[mirror_edk2.git] / SourceLevelDebugPkg / Library / DebugAgent / DebugAgentCommon / X64 / AsmFuncs.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
; This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php.\r
;\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
; Module Name:\r
;\r
;   AsmFuncs.asm\r
;\r
; Abstract:\r
;\r
;   Debug interrupt handle functions.\r
;\r
;------------------------------------------------------------------------------\r
\r
#include "DebugException.h"\r
\r
\r
externdef InterruptProcess:near\r
\r
data SEGMENT\r
\r
public          Exception0Handle, TimerInterruptHandle, ExceptionStubHeaderSize\r
\r
AGENT_HANDLER_SIGNATURE  MACRO\r
  db   41h, 47h, 54h, 48h       ; SIGNATURE_32('A','G','T','H')\r
ENDM\r
\r
ExceptionStubHeaderSize        dd      Exception1Handle - Exception0Handle ;\r
CommonEntryAddr                dq      CommonEntry ;\r
\r
.code\r
\r
AGENT_HANDLER_SIGNATURE\r
Exception0Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 0\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE	\r
Exception1Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 1\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception2Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 2\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception3Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 3\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception4Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 4\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception5Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 5\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception6Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 6\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception7Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 7\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception8Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 8\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception9Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 9\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception10Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 10\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception11Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 11\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception12Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 12\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception13Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 13\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception14Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 14\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception15Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 15\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception16Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 16\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception17Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 17\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception18Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 18\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
Exception19Handle:\r
    cli\r
    push    rcx\r
