[mirror_edk2.git] / Tools / Source / TianoTools / Common / PeiLib / ia32 / ProcessorAsms.Asm

;\r
; Copyright (c) 2004, Intel Corporation                                                         \r
; All rights reserved. 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
;    ProcessorAsms.Asm\r
;\r
; Abstract:\r
;       This is separated from processor.c to allow this functions to be built with /O1\r
;\r
; Notes:\r
; - Masm uses "This", "ebx", etc as a directive.\r
; - H2INC is still not embedded in our build process so I translated the struc manually.\r
; - Unreferenced variables/arguments (This, NewBsp, NewStack) were causing compile errors and \r
;       did not know of "pragma" mechanism in MASM and I did not want to reduce the warning level. \r
;       Instead, I did a dummy referenced.\r
;\r
\r
  .686P\r
  .MMX\r
  .MODEL SMALL\r
  .CODE\r
\r
EFI_SUCCESS                     equ     0\r
EFI_WARN_RETURN_FROM_LONG_JUMP  equ     5\r
\r
;\r
; Generated by h2inc run manually\r
;\r
_EFI_JUMP_BUFFER                STRUCT 2t\r
_ebx            DWORD           ?\r
_esi            DWORD           ?\r
_edi            DWORD           ?\r
_ebp            DWORD           ?\r
_esp            DWORD           ?\r
_eip            DWORD           ?\r
_EFI_JUMP_BUFFER                ENDS\r
\r
EFI_JUMP_BUFFER         TYPEDEF         _EFI_JUMP_BUFFER\r
\r
TransferControlSetJump      PROTO  C \\r
        _This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
        Jump:PTR EFI_JUMP_BUFFER\r
\r
TransferControlLongJump     PROTO  C \\r
        _This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
        Jump:PTR EFI_JUMP_BUFFER\r
\r
SwitchStacks    PROTO  C \\r
   EntryPoint:PTR DWORD, \\r
   Parameter:DWORD, \\r
   NewStack:PTR DWORD, \\r
   NewBsp:PTR DWORD\r
   \r
SwitchIplStacks PROTO  C \\r
   EntryPoint:PTR DWORD, \\r
   Parameter1:DWORD, \\r
   Parameter2:DWORD, \\r
   NewStack:PTR DWORD, \\r
   NewBsp:PTR DWORD\r
\r
;\r
;Routine Description:\r
;\r
;  This routine implements the IA32 variant of the SetJump call.  Its\r
;  responsibility is to store system state information for a possible\r
;  subsequent LongJump.\r
;\r
;Arguments:\r
;\r
;  Pointer to CPU context save buffer.\r
;\r
;Returns:\r
;\r
;  EFI_SUCCESS\r
;\r
TransferControlSetJump      PROC  C \\r
  _This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
  Jump:PTR EFI_JUMP_BUFFER\r
    \r
  mov   eax, _This \r
  mov   ecx, Jump\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._ebx, ebx\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._esi, esi\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._edi, edi\r
  mov   eax, [ebp]\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._ebp, eax\r
  lea   eax, [ebp+4]\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._esp, eax\r
  mov   eax, [ebp+4]\r
  mov   (EFI_JUMP_BUFFER PTR [ecx])._eip, eax\r
  mov   eax, EFI_SUCCESS\r
  \r
  ret\r
  \r
TransferControlSetJump      ENDP\r
\r
;\r
