[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Cpu / Pentium / CpuIA32Lib / X64 / Cpu.S

#------------------------------------------------------------------------------\r
#*\r
#*   Copyright (c) 2008 - 2010, 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
#*    Cpu.asm\r
#*  \r
#*   Abstract:\r
#*  \r
#------------------------------------------------------------------------------\r
#include <EfiBind.h>\r
\r
.globl ASM_PFX(EfiHalt)\r
.globl ASM_PFX(EfiWbinvd)\r
.globl ASM_PFX(EfiInvd)\r
.globl ASM_PFX(EfiCpuid)\r
.globl ASM_PFX(EfiReadTsc)\r
.globl ASM_PFX(EfiDisableCache)\r
.globl ASM_PFX(EfiEnableCache)\r
.globl ASM_PFX(EfiReadMsr)\r
.globl ASM_PFX(EfiGetEflags)\r
.globl ASM_PFX(EfiDisableInterrupts)\r
.globl ASM_PFX(EfiEnableInterrupts)\r
.globl ASM_PFX(EfiCpuidExt)\r
\r
.text\r
\r
\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiHalt (\r
#    VOID\r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiHalt):\r
    hlt\r
    retq\r
\r
\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiWbinvd (\r
#    VOID\r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiWbinvd):\r
    wbinvd\r
    retq\r
\r
\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiInvd (\r
#    VOID\r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiInvd):\r
    invd\r
    retq\r
\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiCpuid (\r
#    IN   UINT32              RegisterInEax,          // rcx   \r
#    OUT  EFI_CPUID_REGISTER  *Reg           OPTIONAL // rdx  \r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiCpuid):\r
      push   %rbx\r
      mov    %rdx,%r8\r
      mov    %rcx,%rax\r
      cpuid  \r
      cmp    $0x0,%r8\r
      je     _Exit\r
      mov    %eax,(%r8)\r
      mov    %ebx,0x4(%r8)\r
      mov    %ecx,0x8(%r8)\r
      mov    %edx,0xc(%r8)\r
_Exit:      \r
      pop    %rbx\r
      retq\r
\r
#------------------------------------------------------------------------------\r
#  UINT64\r
#  EfiReadMsr (\r
#    IN   UINT32  Index,  // rcx\r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiReadMsr):\r
      rdmsr  \r
      shl    $0x20,%rdx\r
      or     %rdx,%rax\r
      retq   \r
      \r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiWriteMsr (\r
#    IN   UINT32  Index,  // rcx\r
#    IN   UINT64  Value   // rdx\r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiWriteMsr):\r
      mov    %rdx,%rax\r
      sar    $0x20,%rdx\r
      wrmsr  \r
      retq \r
\r
#------------------------------------------------------------------------------\r
# UINT64\r
# EfiReadTsc (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiReadTsc):\r
      rdtsc  \r
      shl    $0x20,%rax\r
      shrd   $0x20,%rdx,%rax\r
      retq   \r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EfiDisableCache (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiDisableCache):\r
# added a check to see if cache is already disabled. If it is, then skip.\r
      mov    %cr0,%rax\r
      and    $0x60000000,%rax\r
      cmp    $0x0,%rax\r
      jne    1f\r
      mov    %cr0,%rax\r
      or     $0x60000000,%rax\r
      mov    %rax,%cr0\r
      wbinvd \r
1:\r
      retq   \r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EfiEnableCache (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiEnableCache):\r
      wbinvd   \r
      mov    %cr0,%rax\r
      and    $0xffffffff9fffffff,%rax\r
      mov    %rax,%cr0\r
      retq   \r
\r
#------------------------------------------------------------------------------\r
# UINTN\r
# EfiGetEflags (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiGetEflags):\r
      pushfq \r