    mov     rcx, 19\r
    jmp     qword ptr [CommonEntryAddr]\r
AGENT_HANDLER_SIGNATURE\r
TimerInterruptHandle:\r
    cli\r
    push    rcx\r
    mov     rcx, 32\r
    jmp     qword ptr [CommonEntryAddr]\r
\r
CommonEntry:\r
    ; We need to determine if any extra data was pushed by the exception\r
    cmp     rcx, DEBUG_EXCEPT_DOUBLE_FAULT\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_INVALID_TSS\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_SEG_NOT_PRESENT\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_STACK_FAULT\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_GP_FAULT\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_PAGE_FAULT\r
    je      NoExtrPush\r
    cmp     rcx, DEBUG_EXCEPT_ALIGNMENT_CHECK\r
    je      NoExtrPush\r
\r
    push    [rsp]\r
    mov     qword ptr [rsp + 8], 0\r
\r
NoExtrPush:\r
    push    rbp\r
    mov     rbp, rsp\r
\r
    ; store UINT64  r8, r9, r10, r11, r12, r13, r14, r15;\r
    push    r15\r
    push    r14\r
    push    r13\r
    push    r12\r
    push    r11\r
    push    r10\r
    push    r9\r
    push    r8\r
\r
    mov     r8, cr8\r
    push    r8\r
\r
    ; store UINT64  Rdi, Rsi, Rbp, Rsp, Rdx, Rcx, Rbx, Rax;\r
    push    rax\r
    push    rbx\r
    push    qword ptr [rbp + 8]       ; original rcx\r
    push    rdx\r
    push    qword ptr [rbp + 6 * 8]   ; original rsp\r
    push    qword ptr [rbp]           ; original rbp\r
    push    rsi\r
    push    rdi\r
\r
    ;; UINT32  Cr0, Cr1, Cr2, Cr3, Cr4;\r
    ;; insure FXSAVE/FXRSTOR is enabled in CR4...\r
    ;; ... while we're at it, make sure DE is also enabled...\r
    mov     rax, cr4\r
    or      rax, 208h\r
    mov     cr4, rax\r
    push    rax\r
    mov     rax, cr3\r
    push    rax\r
    mov     rax, cr2\r
    push    rax\r
    push    0\r
    mov     rax, cr0\r
    push    rax\r
\r
    xor     rax, rax\r
    mov     rax, Ss\r
    push    rax\r
    mov     rax, Cs\r
    push    rax\r
    mov     rax, Ds\r
    push    rax\r
    mov     rax, Es\r
    push    rax\r
    mov     rax, Fs\r
    push    rax\r
    mov     rax, Gs\r
    push    rax\r
\r
    ;; EIP\r
    mov     rax, [rbp + 8 * 3] ; EIP\r
    push    rax\r
\r
    ;; UINT64  Gdtr[2], Idtr[2];\r
    sub  rsp, 16\r
    sidt fword ptr [rsp]\r
    sub  rsp, 16\r
    sgdt fword ptr [rsp]\r
\r
    ;; UINT64  Ldtr, Tr;\r
    xor  rax, rax\r
    str  ax\r
    push rax\r
    sldt ax\r
    push rax\r
\r
    ;; EFlags\r
    mov     rax, [rbp + 8 * 5]\r
    push    rax\r
\r
    ;; UINT64  Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
    mov     rax, dr7\r
    push    rax\r
\r
    ;; clear Dr7 while executing debugger itself\r
    xor     rax, rax\r
    mov     dr7, rax\r
\r
    ;; Dr6\r
    mov     rax, dr6\r
    push    rax\r
\r
    ;; insure all status bits in dr6 are clear...\r
    xor     rax, rax\r
    mov     dr6, rax\r
\r
    mov     rax, dr3\r
    push    rax\r
    mov     rax, dr2\r
    push    rax\r
    mov     rax, dr1\r
    push    rax\r
    mov     rax, dr0\r
    push    rax\r
\r
    ;; Clear Direction Flag\r
    cld\r
\r
    sub     rsp, 512\r
    mov     rdi, rsp\r
    ;; Clear the buffer\r
    xor     rax, rax\r
    push    rcx\r
    mov     rcx, 64 ;= 512 / 8\r
