mirror of
https://github.com/reactos/reactos.git
synced 2024-07-10 14:45:06 +00:00
170 lines
4.9 KiB
ArmAsm
170 lines
4.9 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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*/
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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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/* Load rsp as it was before the call into rax */
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lea rax, [rsp + 8]
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/* Load return address into r8 */
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mov r8, [rsp]
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mov qword ptr [rcx + JUMP_BUFFER_Frame], 0
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mov [rcx + JUMP_BUFFER_Rbx], rbx
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mov [rcx + JUMP_BUFFER_Rbp], rbp
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mov [rcx + JUMP_BUFFER_Rsi], rsi
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mov [rcx + JUMP_BUFFER_Rdi], rdi
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mov [rcx + JUMP_BUFFER_R12], r12
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mov [rcx + JUMP_BUFFER_R13], r13
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mov [rcx + JUMP_BUFFER_R14], r14
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mov [rcx + JUMP_BUFFER_R15], r15
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mov [rcx + JUMP_BUFFER_Rsp], rax
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mov [rcx + JUMP_BUFFER_Rip], r8
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movdqa [rcx + JUMP_BUFFER_Xmm6], xmm6
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movdqa [rcx + JUMP_BUFFER_Xmm7], xmm7
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movdqa [rcx + JUMP_BUFFER_Xmm8], xmm8
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movdqa [rcx + JUMP_BUFFER_Xmm9], xmm9
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movdqa [rcx + JUMP_BUFFER_Xmm10], xmm10
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movdqa [rcx + JUMP_BUFFER_Xmm11], xmm11
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movdqa [rcx + JUMP_BUFFER_Xmm12], xmm12
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movdqa [rcx + JUMP_BUFFER_Xmm13], xmm13
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movdqa [rcx + JUMP_BUFFER_Xmm14], xmm14
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movdqa [rcx + JUMP_BUFFER_Xmm15], xmm15
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xor rax, rax
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ret
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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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/* Load rsp as it was before the call into rax */
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lea rax, [rsp + 8]
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/* Load return address into r8 */
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mov r8, [rsp]
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mov [rcx + JUMP_BUFFER_Frame], rdx
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mov [rcx + JUMP_BUFFER_Rbx], rbx
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mov [rcx + JUMP_BUFFER_Rbp], rbp
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mov [rcx + JUMP_BUFFER_Rsi], rsi
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mov [rcx + JUMP_BUFFER_Rdi], rdi
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mov [rcx + JUMP_BUFFER_R12], r12
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mov [rcx + JUMP_BUFFER_R13], r13
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mov [rcx + JUMP_BUFFER_R14], r14
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mov [rcx + JUMP_BUFFER_R15], r15
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mov [rcx + JUMP_BUFFER_Rsp], rax
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mov [rcx + JUMP_BUFFER_Rip], r8
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movdqa [rcx + JUMP_BUFFER_Xmm6], xmm6
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movdqa [rcx + JUMP_BUFFER_Xmm7], xmm7
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movdqa [rcx + JUMP_BUFFER_Xmm8], xmm8
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movdqa [rcx + JUMP_BUFFER_Xmm9], xmm9
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movdqa [rcx + JUMP_BUFFER_Xmm10], xmm10
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movdqa [rcx + JUMP_BUFFER_Xmm11], xmm11
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movdqa [rcx + JUMP_BUFFER_Xmm12], xmm12
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movdqa [rcx + JUMP_BUFFER_Xmm13], xmm13
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movdqa [rcx + JUMP_BUFFER_Xmm14], xmm14
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movdqa [rcx + JUMP_BUFFER_Xmm15], xmm15
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xor rax, rax
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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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// FIXME: handle frame
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mov rbx, [rcx + JUMP_BUFFER_Rbx]
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mov rbp, [rcx + JUMP_BUFFER_Rbp]
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mov rsi, [rcx + JUMP_BUFFER_Rsi]
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mov rdi, [rcx + JUMP_BUFFER_Rdi]
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mov r12, [rcx + JUMP_BUFFER_R12]
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mov r13, [rcx + JUMP_BUFFER_R13]
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mov r14, [rcx + JUMP_BUFFER_R14]
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mov r15, [rcx + JUMP_BUFFER_R15]
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mov rsp, [rcx + JUMP_BUFFER_Rsp]
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mov r8, [rcx + JUMP_BUFFER_Rip]
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movdqa xmm6, [rcx + JUMP_BUFFER_Xmm6]
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movdqa xmm7, [rcx + JUMP_BUFFER_Xmm7]
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movdqa xmm8, [rcx + JUMP_BUFFER_Xmm8]
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movdqa xmm9, [rcx + JUMP_BUFFER_Xmm9]
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movdqa xmm10, [rcx + JUMP_BUFFER_Xmm10]
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movdqa xmm11, [rcx + JUMP_BUFFER_Xmm11]
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movdqa xmm12, [rcx + JUMP_BUFFER_Xmm12]
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movdqa xmm13, [rcx + JUMP_BUFFER_Xmm13]
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movdqa xmm14, [rcx + JUMP_BUFFER_Xmm14]
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movdqa xmm15, [rcx + JUMP_BUFFER_Xmm15]
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/* return param2 or 1 if it was 0 */
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mov rax, rdx
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test rax, rax
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jnz l2
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inc rax
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l2: jmp r8
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ENDFUNC
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END
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