      pop    %rax\r
      retq   \r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EfiDisableInterrupts (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiDisableInterrupts):\r
    cli\r
    ret\r
\r
#------------------------------------------------------------------------------\r
# VOID\r
# EfiEnableInterrupts (\r
#   VOID\r
#   );\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiEnableInterrupts):\r
    sti\r
    ret\r
#------------------------------------------------------------------------------\r
#  VOID\r
#  EfiCpuidExt (\r
#    IN   UINT32              RegisterInEax,\r
#    IN   UINT32              CacheLevel,\r
#    OUT  EFI_CPUID_REGISTER  *Regs              \r
#    )\r
#------------------------------------------------------------------------------\r
ASM_PFX(EfiCpuidExt):\r
      push   %rbx\r
      mov    %rcx,%rax\r
      mov    %rdx,%rcx\r
      cpuid  \r
      mov    %eax,(%r8)\r
      mov    %ebx,0x4(%r8)\r
      mov    %ecx,0x8(%r8)\r
      mov    %edx,0xc(%r8)\r
      pop    %rbx\r
      retq   \r
Commit	Line	Data
b341712e	1	#------------------------------------------------------------------------------\r
b341712e	2	#*\r
3e99020d	3	#* Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>\r
f57387d5	4	#* This program and the accompanying materials \r
b341712e	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	#* Cpu.asm\r
	15	#* \r
	16	#* Abstract:\r
	17	#* \r
	18	#------------------------------------------------------------------------------\r
	19	#include <EfiBind.h>\r
	20	\r
	21	.globl ASM_PFX(EfiHalt)\r
	22	.globl ASM_PFX(EfiWbinvd)\r
	23	.globl ASM_PFX(EfiInvd)\r
	24	.globl ASM_PFX(EfiCpuid)\r
	25	.globl ASM_PFX(EfiReadTsc)\r
	26	.globl ASM_PFX(EfiDisableCache)\r
	27	.globl ASM_PFX(EfiEnableCache)\r
	28	.globl ASM_PFX(EfiReadMsr)\r
	29	.globl ASM_PFX(EfiGetEflags)\r
	30	.globl ASM_PFX(EfiDisableInterrupts)\r
	31	.globl ASM_PFX(EfiEnableInterrupts)\r
	32	.globl ASM_PFX(EfiCpuidExt)\r
	33	\r
	34	.text\r
	35	\r
	36	\r
	37	#------------------------------------------------------------------------------\r
	38	# VOID\r
	39	# EfiHalt (\r
	40	# VOID\r
	41	# )\r
	42	#------------------------------------------------------------------------------\r
	43	ASM_PFX(EfiHalt):\r
	44	hlt\r
	45	retq\r
	46	\r
	47	\r
	48	#------------------------------------------------------------------------------\r
	49	# VOID\r
	50	# EfiWbinvd (\r
	51	# VOID\r
	52	# )\r
	53	#------------------------------------------------------------------------------\r
	54	ASM_PFX(EfiWbinvd):\r
	55	wbinvd\r
	56	retq\r
	57	\r
	58	\r
	59	#------------------------------------------------------------------------------\r
	60	# VOID\r
	61	# EfiInvd (\r
	62	# VOID\r
	63	# )\r
	64	#------------------------------------------------------------------------------\r
	65	ASM_PFX(EfiInvd):\r
	66	invd\r
	67	retq\r
	68	\r
69	#------------------------------------------------------------------------------\r
70	# VOID\r
71	# EfiCpuid (\r
72	# IN UINT32 RegisterInEax, // rcx \r
73	# OUT EFI_CPUID_REGISTER *Reg OPTIONAL // rdx \r
74	# )\r
75	#------------------------------------------------------------------------------\r
76	ASM_PFX(EfiCpuid):\r
9a1ed798	77	push %rbx\r
	78	mov %rdx,%r8\r
	79	mov %rcx,%rax\r
	80	cpuid \r
	81	cmp $0x0,%r8\r
	82	je _Exit\r
	83	mov %eax,(%r8)\r
	84	mov %ebx,0x4(%r8)\r
	85	mov %ecx,0x8(%r8)\r
b341712e	86	mov %edx,0xc(%r8)\r
	87	_Exit: \r
	88	pop %rbx\r
	89	retq\r
	90	\r
	91	#------------------------------------------------------------------------------\r
	92	# UINT64\r