    rep     stosq\r
    pop     rcx\r
    mov     rdi, rsp\r
    db 0fh, 0aeh, 00000111y ;fxsave [rdi]\r
\r
    ;; save the exception data\r
    push    qword ptr [rbp + 16]\r
\r
    ; call the C interrupt process function\r
    mov     rdx, rsp      ; Structure\r
    mov     r15, rcx      ; save vector in r15\r
    \r
    ;\r
    ; Per X64 calling convention, allocate maximum parameter stack space\r
    ; and make sure RSP is 16-byte aligned\r
    ;\r
    sub     rsp, 32 + 8\r
    call    InterruptProcess\r
    add     rsp, 32 + 8\r
\r
    ;; skip the exception data\r
    add     rsp, 8\r
    \r
    mov     rsi, rsp\r
    db 0fh, 0aeh, 00001110y ; fxrstor [rsi]\r
    add     rsp, 512\r
\r
    ;; UINT64  Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
    pop     rax\r
    mov     dr0, rax\r
    pop     rax\r
    mov     dr1, rax\r
    pop     rax\r
    mov     dr2, rax\r
    pop     rax\r
    mov     dr3, rax\r
    ;; skip restore of dr6.  We cleared dr6 during the context save.\r
    add     rsp, 8\r
    pop     rax\r
    mov     dr7, rax\r
\r
    ;; set EFlags\r
    pop     qword ptr [rbp + 8 * 5]\r
\r
    ;; UINT64  Ldtr, Tr;\r
    ;; UINT64  Gdtr[2], Idtr[2];\r
    ;; Best not let anyone mess with these particular registers...\r
    add     rsp, 24 * 2\r
\r
    ;; UINT64  Eip;\r
    pop     qword ptr [rbp + 8 * 3]   ; set EIP in stack\r
\r
    ;; UINT64  Gs, Fs, Es, Ds, Cs, Ss;\r
    ;; NOTE - modified segment registers could hang the debugger...  We\r
    ;;        could attempt to insulate ourselves against this possibility,\r
    ;;        but that poses risks as well.\r
    ;;\r
    pop     rax\r
    pop     rax\r
    pop     rax\r
    mov     es, rax\r
    pop     rax\r
    mov     ds, rax\r
    pop     qword ptr [rbp + 8 * 4]    ; Set CS in stack\r
    pop     rax\r
    mov     ss, rax\r
\r
    ;; UINT64  Cr0, Cr1, Cr2, Cr3, Cr4;\r
    pop     rax\r
    mov     cr0, rax\r
    add     rsp, 8    ; skip for Cr1\r
    pop     rax\r
    mov     cr2, rax\r
    pop     rax\r
    mov     cr3, rax\r
    pop     rax\r
    mov     cr4, rax\r
\r
    ;; restore general register\r
    pop    rdi\r
    pop    rsi\r
    add    rsp, 8  ; skip rbp\r
    add    rsp, 8  ; skip rsp\r
    pop    rdx\r
    pop    rcx\r
    pop    rbx\r
    pop    rax\r
\r
    pop    r8\r
    mov    cr8, r8\r
\r
    ; store UINT64  r8, r9, r10, r11, r12, r13, r14, r15;\r
    pop     r8\r
    pop     r9\r
    pop     r10\r
    pop     r11\r
    pop     r12\r
    pop     r13\r
    pop     r14\r
    pop     r15\r
\r
    mov     rsp, rbp\r
    pop     rbp\r
    add     rsp, 16      ; skip rcx and error code\r
\r
    iretq\r
\r
END\r
Commit	Line	Data
18b144ea	1	;------------------------------------------------------------------------------\r
18b144ea	2	;\r
d9044ec5	3	; Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
18b144ea	4	; This program and the accompanying materials\r
	5	; are licensed and made available under the terms and conditions of the BSD License\r
	6	; which accompanies this distribution. The full text of the license may be found at\r
	7	; http://opensource.org/licenses/bsd-license.php.\r
	8	;\r
	9	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	;\r
	12	; Module Name:\r
	13	;\r
