| | 1 | /** @file\r |
| | 2 | Macros to work around lack of Clang support for LDR register, =expr\r |
| | 3 | \r |
| | 4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
| | 5 | Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>\r |
| | 6 | Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>\r |
| | 7 | \r |
| | 8 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| | 9 | \r |
| | 10 | **/\r |
| | 11 | \r |
| | 12 | #ifndef ASM_MACRO_IO_LIBV8_H_\r |
| | 13 | #define ASM_MACRO_IO_LIBV8_H_\r |
| | 14 | \r |
| | 15 | // CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1\r |
| | 16 | // This only selects between EL1 and EL2, else we die.\r |
| | 17 | // Provide the Macro with a safe temp xreg to use.\r |
| | 18 | #define EL1_OR_EL2(SAFE_XREG) \\r |
| | 19 | mrs SAFE_XREG, CurrentEL ;\\r |
| | 20 | cmp SAFE_XREG, #0x8 ;\\r |
| | 21 | b.gt . ;\\r |
| | 22 | b.eq 2f ;\\r |
| | 23 | cbnz SAFE_XREG, 1f ;\\r |
| | 24 | b . ;// We should never get here\r |
| | 25 | \r |
| | 26 | // CurrentEL : 0xC = EL3; 8 = EL2; 4 = EL1\r |
| | 27 | // This only selects between EL1 and EL2 and EL3, else we die.\r |
| | 28 | // Provide the Macro with a safe temp xreg to use.\r |
| | 29 | #define EL1_OR_EL2_OR_EL3(SAFE_XREG) \\r |
| | 30 | mrs SAFE_XREG, CurrentEL ;\\r |
| | 31 | cmp SAFE_XREG, #0x8 ;\\r |
| | 32 | b.gt 3f ;\\r |
| | 33 | b.eq 2f ;\\r |
| | 34 | cbnz SAFE_XREG, 1f ;\\r |
| | 35 | b . ;// We should never get here\r |
| | 36 | \r |
| | 37 | #define _ASM_FUNC(Name, Section) \\r |
| | 38 | .global Name ; \\r |
| | 39 | .section #Section, "ax" ; \\r |
| | 40 | .type Name, %function ; \\r |
| | 41 | Name:\r |
| | 42 | \r |
| | 43 | #define ASM_FUNC(Name) _ASM_FUNC(ASM_PFX(Name), .text. ## Name)\r |
| | 44 | \r |
| | 45 | #define MOV32(Reg, Val) \\r |
| | 46 | movz Reg, (Val) >> 16, lsl #16 ; \\r |
| | 47 | movk Reg, (Val) & 0xffff\r |
| | 48 | \r |
| | 49 | #define MOV64(Reg, Val) \\r |
| | 50 | movz Reg, (Val) >> 48, lsl #48 ; \\r |
| | 51 | movk Reg, ((Val) >> 32) & 0xffff, lsl #32 ; \\r |
| | 52 | movk Reg, ((Val) >> 16) & 0xffff, lsl #16 ; \\r |
| | 53 | movk Reg, (Val) & 0xffff\r |
| | 54 | \r |
| | 55 | #endif // ASM_MACRO_IO_LIBV8_H_\r |
projects / mirror_edk2.git / blame_incremental