; Routine Description:\r
; \r
;  This routine implements the IA32 variant of the LongJump call.  Its\r
;  responsibility is restore the system state to the Context Buffer and\r
;  pass control back.\r
;\r
; Arguments:\r
; \r
;  Pointer to CPU context save buffer.\r
;\r
; Returns:\r
;\r
;  EFI_WARN_RETURN_FROM_LONG_JUMP\r
;\r
\r
TransferControlLongJump     PROC  C \\r
        _This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
        Jump:PTR EFI_JUMP_BUFFER\r
\r
  push  ebx\r
  push  esi\r
  push  edi\r
\r
  mov   eax, _This\r
    ; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP\r
  mov   eax, EFI_WARN_RETURN_FROM_LONG_JUMP          \r
  mov   ecx, Jump\r
  mov   ebx, (EFI_JUMP_BUFFER PTR [ecx])._ebx\r
  mov   esi, (EFI_JUMP_BUFFER PTR [ecx])._esi\r
  mov   edi, (EFI_JUMP_BUFFER PTR [ecx])._edi\r
  mov   ebp, (EFI_JUMP_BUFFER PTR [ecx])._ebp\r
  mov   esp, (EFI_JUMP_BUFFER PTR [ecx])._esp\r
  add   esp, 4                                       ;pop the eip\r
  jmp   DWORD PTR (EFI_JUMP_BUFFER PTR [ecx])._eip\r
  mov   eax, EFI_WARN_RETURN_FROM_LONG_JUMP\r
  \r
  pop   edi\r
  pop   esi\r
  pop   ebx\r
  ret\r
  \r
TransferControlLongJump     ENDP\r
\r
;\r
; Routine Description:\r
;       This allows the caller to switch the stack and goes to the new entry point\r
;\r
; Arguments:\r
;       EntryPoint      - Pointer to the location to enter\r
;       Parameter       - Parameter to pass in\r
;       NewStack        - New Location of the stack\r
;       NewBsp          - New BSP\r
;\r
; Returns:\r
;\r
;       Nothing. Goes to the Entry Point passing in the new parameters\r
;\r
SwitchStacks    PROC  C \\r
  EntryPoint:PTR DWORD, \\r
  Parameter:DWORD, \\r
  NewStack:PTR DWORD, \\r
  NewBsp:PTR DWORD\r
  \r
  push  ebx\r
  mov   eax, NewBsp\r
  mov   ebx, Parameter\r
  mov   ecx, EntryPoint\r
  mov   eax, NewStack\r
  mov   esp, eax\r
  push  ebx\r
  push  0\r
  jmp   ecx\r
  \r
  pop   ebx\r
  ret\r
  \r
SwitchStacks    ENDP\r
\r
;\r
; Routine Description:\r
;       This allows the caller to switch the stack and goes to the new entry point\r
;\r
; Arguments:\r
;       EntryPoint              - Pointer to the location to enter\r
;       Parameter1/Parameter2   - Parameter to pass in\r
;       NewStack                - New Location of the stack\r
;       NewBsp                  - New BSP\r
;\r
; Returns:\r
;\r
;       Nothing. Goes to the Entry Point passing in the new parameters\r
;\r
SwitchIplStacks PROC  C \\r
  EntryPoint:PTR DWORD, \\r
  Parameter1:DWORD, \\r
  Parameter2:DWORD, \\r
  NewStack:PTR DWORD, \\r
  NewBsp:PTR DWORD\r
  \r
  push  ebx\r
  mov   eax, NewBsp         \r
  mov   ebx, Parameter1\r
  mov   edx, Parameter2\r
  mov   ecx, EntryPoint\r
  mov   eax, NewStack\r
  mov   esp, eax\r
\r
  push  edx\r
  push  ebx\r
  call  ecx\r
  \r
  pop   ebx\r
  ret\r
  \r
SwitchIplStacks ENDP\r
\r
  END\r
\r
Commit	Line	Data
878ddf1f	1	;\r
	2	; Copyright (c) 2004, Intel Corporation \r