	14	; AsmFuncs.asm\r
	15	;\r
	16	; Abstract:\r
	17	;\r
	18	; Debug interrupt handle functions.\r
	19	;\r
	20	;------------------------------------------------------------------------------\r
	21	\r
	22	#include "DebugException.h"\r
	23	\r
	24	\r
	25	externdef InterruptProcess:near\r
	26	\r
	27	data SEGMENT\r
	28	\r
	29	public Exception0Handle, TimerInterruptHandle, ExceptionStubHeaderSize\r
	30	\r
8cc26df4 JF	31	AGENT_HANDLER_SIGNATURE MACRO\r
	32	db 41h, 47h, 54h, 48h ; SIGNATURE_32('A','G','T','H')\r
	33	ENDM\r
	34	\r
19ee4a90	35	ExceptionStubHeaderSize dd Exception1Handle - Exception0Handle ;\r
18b144ea	36	CommonEntryAddr dq CommonEntry ;\r
	37	\r
	38	.code\r
	39	\r
8cc26df4	40	AGENT_HANDLER_SIGNATURE\r
18b144ea	41	Exception0Handle:\r
	42	cli\r
	43	push rcx\r
	44	mov rcx, 0\r
	45	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	46	AGENT_HANDLER_SIGNATURE \r
18b144ea	47	Exception1Handle:\r
	48	cli\r
	49	push rcx\r
	50	mov rcx, 1\r
	51	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	52	AGENT_HANDLER_SIGNATURE\r
18b144ea	53	Exception2Handle:\r
	54	cli\r
	55	push rcx\r
	56	mov rcx, 2\r
	57	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	58	AGENT_HANDLER_SIGNATURE\r
18b144ea	59	Exception3Handle:\r
	60	cli\r
	61	push rcx\r
	62	mov rcx, 3\r
	63	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	64	AGENT_HANDLER_SIGNATURE\r
18b144ea	65	Exception4Handle:\r
	66	cli\r
	67	push rcx\r
	68	mov rcx, 4\r
	69	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	70	AGENT_HANDLER_SIGNATURE\r
18b144ea	71	Exception5Handle:\r
	72	cli\r
	73	push rcx\r
	74	mov rcx, 5\r
	75	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	76	AGENT_HANDLER_SIGNATURE\r
18b144ea	77	Exception6Handle:\r
	78	cli\r
	79	push rcx\r
	80	mov rcx, 6\r
	81	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	82	AGENT_HANDLER_SIGNATURE\r
18b144ea	83	Exception7Handle:\r
	84	cli\r
	85	push rcx\r
	86	mov rcx, 7\r
	87	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	88	AGENT_HANDLER_SIGNATURE\r
18b144ea	89	Exception8Handle:\r
	90	cli\r
	91	push rcx\r
	92	mov rcx, 8\r
	93	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	94	AGENT_HANDLER_SIGNATURE\r
18b144ea	95	Exception9Handle:\r
	96	cli\r
	97	push rcx\r
	98	mov rcx, 9\r
	99	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	100	AGENT_HANDLER_SIGNATURE\r
18b144ea	101	Exception10Handle:\r
	102	cli\r
	103	push rcx\r
	104	mov rcx, 10\r
	105	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	106	AGENT_HANDLER_SIGNATURE\r
18b144ea	107	Exception11Handle:\r
	108	cli\r
	109	push rcx\r
	110	mov rcx, 11\r
	111	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	112	AGENT_HANDLER_SIGNATURE\r
18b144ea	113	Exception12Handle:\r
	114	cli\r
	115	push rcx\r
	116	mov rcx, 12\r
	117	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	118	AGENT_HANDLER_SIGNATURE\r
18b144ea	119	Exception13Handle:\r
	120	cli\r
	121	push rcx\r
	122	mov rcx, 13\r
	123	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	124	AGENT_HANDLER_SIGNATURE\r
18b144ea	125	Exception14Handle:\r
	126	cli\r
	127	push rcx\r
	128	mov rcx, 14\r
	129	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	130	AGENT_HANDLER_SIGNATURE\r
18b144ea	131	Exception15Handle:\r
	132	cli\r
	133	push rcx\r
