projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 96cf5185 G |
2 | /* |
| 3 | * linux/arch/unicore32/include/asm/assembler.h | |
| 4 | * | |
| 5 | * Code specific to PKUnity SoC and UniCore ISA | |
| 6 | * | |
| 7 | * Copyright (C) 2001-2010 GUAN Xue-tao | |
| 8 | * | |
| 96cf5185 G |
9 | * Do not include any C declarations in this file - it is included by |
| 10 | * assembler source. | |
| 11 | */ | |
| 12 | #ifndef __ASSEMBLY__ | |
| 13 | #error "Only include this from assembly code" | |
| 14 | #endif | |
| 15 | ||
| 16 | #include <asm/ptrace.h> | |
| 17 | ||
| 18 | /* | |
| 19 | * Little Endian independent macros for shifting bytes within registers. | |
| 20 | */ | |
| 21 | #define pull >> | |
| 22 | #define push << | |
| 23 | #define get_byte_0 << #0 | |
| 24 | #define get_byte_1 >> #8 | |
| 25 | #define get_byte_2 >> #16 | |
| 26 | #define get_byte_3 >> #24 | |
| 27 | #define put_byte_0 << #0 | |
| 28 | #define put_byte_1 << #8 | |
| 29 | #define put_byte_2 << #16 | |
| 30 | #define put_byte_3 << #24 | |
| 31 | ||
| 32 | #define cadd cmpadd | |
| 33 | #define cand cmpand | |
| 34 | #define csub cmpsub | |
| 35 | #define cxor cmpxor | |
| 36 | ||
| 37 | /* | |
| 38 | * Enable and disable interrupts | |
| 39 | */ | |
| 40 | .macro disable_irq, temp | |
| 41 | mov \temp, asr | |
| 42 | andn \temp, \temp, #0xFF | |
| 43 | or \temp, \temp, #PSR_I_BIT | PRIV_MODE | |
| 44 | mov.a asr, \temp | |
| 45 | .endm | |
| 46 | ||
| 47 | .macro enable_irq, temp | |
| 48 | mov \temp, asr | |
| 49 | andn \temp, \temp, #0xFF | |
| 50 | or \temp, \temp, #PRIV_MODE | |
| 51 | mov.a asr, \temp | |
| 52 | .endm | |
| 53 | ||
| 54 | #define USER(x...) \ | |
| 55 | 9999: x; \ | |
| 56 | .pushsection __ex_table, "a"; \ | |
| 57 | .align 3; \ | |
| 58 | .long 9999b, 9001f; \ | |
| 59 | .popsection | |
| 60 | ||
| 61 | .macro notcond, cond, nexti = .+8 | |
| 62 | .ifc \cond, eq | |
| 63 | bne \nexti | |
| 64 | .else; .ifc \cond, ne | |
| 65 | beq \nexti | |
| 66 | .else; .ifc \cond, ea | |
| 67 | bub \nexti | |
| 68 | .else; .ifc \cond, ub | |
| 69 | bea \nexti | |
| 70 | .else; .ifc \cond, fs | |
| 71 | bns \nexti | |
| 72 | .else; .ifc \cond, ns | |
| 73 | bfs \nexti | |
| 74 | .else; .ifc \cond, fv | |
| 75 | bnv \nexti | |
| 76 | .else; .ifc \cond, nv | |
| 77 | bfv \nexti | |
| 78 | .else; .ifc \cond, ua | |
| 79 | beb \nexti | |
| 80 | .else; .ifc \cond, eb | |
| 81 | bua \nexti | |
| 82 | .else; .ifc \cond, eg | |
| 83 | bsl \nexti | |
| 84 | .else; .ifc \cond, sl | |
| 85 | beg \nexti | |
| 86 | .else; .ifc \cond, sg | |
| 87 | bel \nexti | |
| 88 | .else; .ifc \cond, el | |
| 89 | bsg \nexti | |
| 90 | .else; .ifnc \cond, al | |
| 91 | .error "Unknown cond in notcond macro argument" | |
| 92 | .endif; .endif; .endif; .endif; .endif; .endif; .endif | |
| 93 | .endif; .endif; .endif; .endif; .endif; .endif; .endif | |
| 94 | .endif | |
| 95 | .endm | |
| 96 | ||
| 97 | .macro usracc, instr, reg, ptr, inc, cond, rept, abort | |
| 98 | .rept \rept | |
| 99 | notcond \cond, .+8 | |
| 100 | 9999 : | |
| 101 | .if \inc == 1 | |
| 102 | \instr\()b.u \reg, [\ptr], #\inc | |
| 103 | .elseif \inc == 4 | |
| 104 | \instr\()w.u \reg, [\ptr], #\inc | |
| 105 | .else | |
| 106 | .error "Unsupported inc macro argument" | |
| 107 | .endif | |
| 108 | ||
| 109 | .pushsection __ex_table, "a" | |
| 110 | .align 3 | |
| 111 | .long 9999b, \abort | |
| 112 | .popsection | |
| 113 | .endr | |
| 114 | .endm | |
| 115 | ||
| 116 | .macro strusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f | |
| 117 | usracc st, \reg, \ptr, \inc, \cond, \rept, \abort | |
| 118 | .endm | |
| 119 | ||
| 120 | .macro ldrusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f | |
| 121 | usracc ld, \reg, \ptr, \inc, \cond, \rept, \abort | |
| 122 | .endm | |
| 123 | ||
| 124 | .macro nop8 | |
| 125 | .rept 8 | |
| 126 | nop | |
| 127 | .endr | |
| 128 | .endm |