	3	; All rights reserved. This program and the accompanying materials \r
	4	; are licensed and made available under the terms and conditions of the BSD License \r
	5	; which accompanies this distribution. The full text of the license may be found at \r
	6	; http://opensource.org/licenses/bsd-license.php \r
	7	; \r
	8	; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	9	; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	10	; \r
	11	; Module Name:\r
	12	; \r
	13	; ProcessorAsms.Asm\r
	14	;\r
	15	; Abstract:\r
	16	; This is separated from processor.c to allow this functions to be built with /O1\r
	17	;\r
	18	; Notes:\r
	19	; - Masm uses "This", "ebx", etc as a directive.\r
	20	; - H2INC is still not embedded in our build process so I translated the struc manually.\r
	21	; - Unreferenced variables/arguments (This, NewBsp, NewStack) were causing compile errors and \r
	22	; did not know of "pragma" mechanism in MASM and I did not want to reduce the warning level. \r
	23	; Instead, I did a dummy referenced.\r
	24	;\r
	25	\r
	26	.686P\r
	27	.MMX\r
	28	.MODEL SMALL\r
	29	.CODE\r
	30	\r
	31	EFI_SUCCESS equ 0\r
	32	EFI_WARN_RETURN_FROM_LONG_JUMP equ 5\r
	33	\r
	34	;\r
	35	; Generated by h2inc run manually\r
	36	;\r
	37	_EFI_JUMP_BUFFER STRUCT 2t\r
	38	_ebx DWORD ?\r
	39	_esi DWORD ?\r
	40	_edi DWORD ?\r
	41	_ebp DWORD ?\r
	42	_esp DWORD ?\r
	43	_eip DWORD ?\r
	44	_EFI_JUMP_BUFFER ENDS\r
	45	\r
	46	EFI_JUMP_BUFFER TYPEDEF _EFI_JUMP_BUFFER\r
	47	\r
	48	TransferControlSetJump PROTO C \\r
	49	_This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
	50	Jump:PTR EFI_JUMP_BUFFER\r
	51	\r
	52	TransferControlLongJump PROTO C \\r
	53	_This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
	54	Jump:PTR EFI_JUMP_BUFFER\r
	55	\r
	56	SwitchStacks PROTO C \\r
	57	EntryPoint:PTR DWORD, \\r
	58	Parameter:DWORD, \\r
	59	NewStack:PTR DWORD, \\r
	60	NewBsp:PTR DWORD\r
	61	\r
	62	SwitchIplStacks PROTO C \\r
	63	EntryPoint:PTR DWORD, \\r
	64	Parameter1:DWORD, \\r
65	Parameter2:DWORD, \\r
66	NewStack:PTR DWORD, \\r
67	NewBsp:PTR DWORD\r
68	\r
69	;\r
70	;Routine Description:\r
71	;\r
72	; This routine implements the IA32 variant of the SetJump call. Its\r
73	; responsibility is to store system state information for a possible\r
74	; subsequent LongJump.\r
75	;\r
76	;Arguments:\r
77	;\r
78	; Pointer to CPU context save buffer.\r
79	;\r
80	;Returns:\r
81	;\r
82	; EFI_SUCCESS\r
83	;\r
84	TransferControlSetJump PROC C \\r
85	_This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
86	Jump:PTR EFI_JUMP_BUFFER\r
87	\r
88	mov eax, _This \r
89	mov ecx, Jump\r
90	mov (EFI_JUMP_BUFFER PTR [ecx])._ebx, ebx\r
91	mov (EFI_JUMP_BUFFER PTR [ecx])._esi, esi\r
92	mov (EFI_JUMP_BUFFER PTR [ecx])._edi, edi\r
93	mov eax, [ebp]\r
94	mov (EFI_JUMP_BUFFER PTR [ecx])._ebp, eax\r
95	lea eax, [ebp+4]\r
96	mov (EFI_JUMP_BUFFER PTR [ecx])._esp, eax\r
97	mov eax, [ebp+4]\r
98	mov (EFI_JUMP_BUFFER PTR [ecx])._eip, eax\r
99	mov eax, EFI_SUCCESS\r
100	\r
101	ret\r
102	\r