	134	mov rcx, 15\r
	135	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	136	AGENT_HANDLER_SIGNATURE\r
18b144ea	137	Exception16Handle:\r
	138	cli\r
	139	push rcx\r
	140	mov rcx, 16\r
	141	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	142	AGENT_HANDLER_SIGNATURE\r
18b144ea	143	Exception17Handle:\r
	144	cli\r
	145	push rcx\r
	146	mov rcx, 17\r
	147	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	148	AGENT_HANDLER_SIGNATURE\r
18b144ea	149	Exception18Handle:\r
	150	cli\r
	151	push rcx\r
	152	mov rcx, 18\r
	153	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	154	AGENT_HANDLER_SIGNATURE\r
18b144ea	155	Exception19Handle:\r
	156	cli\r
	157	push rcx\r
	158	mov rcx, 19\r
	159	jmp qword ptr [CommonEntryAddr]\r
8cc26df4	160	AGENT_HANDLER_SIGNATURE\r
18b144ea	161	TimerInterruptHandle:\r
	162	cli\r
	163	push rcx\r
	164	mov rcx, 32\r
	165	jmp qword ptr [CommonEntryAddr]\r
	166	\r
	167	CommonEntry:\r
	168	; We need to determine if any extra data was pushed by the exception\r
	169	cmp rcx, DEBUG_EXCEPT_DOUBLE_FAULT\r
	170	je NoExtrPush\r
	171	cmp rcx, DEBUG_EXCEPT_INVALID_TSS\r
	172	je NoExtrPush\r
	173	cmp rcx, DEBUG_EXCEPT_SEG_NOT_PRESENT\r
	174	je NoExtrPush\r
	175	cmp rcx, DEBUG_EXCEPT_STACK_FAULT\r
	176	je NoExtrPush\r
	177	cmp rcx, DEBUG_EXCEPT_GP_FAULT\r
	178	je NoExtrPush\r
	179	cmp rcx, DEBUG_EXCEPT_PAGE_FAULT\r
	180	je NoExtrPush\r
	181	cmp rcx, DEBUG_EXCEPT_ALIGNMENT_CHECK\r
	182	je NoExtrPush\r
	183	\r
	184	push [rsp]\r
	185	mov qword ptr [rsp + 8], 0\r
	186	\r
	187	NoExtrPush:\r
	188	push rbp\r
	189	mov rbp, rsp\r
	190	\r
	191	; store UINT64 r8, r9, r10, r11, r12, r13, r14, r15;\r
	192	push r15\r
	193	push r14\r
	194	push r13\r
	195	push r12\r
	196	push r11\r
	197	push r10\r
	198	push r9\r
	199	push r8\r
	200	\r
	201	mov r8, cr8\r
	202	push r8\r
	203	\r
	204	; store UINT64 Rdi, Rsi, Rbp, Rsp, Rdx, Rcx, Rbx, Rax;\r
	205	push rax\r
	206	push rbx\r
	207	push qword ptr [rbp + 8] ; original rcx\r
	208	push rdx\r
	209	push qword ptr [rbp + 6 * 8] ; original rsp\r
	210	push qword ptr [rbp] ; original rbp\r
	211	push rsi\r
	212	push rdi\r
	213	\r
	214	;; UINT32 Cr0, Cr1, Cr2, Cr3, Cr4;\r
	215	;; insure FXSAVE/FXRSTOR is enabled in CR4...\r
	216	;; ... while we're at it, make sure DE is also enabled...\r
	217	mov rax, cr4\r
	218	or rax, 208h\r
	219	mov cr4, rax\r
	220	push rax\r
	221	mov rax, cr3\r
	222	push rax\r
	223	mov rax, cr2\r
	224	push rax\r
b422b62c	225	push 0\r
18b144ea	226	mov rax, cr0\r
	227	push rax\r
	228	\r
	229	xor rax, rax\r
	230	mov rax, Ss\r
	231	push rax\r
	232	mov rax, Cs\r
	233	push rax\r
	234	mov rax, Ds\r
	235	push rax\r
	236	mov rax, Es\r
	237	push rax\r
	238	mov rax, Fs\r
	239	push rax\r
	240	mov rax, Gs\r
	241	push rax\r
	242	\r
	243	;; EIP\r
	244	mov rax, [rbp + 8 * 3] ; EIP\r
	245	push rax\r
	246	\r
	247	;; UINT64 Gdtr[2], Idtr[2];\r
	248	sub rsp, 16\r
	249	sidt fword ptr [rsp]\r
	250	sub rsp, 16\r
	251	sgdt fword ptr [rsp]\r
	252	\r
	253	;; UINT64 Ldtr, Tr;\r
	254	xor rax, rax\r
	255	str ax\r
	256	push rax\r
	257	sldt ax\r
	258	push rax\r
	259	\r
	260	;; EFlags\r
	261	mov rax, [rbp + 8 * 5]\r
	262	push rax\r
	263	\r
	264	;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
	265	mov rax, dr7\r
	266	push rax\r
	267	\r
