projects / mirror_edk2.git / blame
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|---|---|---|
| e8de4680 A |
1 | #------------------------------------------------------------------------------ |
| 2 | # | |
| 3e99020d | 3 | # Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR> |
| 4ea9375a | 4 | # This program and the accompanying materials |
| e8de4680 A |
5 | # are licensed and made available under the terms and conditions of the BSD License |
| 6 | # which accompanies this distribution. The full text of the license may be found at | |
| 7 | # http://opensource.org/licenses/bsd-license.php | |
| 8 | # | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| 11 | # | |
| 12 | # Module Name: | |
| 13 | # ProcessorAsms.S | |
| 14 | # | |
| 15 | # Abstract: | |
| 16 | # This is separated from processor.c to allow this functions to be built with /O1 | |
| 17 | # | |
| 18 | # | |
| 19 | #------------------------------------------------------------------------------ | |
| 20 | #include <EfiBind.h> | |
| 21 | ||
| 22 | .text | |
| 23 | ||
| 24 | .globl ASM_PFX(SwitchStacks) | |
| 25 | .globl ASM_PFX(TransferControlSetJump) | |
| 26 | .globl ASM_PFX(TransferControlLongJump) | |
| 27 | ||
| 28 | # | |
| 29 | # Routine Description: | |
| 30 | # This allows the caller to switch the stack and goes to the new entry point | |
| 31 | # | |
| 32 | # Arguments: | |
| 33 | # EntryPoint - Pointer to the location to enter // rcx | |
| 34 | # Parameter - Parameter to pass in // rdx | |
| 35 | # NewStack - New Location of the stack // r8 | |
| 36 | # NewBsp - New BSP // r9 - not used | |
| 37 | # | |
| 38 | # Returns: | |
| 39 | # Nothing. Goes to the Entry Point passing in the new parameters | |
| 40 | # | |
| 41 | ASM_PFX(SwitchStacks): | |
| 42 | ||
| 43 | # Adjust stack for | |
| 44 | # 1) leave 4 registers space | |
| 45 | # 2) let it 16 bytes aligned after call | |
| 46 | sub $0x20,%r8 | |
| 47 | and -0x10,%r8w # do not assume 16 bytes aligned | |
| 48 | ||
| 49 | mov %r8,%rsp | |
| 50 | mov %rcx,%r10 | |
| 51 | mov %rdx,%rcx | |
| 52 | callq *%r10 | |
| 53 | ||
| 54 | # | |
| 55 | # no ret as we have a new stack and we jumped to the new location | |
| 56 | # | |
| 57 | ret | |
| 58 | ||
| 59 | #SwitchStacks ENDP | |
| 60 | ||
| 61 | ||
| 271d2c7f | 62 | .set EFI_SUCCESS, 0 |
| 63 | .set EFI_WARN_RETURN_FROM_LONG_JUMP, 5 | |
| e8de4680 A |
64 | |
| 65 | # | |
| 66 | #Routine Description: | |
| 67 | # | |
| 68 | # This routine implements the x64 variant of the SetJump call. Its | |
| 69 | # responsibility is to store system state information for a possible | |
| 70 | # subsequent LongJump. | |
| 71 | # | |
| 72 | #Arguments: | |
| 73 | # | |
| 74 | # Pointer to CPU context save buffer. | |
