kicad/thirdparty/libcontext/jump_x86_64_ms_pe_masm.asm

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; Copyright Oliver Kowalke 2009.
; Distributed under the Boost Software License, Version 1.0.
; (See accompanying file LICENSE_1_0.txt or copy at
; http://www.boost.org/LICENSE_1_0.txt)
; ----------------------------------------------------------------------------------
; | 0 | 1 | |
; ----------------------------------------------------------------------------------
; | 0x0 | 0x4 | |
; ----------------------------------------------------------------------------------
; | <indicator> | |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
; ----------------------------------------------------------------------------------
; | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | 0x20 | 0x24 |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
; ----------------------------------------------------------------------------------
; | 0x28 | 0x2c | 0x30 | 0x34 | 0x38 | 0x3c | 0x40 | 0x44 |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
; ----------------------------------------------------------------------------------
; | 0x48 | 0x4c | 0x50 | 0x54 | 0x58 | 0x5c | 0x60 | 0x64 |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
; ----------------------------------------------------------------------------------
; | 0x68 | 0x6c | 0x70 | 0x74 | 0x78 | 0x7c | 0x80 | 0x84 |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
; ----------------------------------------------------------------------------------
; | 0x88 | 0x8c | 0x90 | 0x94 | 0x98 | 0x9c | 0xa0 | 0xa4 |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 |
; ----------------------------------------------------------------------------------
; | 0xa8 | 0xac | 0xb0 | 0xb4 | 0xb8 | 0xbc | 0xc0 | 0xc4 |
; ----------------------------------------------------------------------------------
; | fc_mxcsr|fc_x87_cw| <alignment> | fbr_strg | fc_dealloc |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 |
; ----------------------------------------------------------------------------------
; | 0xc8 | 0xcc | 0xd0 | 0xd4 | 0xd8 | 0xdc | 0xe0 | 0xe4 |
; ----------------------------------------------------------------------------------
; | limit | base | R12 | R13 |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 |
; ----------------------------------------------------------------------------------
; | 0xe8 | 0xec | 0xf0 | 0xf4 | 0xf8 | 0xfc | 0x100 | 0x104 |
; ----------------------------------------------------------------------------------
; | R14 | R15 | RDI | RSI |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 |
; ----------------------------------------------------------------------------------
; | 0x108 | 0x10c | 0x110 | 0x114 | 0x118 | 0x11c | 0x120 | 0x124 |
; ----------------------------------------------------------------------------------
; | RBX | RBP | RIP | EXIT |
; ----------------------------------------------------------------------------------
.code
jump_fcontext PROC EXPORT FRAME
.endprolog
push rbp ; save RBP
push rbx ; save RBX
push rsi ; save RSI
push rdi ; save RDI
push r15 ; save R15
push r14 ; save R14
push r13 ; save R13
push r12 ; save R12
; load NT_TIB
mov r10, gs:[030h]
; save current stack base
mov rax, [r10+08h]
push rax
; save current stack limit
mov rax, [r10+010h]
push rax
; save current deallocation stack
mov rax, [r10+01478h]
push rax
; save fiber local storage
mov rax, [r10+020h]
push rax
; prepare stack for FPU
lea rsp, [rsp-0a8h]
; test for flag preserve_fpu
test r9, r9
je nxt1
; save MMX control- and status-word
stmxcsr [rsp+0a0h]
; save x87 control-word
fnstcw [rsp+0a4h]
; save XMM storage
movaps [rsp], xmm6
movaps [rsp+010h], xmm7
movaps [rsp+020h], xmm8
movaps [rsp+030h], xmm9
movaps [rsp+040h], xmm10
movaps [rsp+050h], xmm11
movaps [rsp+060h], xmm12
movaps [rsp+070h], xmm13
movaps [rsp+080h], xmm14
movaps [rsp+090h], xmm15
nxt1:
; set R10 to zero
xor r10, r10
; set indicator
push r10
; store RSP (pointing to context-data) in RCX
mov [rcx], rsp
; restore RSP (pointing to context-data) from RDX
mov rsp, rdx
; load indicator
pop r10
; test for flag preserve_fpu
test r9, r9
je nxt2
; restore MMX control- and status-word
ldmxcsr [rsp+0a0h]
; save x87 control-word
fldcw [rsp+0a4h]
; restore XMM storage
movaps xmm6, [rsp]
movaps xmm7, [rsp+010h]
movaps xmm8, [rsp+020h]
movaps xmm9, [rsp+030h]
movaps xmm10, [rsp+040h]
movaps xmm11, [rsp+050h]
movaps xmm12, [rsp+060h]
movaps xmm13, [rsp+070h]
movaps xmm14, [rsp+080h]
movaps xmm15, [rsp+090h]
nxt2:
; set offset of stack
mov rcx, 0a8h
; test for indicator
test r10, r10
je nxt3
add rcx, 08h
nxt3:
; prepare stack for FPU
lea rsp, [rsp+rcx]
; load NT_TIB
mov r10, gs:[030h]
; restore fiber local storage
pop rax
mov [r10+020h], rax
; restore deallocation stack
pop rax
mov [r10+01478h], rax
; restore stack limit
pop rax
mov [r10+010h], rax
; restore stack base
pop rax
mov [r10+08h], rax
pop r12 ; restore R12
pop r13 ; restore R13
pop r14 ; restore R14
pop r15 ; restore R15
pop rdi ; restore RDI
pop rsi ; restore RSI
pop rbx ; restore RBX
pop rbp ; restore RBP
; restore return-address
pop r10
; use third arg as return-value after jump
mov rax, r8
; use third arg as first arg in context function
mov rcx, r8
; indirect jump to context
jmp r10
jump_fcontext ENDP
END