	268	;; clear Dr7 while executing debugger itself\r
	269	xor rax, rax\r
	270	mov dr7, rax\r
	271	\r
	272	;; Dr6\r
	273	mov rax, dr6\r
	274	push rax\r
	275	\r
	276	;; insure all status bits in dr6 are clear...\r
	277	xor rax, rax\r
	278	mov dr6, rax\r
	279	\r
	280	mov rax, dr3\r
	281	push rax\r
	282	mov rax, dr2\r
	283	push rax\r
	284	mov rax, dr1\r
	285	push rax\r
	286	mov rax, dr0\r
	287	push rax\r
	288	\r
d9044ec5 RN	289	;; Clear Direction Flag\r
	290	cld\r
	291	\r
18b144ea	292	sub rsp, 512\r
93c0bdec	293	mov rdi, rsp\r
d9044ec5 RN	294	;; Clear the buffer\r
	295	xor rax, rax\r
	296	push rcx\r
	297	mov rcx, 64 ;= 512 / 8\r
	298	rep stosq\r
	299	pop rcx\r
	300	mov rdi, rsp\r
18b144ea	301	db 0fh, 0aeh, 00000111y ;fxsave [rdi]\r
18b144ea	302	\r
93c0bdec	303	;; save the exception data\r
	304	push qword ptr [rbp + 16]\r
	305	\r
18b144ea	306	; call the C interrupt process function\r
	307	mov rdx, rsp ; Structure\r
	308	mov r15, rcx ; save vector in r15\r
	309	\r
93c0bdec	310	;\r
	311	; Per X64 calling convention, allocate maximum parameter stack space\r
	312	; and make sure RSP is 16-byte aligned\r
	313	;\r
	314	sub rsp, 32 + 8\r
18b144ea	315	call InterruptProcess\r
93c0bdec	316	add rsp, 32 + 8\r
	317	\r
	318	;; skip the exception data\r
	319	add rsp, 8\r
18b144ea	320	\r
	321	mov rsi, rsp\r
	322	db 0fh, 0aeh, 00001110y ; fxrstor [rsi]\r
	323	add rsp, 512\r
	324	\r
	325	;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
	326	pop rax\r
	327	mov dr0, rax\r
	328	pop rax\r
	329	mov dr1, rax\r
	330	pop rax\r
	331	mov dr2, rax\r
	332	pop rax\r
	333	mov dr3, rax\r
	334	;; skip restore of dr6. We cleared dr6 during the context save.\r
	335	add rsp, 8\r
	336	pop rax\r
	337	mov dr7, rax\r
	338	\r
	339	;; set EFlags\r
	340	pop qword ptr [rbp + 8 * 5]\r
	341	\r
	342	;; UINT64 Ldtr, Tr;\r
	343	;; UINT64 Gdtr[2], Idtr[2];\r
	344	;; Best not let anyone mess with these particular registers...\r
	345	add rsp, 24 * 2\r
	346	\r
	347	;; UINT64 Eip;\r
	348	pop qword ptr [rbp + 8 * 3] ; set EIP in stack\r
	349	\r
	350	;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
	351	;; NOTE - modified segment registers could hang the debugger... We\r
	352	;; could attempt to insulate ourselves against this possibility,\r
	353	;; but that poses risks as well.\r
	354	;;\r
	355	pop rax\r
	356	pop rax\r
	357	pop rax\r
	358	mov es, rax\r
	359	pop rax\r
	360	mov ds, rax\r
	361	pop qword ptr [rbp + 8 * 4] ; Set CS in stack\r
	362	pop rax\r
	363	mov ss, rax\r
	364	\r
	365	;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4;\r
	366	pop rax\r
	367	mov cr0, rax\r
	368	add rsp, 8 ; skip for Cr1\r
	369	pop rax\r
	370	mov cr2, rax\r
	371	pop rax\r
	372	mov cr3, rax\r
	373	pop rax\r
	374	mov cr4, rax\r
	375	\r
	376	;; restore general register\r
	377	pop rdi\r
	378	pop rsi\r
	379	add rsp, 8 ; skip rbp\r
	380	add rsp, 8 ; skip rsp\r
	381	pop rdx\r
	382	pop rcx\r
	383	pop rbx\r
384	pop rax\r
385	\r
386	pop r8\r
387	mov cr8, r8\r
388	\r
389	; store UINT64 r8, r9, r10, r11, r12, r13, r14, r15;\r
390	pop r8\r
391	pop r9\r
392	pop r10\r
393	pop r11\r
394	pop r12\r
395	pop r13\r
396	pop r14\r
397	pop r15\r
398	\r
399	mov rsp, rbp\r
400	pop rbp\r
401	add rsp, 16 ; skip rcx and error code\r
402	\r
403	iretq\r
404	\r
405	END\r