arch/score/include/asm/asmmacro.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SCORE_ASMMACRO_H
   3 #define _ASM_SCORE_ASMMACRO_H
   4
   5 #include <asm/asm-offsets.h>
   6
   7 #ifdef __ASSEMBLY__
   8
   9 .macro  SAVE_ALL
  10         mfcr    r30, cr0
  11         mv      r31, r0
  12         nop
  13         /* if UMs == 1, change stack. */
  14         slli.c  r30, r30, 28
  15         bpl     1f
  16         la      r31, kernelsp
  17         lw      r31, [r31]
  18 1:
  19         mv      r30, r0
  20         addri   r0, r31, -PT_SIZE
  21
  22         sw      r30, [r0, PT_R0]
  23         .set    r1
  24         sw      r1, [r0, PT_R1]
  25         .set    nor1
  26         sw      r2, [r0, PT_R2]
  27         sw      r3, [r0, PT_R3]
  28         sw      r4, [r0, PT_R4]
  29         sw      r5, [r0, PT_R5]
  30         sw      r6, [r0, PT_R6]
  31         sw      r7, [r0, PT_R7]
  32
  33         sw      r8, [r0, PT_R8]
  34         sw      r9, [r0, PT_R9]
  35         sw      r10, [r0, PT_R10]
  36         sw      r11, [r0, PT_R11]
  37         sw      r12, [r0, PT_R12]
  38         sw      r13, [r0, PT_R13]
  39         sw      r14, [r0, PT_R14]
  40         sw      r15, [r0, PT_R15]
  41
  42         sw      r16, [r0, PT_R16]
  43         sw      r17, [r0, PT_R17]
  44         sw      r18, [r0, PT_R18]
  45         sw      r19, [r0, PT_R19]
  46         sw      r20, [r0, PT_R20]
  47         sw      r21, [r0, PT_R21]
  48         sw      r22, [r0, PT_R22]
  49         sw      r23, [r0, PT_R23]
  50
  51         sw      r24, [r0, PT_R24]
  52         sw      r25, [r0, PT_R25]
  53         sw      r25, [r0, PT_R25]
  54         sw      r26, [r0, PT_R26]
  55         sw      r27, [r0, PT_R27]
  56
  57         sw      r28, [r0, PT_R28]
  58         sw      r29, [r0, PT_R29]
  59         orri    r28, r0, 0x1fff
  60         li      r31, 0x00001fff
  61         xor     r28, r28, r31
  62
  63         mfcehl  r30, r31
  64         sw      r30, [r0, PT_CEH]
  65         sw      r31, [r0, PT_CEL]
  66
  67         mfcr    r31, cr0
  68         sw      r31, [r0, PT_PSR]
  69
  70         mfcr    r31, cr1
  71         sw      r31, [r0, PT_CONDITION]
  72
  73         mfcr    r31, cr2
  74         sw      r31, [r0, PT_ECR]
  75
  76         mfcr    r31, cr5
  77         srli    r31, r31, 1
  78         slli    r31, r31, 1
  79         sw      r31, [r0, PT_EPC]
  80 .endm
  81
  82 .macro  RESTORE_ALL_AND_RET
  83         mfcr    r30, cr0
  84         srli    r30, r30, 1
  85         slli    r30, r30, 1
  86         mtcr    r30, cr0
  87         nop
  88         nop
  89         nop
  90         nop
  91         nop
  92
  93         .set    r1
  94         ldis    r1, 0x00ff
  95         and     r30, r30, r1
  96         not     r1, r1
  97         lw      r31, [r0, PT_PSR]
  98         and     r31, r31, r1
  99         .set    nor1
 100         or      r31, r31, r30
 101         mtcr    r31, cr0
 102         nop
 103         nop
 104         nop
 105         nop
 106         nop
 107
 108         lw      r30, [r0, PT_CONDITION]
 109         mtcr    r30, cr1
 110         nop
 111         nop
 112         nop
 113         nop
 114         nop
 115
 116         lw      r30, [r0, PT_CEH]
 117         lw      r31, [r0, PT_CEL]
 118         mtcehl  r30, r31
 119
 120         .set    r1
 121         lw      r1, [r0, PT_R1]
 122         .set    nor1
 123         lw      r2, [r0, PT_R2]
 124         lw      r3, [r0, PT_R3]
 125         lw      r4, [r0, PT_R4]
 126         lw      r5, [r0, PT_R5]
 127         lw      r6, [r0, PT_R6]
 128         lw      r7, [r0, PT_R7]
 129
 130         lw      r8, [r0, PT_R8]
 131         lw      r9, [r0, PT_R9]
 132         lw      r10, [r0, PT_R10]
 133         lw      r11, [r0, PT_R11]
 134         lw      r12, [r0, PT_R12]
 135         lw      r13, [r0, PT_R13]
 136         lw      r14, [r0, PT_R14]
 137         lw      r15, [r0, PT_R15]
 138
 139         lw      r16, [r0, PT_R16]
 140         lw      r17, [r0, PT_R17]
 141         lw      r18, [r0, PT_R18]
 142         lw      r19, [r0, PT_R19]
 143         lw      r20, [r0, PT_R20]
 144         lw      r21, [r0, PT_R21]
 145         lw      r22, [r0, PT_R22]
 146         lw      r23, [r0, PT_R23]
 147
 148         lw      r24, [r0, PT_R24]
 149         lw      r25, [r0, PT_R25]
 150         lw      r26, [r0, PT_R26]
 151         lw      r27, [r0, PT_R27]
 152         lw      r28, [r0, PT_R28]
 153         lw      r29, [r0, PT_R29]
 154
 155         lw      r30, [r0, PT_EPC]
 156         lw      r0, [r0, PT_R0]
 157         mtcr    r30, cr5
 158         rte
 159 .endm
 160
 161 #endif /* __ASSEMBLY__ */
 162 #endif /* _ASM_SCORE_ASMMACRO_H */