| 75 | # | |
| 76 | #Returns: | |
| 77 | # | |
| 78 | # EFI_SUCCESS | |
| 79 | # | |
| 80 | # EFI_STATUS | |
| 81 | # EFIAPI | |
| 82 | # TransferControlLongJump ( | |
| 83 | # IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, | |
| 84 | # IN EFI_JUMP_BUFFER *Jump | |
| 85 | # ); | |
| 86 | # | |
| 87 | # rcx - *This | |
| 88 | # rdx - JumpBuffer | |
| 89 | # | |
| 90 | ASM_PFX(TransferControlSetJump): | |
| 91 | mov %rbx,(%rdx) | |
| 92 | mov %rsp,0x8(%rdx) | |
| 93 | mov %rbp,0x10(%rdx) | |
| 94 | mov %rdi,0x18(%rdx) | |
| 95 | mov %rsi,0x20(%rdx) | |
| 96 | mov %r10,0x28(%rdx) | |
| 97 | mov %r11,0x30(%rdx) | |
| 98 | mov %r12,0x38(%rdx) | |
| 99 | mov %r13,0x40(%rdx) | |
| 100 | mov %r14,0x48(%rdx) | |
| 101 | mov %r15,0x50(%rdx) | |
| 271d2c7f | 102 | #; save non-volatile fp registers |
| 103 | stmxcsr 0x60(%rdx) | |
| 104 | lea 0x68(%rdx), %rax | |
| 105 | movdqu %xmm6, (%rax) | |
| 106 | movdqu %xmm7, 0x10(%rax) | |
| 107 | movdqu %xmm8, 0x20(%rax) | |
| 108 | movdqu %xmm9, 0x30(%rax) | |
| 109 | movdqu %xmm10, 0x40(%rax) | |
| 110 | movdqu %xmm11, 0x50(%rax) | |
| 111 | movdqu %xmm12, 0x60(%rax) | |
| 112 | movdqu %xmm13, 0x70(%rax) | |
| 113 | movdqu %xmm14, 0x80(%rax) | |
| 114 | movdqu %xmm15, 0x90(%rax) | |
| e8de4680 A |
115 | mov (%rsp),%rax |
| 116 | mov %rax,0x58(%rdx) | |
| 117 | mov $0x0,%rax | |
| 118 | retq | |
| 119 | ||
| 120 | ||
| 121 | # | |
| 122 | # EFI_STATUS | |
| 123 | # EFIAPI | |
| 124 | # TransferControlLongJump ( | |
| 125 | # IN EFI_PEI_TRANSFER_CONTROL_PROTOCOL *This, // rcx | |
| 126 | # IN EFI_JUMP_BUFFER *Jump // rdx | |
| 127 | # ); | |
| 128 | # | |
| 129 | # | |
| 130 | ASM_PFX(TransferControlLongJump): | |
| 3e99020d | 131 | # set return from SetJump to EFI_WARN_RETURN_FROM_LONG_JUMP |
| 271d2c7f | 132 | #; load non-volatile fp registers |
| 133 | ldmxcsr 0x60(%rdx) | |
| 134 | lea 0x68(%rdx), %rax | |
| 135 | movdqu (%rax), %xmm6 | |
| 136 | movdqu 0x10(%rax), %xmm7 | |
| 137 | movdqu 0x20(%rax), %xmm8 | |
| 138 | movdqu 0x30(%rax), %xmm9 | |
| 139 | movdqu 0x40(%rax), %xmm10 | |
| 140 | movdqu 0x50(%rax), %xmm11 | |
| 141 | movdqu 0x60(%rax), %xmm12 | |
| 142 | movdqu 0x70(%rax), %xmm13 | |
| 143 | movdqu 0x80(%rax), %xmm14 | |
| 144 | movdqu 0x90(%rax), %xmm15 | |
| e8de4680 A |
145 | mov $0x5,%rax |
| 146 | mov (%rdx),%rbx | |
| 147 | mov 0x8(%rdx),%rsp | |
| 148 | mov 0x10(%rdx),%rbp | |
| 149 | mov 0x18(%rdx),%rdi | |
| 150 | mov 0x20(%rdx),%rsi | |
| 151 | mov 0x28(%rdx),%r10 | |
| 152 | mov 0x30(%rdx),%r11 | |
| 153 | mov 0x38(%rdx),%r12 | |
| 154 | mov 0x40(%rdx),%r13 | |
| 155 | mov 0x48(%rdx),%r14 | |
| 156 | mov 0x50(%rdx),%r15 | |
| 157 | add $0x8,%rsp | |
| 158 | jmpq *0x58(%rdx) | |
| 159 | mov $0x5,%rax | |
| 160 | retq | |
| 161 |