103	TransferControlSetJump ENDP\r
104	\r
105	;\r
106	; Routine Description:\r
107	; \r
108	; This routine implements the IA32 variant of the LongJump call. Its\r
109	; responsibility is restore the system state to the Context Buffer and\r
110	; pass control back.\r
111	;\r
112	; Arguments:\r
113	; \r
114	; Pointer to CPU context save buffer.\r
115	;\r
116	; Returns:\r
117	;\r
118	; EFI_WARN_RETURN_FROM_LONG_JUMP\r
119	;\r
120	\r
121	TransferControlLongJump PROC C \\r
122	_This:PTR EFI_PEI_TRANSFER_CONTROL_PROTOCOL, \\r
123	Jump:PTR EFI_JUMP_BUFFER\r
124	\r
125	push ebx\r
126	push esi\r
127	push edi\r
128	\r
129	mov eax, _This\r
130	; set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP\r
131	mov eax, EFI_WARN_RETURN_FROM_LONG_JUMP \r
132	mov ecx, Jump\r
133	mov ebx, (EFI_JUMP_BUFFER PTR [ecx])._ebx\r
134	mov esi, (EFI_JUMP_BUFFER PTR [ecx])._esi\r
135	mov edi, (EFI_JUMP_BUFFER PTR [ecx])._edi\r
136	mov ebp, (EFI_JUMP_BUFFER PTR [ecx])._ebp\r
137	mov esp, (EFI_JUMP_BUFFER PTR [ecx])._esp\r
138	add esp, 4 ;pop the eip\r
139	jmp DWORD PTR (EFI_JUMP_BUFFER PTR [ecx])._eip\r
140	mov eax, EFI_WARN_RETURN_FROM_LONG_JUMP\r
141	\r
142	pop edi\r
143	pop esi\r
144	pop ebx\r
145	ret\r
146	\r
147	TransferControlLongJump ENDP\r
148	\r
149	;\r
150	; Routine Description:\r
151	; This allows the caller to switch the stack and goes to the new entry point\r
152	;\r
153	; Arguments:\r
154	; EntryPoint - Pointer to the location to enter\r
155	; Parameter - Parameter to pass in\r
156	; NewStack - New Location of the stack\r
157	; NewBsp - New BSP\r
158	;\r
159	; Returns:\r
160	;\r
161	; Nothing. Goes to the Entry Point passing in the new parameters\r
162	;\r
163	SwitchStacks PROC C \\r
164	EntryPoint:PTR DWORD, \\r
165	Parameter:DWORD, \\r
166	NewStack:PTR DWORD, \\r
167	NewBsp:PTR DWORD\r
168	\r
169	push ebx\r
170	mov eax, NewBsp\r
171	mov ebx, Parameter\r
172	mov ecx, EntryPoint\r
173	mov eax, NewStack\r
174	mov esp, eax\r
175	push ebx\r
176	push 0\r
177	jmp ecx\r
178	\r
179	pop ebx\r
180	ret\r
181	\r
182	SwitchStacks ENDP\r
183	\r
184	;\r
185	; Routine Description:\r
186	; This allows the caller to switch the stack and goes to the new entry point\r
187	;\r
188	; Arguments:\r
189	; EntryPoint - Pointer to the location to enter\r
190	; Parameter1/Parameter2 - Parameter to pass in\r
191	; NewStack - New Location of the stack\r
192	; NewBsp - New BSP\r
193	;\r
194	; Returns:\r
195	;\r
196	; Nothing. Goes to the Entry Point passing in the new parameters\r
197	;\r
198	SwitchIplStacks PROC C \\r
199	EntryPoint:PTR DWORD, \\r
200	Parameter1:DWORD, \\r
201	Parameter2:DWORD, \\r
202	NewStack:PTR DWORD, \\r
203	NewBsp:PTR DWORD\r
204	\r
205	push ebx\r
206	mov eax, NewBsp \r
207	mov ebx, Parameter1\r
208	mov edx, Parameter2\r
209	mov ecx, EntryPoint\r
210	mov eax, NewStack\r
211	mov esp, eax\r
212	\r
213	push edx\r
214	push ebx\r
215	call ecx\r
216	\r
217	pop ebx\r
218	ret\r
219	\r
220	SwitchIplStacks ENDP\r
221	\r
222	END\r
223	\r