	93	# EfiReadMsr (\r
	94	# IN UINT32 Index, // rcx\r
	95	# )\r
	96	#------------------------------------------------------------------------------\r
	97	ASM_PFX(EfiReadMsr):\r
9a1ed798	98	rdmsr \r
	99	shl $0x20,%rdx\r
	100	or %rdx,%rax\r
	101	retq \r
b341712e	102	\r
	103	#------------------------------------------------------------------------------\r
	104	# VOID\r
	105	# EfiWriteMsr (\r
	106	# IN UINT32 Index, // rcx\r
	107	# IN UINT64 Value // rdx\r
	108	# )\r
	109	#------------------------------------------------------------------------------\r
	110	ASM_PFX(EfiWriteMsr):\r
9a1ed798	111	mov %rdx,%rax\r
	112	sar $0x20,%rdx\r
	113	wrmsr \r
b341712e	114	retq \r
	115	\r
	116	#------------------------------------------------------------------------------\r
	117	# UINT64\r
	118	# EfiReadTsc (\r
	119	# VOID\r
	120	# );\r
	121	#------------------------------------------------------------------------------\r
	122	ASM_PFX(EfiReadTsc):\r
9a1ed798	123	rdtsc \r
	124	shl $0x20,%rax\r
	125	shrd $0x20,%rdx,%rax\r
	126	retq \r
b341712e	127	\r
	128	#------------------------------------------------------------------------------\r
	129	# VOID\r
	130	# EfiDisableCache (\r
	131	# VOID\r
	132	# );\r
	133	#------------------------------------------------------------------------------\r
	134	ASM_PFX(EfiDisableCache):\r
	135	# added a check to see if cache is already disabled. If it is, then skip.\r
9a1ed798	136	mov %cr0,%rax\r
	137	and $0x60000000,%rax\r
	138	cmp $0x0,%rax\r
	139	jne 1f\r
	140	mov %cr0,%rax\r
	141	or $0x60000000,%rax\r
	142	mov %rax,%cr0\r
	143	wbinvd \r
b341712e	144	1:\r
9a1ed798	145	retq \r
b341712e	146	\r
	147	#------------------------------------------------------------------------------\r
	148	# VOID\r
	149	# EfiEnableCache (\r
	150	# VOID\r
	151	# );\r
	152	#------------------------------------------------------------------------------\r
	153	ASM_PFX(EfiEnableCache):\r
3e99020d	154	wbinvd \r
9a1ed798	155	mov %cr0,%rax\r
	156	and $0xffffffff9fffffff,%rax\r
	157	mov %rax,%cr0\r
	158	retq \r
b341712e	159	\r
	160	#------------------------------------------------------------------------------\r
	161	# UINTN\r
	162	# EfiGetEflags (\r
	163	# VOID\r
	164	# );\r
	165	#------------------------------------------------------------------------------\r
	166	ASM_PFX(EfiGetEflags):\r
9a1ed798	167	pushfq \r
	168	pop %rax\r
	169	retq \r
b341712e	170	\r
	171	#------------------------------------------------------------------------------\r
	172	# VOID\r
	173	# EfiDisableInterrupts (\r
	174	# VOID\r
	175	# );\r
	176	#------------------------------------------------------------------------------\r
	177	ASM_PFX(EfiDisableInterrupts):\r
	178	cli\r
	179	ret\r
	180	\r
	181	#------------------------------------------------------------------------------\r
	182	# VOID\r
	183	# EfiEnableInterrupts (\r
	184	# VOID\r
	185	# );\r
	186	#------------------------------------------------------------------------------\r
	187	ASM_PFX(EfiEnableInterrupts):\r
	188	sti\r
	189	ret\r
	190	#------------------------------------------------------------------------------\r
	191	# VOID\r
	192	# EfiCpuidExt (\r
	193	# IN UINT32 RegisterInEax,\r
	194	# IN UINT32 CacheLevel,\r
	195	# OUT EFI_CPUID_REGISTER *Regs \r
	196	# )\r
	197	#------------------------------------------------------------------------------\r
	198	ASM_PFX(EfiCpuidExt):\r
9a1ed798	199	push %rbx\r
	200	mov %rcx,%rax\r
	201	mov %rdx,%rcx\r
	202	cpuid \r
	203	mov %eax,(%r8)\r
	204	mov %ebx,0x4(%r8)\r
	205	mov %ecx,0x8(%r8)\r
	206	mov %edx,0xc(%r8)\r
	207	pop %rbx\r
	208	retq \r