + JUMP_BUFFER_Xmm9], xmm9 /* Store xmm9 */
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movdqu [rcx + JUMP_BUFFER_Xmm10], xmm10 /* Store xmm10 */
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movdqu [rcx + JUMP_BUFFER_Xmm11], xmm11 /* Store xmm11 */
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movdqu [rcx + JUMP_BUFFER_Xmm12], xmm12 /* Store xmm12 */
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movdqu [rcx + JUMP_BUFFER_Xmm13], xmm13 /* Store xmm13 */
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movdqu [rcx + JUMP_BUFFER_Xmm14], xmm14 /* Store xmm14 */
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movdqu [rcx + JUMP_BUFFER_Xmm15], xmm15 /* Store xmm15 */
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mov rsp, rbp /* Restore original rsp */
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pop rbp /* Restore original rbp */
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xor eax, eax /* Return 0 */
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LABEL2:
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ret
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ENDFUNC
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/*!
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* void longjmp(jmp_buf env, int value);
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*
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* \param <rcx> - jmp_buf setup by _setjmp
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* \param <rdx> - int value to return
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* \return Doesn't return
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* \note Non-local goto
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*/
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PUBLIC longjmp
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FUNC longjmp
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.endprolog
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mov rbx, [rcx + JUMP_BUFFER_Rbx] /* Restore rbx */
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mov rsp, [rcx + JUMP_BUFFER_Rsp] /* Restore rsp */
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mov rbp, [rcx + JUMP_BUFFER_Rbp] /* Restore rbp */
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mov rsi, [rcx + JUMP_BUFFER_Rsi] /* Restore rsi */
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mov rdi, [rcx + JUMP_BUFFER_Rdi] /* Restore rdi */
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mov r12, [rcx + JUMP_BUFFER_R12] /* Restore r12 */
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mov r13, [rcx + JUMP_BUFFER_R13] /* Restore r13 */
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mov r14, [rcx + JUMP_BUFFER_R14] /* Restore r14 */
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mov r15, [rcx + JUMP_BUFFER_R15] /* Restore r15 */
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mov rax, [rcx + JUMP_BUFFER_Frame] /* Restore frame pointer */
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mov [rsp + 8], rax /* Restore frame pointer */
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movdqu xmm6, [rcx + JUMP_BUFFER_Xmm6] /* Restore xmm6 */
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movdqu xmm7, [rcx + JUMP_BUFFER_Xmm7] /* Restore xmm7 */
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movdqu xmm8, [rcx + JUMP_BUFFER_Xmm8] /* Restore xmm8 */
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movdqu xmm9, [rcx + JUMP_BUFFER_Xmm9] /* Restore xmm9 */
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movdqu xmm10, [rcx + JUMP_BUFFER_Xmm10] /* Restore xmm10 */
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movdqu xmm11, [rcx + JUMP_BUFFER_Xmm11] /* Restore xmm11 */
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movdqu xmm12, [rcx + JUMP_BUFFER_Xmm12] /* Restore xmm12 */
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movdqu xmm13, [rcx + JUMP_BUFFER_Xmm13] /* Restore xmm13 */
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movdqu xmm14, [rcx + JUMP_BUFFER_Xmm14] /* Restore xmm14 */
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movdqu xmm15, [rcx + JUMP_BUFFER_Xmm15] /* Restore xmm15 */
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mov rax, rdx /* Move val into rax (return value) */
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test rax, rax /* Check if val is 0 */
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jz LABEL3 /* If val is 0, jump to LABEL3 */
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jmp qword ptr [rcx + JUMP_BUFFER_Rip] /* Jump to the stored return address (rip) */
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LABEL3:
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mov rax, 1 /* If val was 0, return 1 */
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jmp qword ptr [rcx + JUMP_BUFFER_Rip] /* Jump to the stored return address (rip) */
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ENDFUNC
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END
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