[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(EfiWriteMsr)\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
58e3a186	29	.globl ASM_PFX(EfiWriteMsr)\r
b341712e	30	.globl ASM_PFX(EfiGetEflags)\r
	31	.globl ASM_PFX(EfiDisableInterrupts)\r
	32	.globl ASM_PFX(EfiEnableInterrupts)\r
	33	.globl ASM_PFX(EfiCpuidExt)\r
	34	\r
	35	.text\r
	36	\r
	37	\r
	38	#------------------------------------------------------------------------------\r
	39	# VOID\r
	40	# EfiHalt (\r
	41	# VOID\r
	42	# )\r
	43	#------------------------------------------------------------------------------\r
	44	ASM_PFX(EfiHalt):\r
	45	hlt\r
	46	retq\r
	47	\r
	48	\r
	49	#------------------------------------------------------------------------------\r
	50	# VOID\r
	51	# EfiWbinvd (\r
	52	# VOID\r
	53	# )\r
	54	#------------------------------------------------------------------------------\r
	55	ASM_PFX(EfiWbinvd):\r
	56	wbinvd\r
	57	retq\r
	58	\r
	59	\r
	60	#------------------------------------------------------------------------------\r
	61	# VOID\r
	62	# EfiInvd (\r
	63	# VOID\r
	64	# )\r
	65	#------------------------------------------------------------------------------\r
	66	ASM_PFX(EfiInvd):\r
	67	invd\r
	68	retq\r
	69	\r
	70	#------------------------------------------------------------------------------\r
	71	# VOID\r
	72	# EfiCpuid (\r
	73	# IN UINT32 RegisterInEax, // rcx \r
	74	# OUT EFI_CPUID_REGISTER *Reg OPTIONAL // rdx \r
	75	# )\r
	76	#------------------------------------------------------------------------------\r
	77	ASM_PFX(EfiCpuid):\r
9a1ed798	78	push %rbx\r
	79	mov %rdx,%r8\r
	80	mov %rcx,%rax\r
	81	cpuid \r
	82	cmp $0x0,%r8\r
	83	je _Exit\r
	84	mov %eax,(%r8)\r
	85	mov %ebx,0x4(%r8)\r
	86	mov %ecx,0x8(%r8)\r
b341712e	87	mov %edx,0xc(%r8)\r
	88	_Exit: \r
	89	pop %rbx\r
	90	retq\r
	91	\r
	92	#------------------------------------------------------------------------------\r
	93	# UINT64\r
	94	# EfiReadMsr (\r
	95	# IN UINT32 Index, // rcx\r
	96	# )\r
	97	#------------------------------------------------------------------------------\r
	98	ASM_PFX(EfiReadMsr):\r
9a1ed798	99	rdmsr \r
	100	shl $0x20,%rdx\r
	101	or %rdx,%rax\r
	102	retq \r
b341712e	103	\r
	104	#------------------------------------------------------------------------------\r
	105	# VOID\r
	106	# EfiWriteMsr (\r
	107	# IN UINT32 Index, // rcx\r
	108	# IN UINT64 Value // rdx\r
	109	# )\r
	110	#------------------------------------------------------------------------------\r
	111	ASM_PFX(EfiWriteMsr):\r
9a1ed798	112	mov %rdx,%rax\r
	113	sar $0x20,%rdx\r
	114	wrmsr \r
b341712e	115	retq \r
	116	\r
	117	#------------------------------------------------------------------------------\r
	118	# UINT64\r
	119	# EfiReadTsc (\r
	120	# VOID\r
	121	# );\r
	122	#------------------------------------------------------------------------------\r
	123	ASM_PFX(EfiReadTsc):\r
9a1ed798	124	rdtsc \r
	125	shl $0x20,%rax\r
	126	shrd $0x20,%rdx,%rax\r
	127	retq \r
b341712e	128	\r
	129	#------------------------------------------------------------------------------\r
	130	# VOID\r
	131	# EfiDisableCache (\r
	132	# VOID\r
	133	# );\r
	134	#------------------------------------------------------------------------------\r
	135	ASM_PFX(EfiDisableCache):\r
	136	# added a check to see if cache is already disabled. If it is, then skip.\r
9a1ed798	137	mov %cr0,%rax\r
	138	and $0x60000000,%rax\r
	139	cmp $0x0,%rax\r
	140	jne 1f\r
	141	mov %cr0,%rax\r
	142	or $0x60000000,%rax\r
	143	mov %rax,%cr0\r
	144	wbinvd \r
b341712e	145	1:\r
9a1ed798	146	retq \r
b341712e	147	\r
	148	#------------------------------------------------------------------------------\r
	149	# VOID\r
	150	# EfiEnableCache (\r
	151	# VOID\r
	152	# );\r
	153	#------------------------------------------------------------------------------\r
	154	ASM_PFX(EfiEnableCache):\r
3e99020d	155	wbinvd \r
9a1ed798	156	mov %cr0,%rax\r
	157	and $0xffffffff9fffffff,%rax\r
	158	mov %rax,%cr0\r
	159	retq \r
b341712e	160	\r
	161	#------------------------------------------------------------------------------\r
	162	# UINTN\r
	163	# EfiGetEflags (\r
	164	# VOID\r
	165	# );\r
	166	#------------------------------------------------------------------------------\r
	167	ASM_PFX(EfiGetEflags):\r
9a1ed798	168	pushfq \r
	169	pop %rax\r
	170	retq \r
b341712e	171	\r
	172	#------------------------------------------------------------------------------\r
	173	# VOID\r
	174	# EfiDisableInterrupts (\r
	175	# VOID\r
	176	# );\r
	177	#------------------------------------------------------------------------------\r
	178	ASM_PFX(EfiDisableInterrupts):\r
	179	cli\r
	180	ret\r
	181	\r
	182	#------------------------------------------------------------------------------\r
	183	# VOID\r
	184	# EfiEnableInterrupts (\r
	185	# VOID\r
	186	# );\r
	187	#------------------------------------------------------------------------------\r
	188	ASM_PFX(EfiEnableInterrupts):\r
	189	sti\r
	190	ret\r
	191	#------------------------------------------------------------------------------\r
	192	# VOID\r
	193	# EfiCpuidExt (\r
	194	# IN UINT32 RegisterInEax,\r
	195	# IN UINT32 CacheLevel,\r
	196	# OUT EFI_CPUID_REGISTER *Regs \r
	197	# )\r
	198	#------------------------------------------------------------------------------\r
	199	ASM_PFX(EfiCpuidExt):\r
9a1ed798	200	push %rbx\r
	201	mov %rcx,%rax\r
	202	mov %rdx,%rcx\r
	203	cpuid \r
	204	mov %eax,(%r8)\r
	205	mov %ebx,0x4(%r8)\r
	206	mov %ecx,0x8(%r8)\r
	207	mov %edx,0xc(%r8)\r
	208	pop %rbx\r
	209	retq \r