tools/testing/selftests/powerpc/include/gpr_asm.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright 2016, Cyril Bur, IBM Corp.
   4  */
   5
   6 #ifndef _SELFTESTS_POWERPC_GPR_ASM_H
   7 #define _SELFTESTS_POWERPC_GPR_ASM_H
   8
   9 #include "basic_asm.h"
  10
  11 #define __PUSH_NVREGS(top_pos); \
  12         std r31,(top_pos)(%r1); \
  13         std r30,(top_pos - 8)(%r1); \
  14         std r29,(top_pos - 16)(%r1); \
  15         std r28,(top_pos - 24)(%r1); \
  16         std r27,(top_pos - 32)(%r1); \
  17         std r26,(top_pos - 40)(%r1); \
  18         std r25,(top_pos - 48)(%r1); \
  19         std r24,(top_pos - 56)(%r1); \
  20         std r23,(top_pos - 64)(%r1); \
  21         std r22,(top_pos - 72)(%r1); \
  22         std r21,(top_pos - 80)(%r1); \
  23         std r20,(top_pos - 88)(%r1); \
  24         std r19,(top_pos - 96)(%r1); \
  25         std r18,(top_pos - 104)(%r1); \
  26         std r17,(top_pos - 112)(%r1); \
  27         std r16,(top_pos - 120)(%r1); \
  28         std r15,(top_pos - 128)(%r1); \
  29         std r14,(top_pos - 136)(%r1)
  30
  31 #define __POP_NVREGS(top_pos); \
  32         ld r31,(top_pos)(%r1); \
  33         ld r30,(top_pos - 8)(%r1); \
  34         ld r29,(top_pos - 16)(%r1); \
  35         ld r28,(top_pos - 24)(%r1); \
  36         ld r27,(top_pos - 32)(%r1); \
  37         ld r26,(top_pos - 40)(%r1); \
  38         ld r25,(top_pos - 48)(%r1); \
  39         ld r24,(top_pos - 56)(%r1); \
  40         ld r23,(top_pos - 64)(%r1); \
  41         ld r22,(top_pos - 72)(%r1); \
  42         ld r21,(top_pos - 80)(%r1); \
  43         ld r20,(top_pos - 88)(%r1); \
  44         ld r19,(top_pos - 96)(%r1); \
  45         ld r18,(top_pos - 104)(%r1); \
  46         ld r17,(top_pos - 112)(%r1); \
  47         ld r16,(top_pos - 120)(%r1); \
  48         ld r15,(top_pos - 128)(%r1); \
  49         ld r14,(top_pos - 136)(%r1)
  50
  51 #define PUSH_NVREGS(stack_size) \
  52         __PUSH_NVREGS(stack_size + STACK_FRAME_MIN_SIZE)
  53
  54 /* 18 NV FPU REGS */
  55 #define PUSH_NVREGS_BELOW_FPU(stack_size) \
  56         __PUSH_NVREGS(stack_size + STACK_FRAME_MIN_SIZE - (18 * 8))
  57
  58 #define POP_NVREGS(stack_size) \
  59         __POP_NVREGS(stack_size + STACK_FRAME_MIN_SIZE)
  60
  61 /* 18 NV FPU REGS */
  62 #define POP_NVREGS_BELOW_FPU(stack_size) \
  63         __POP_NVREGS(stack_size + STACK_FRAME_MIN_SIZE - (18 * 8))
  64
  65 /*
  66  * Careful calling this, it will 'clobber' NVGPRs (by design)
  67  * Don't call this from C
  68  */
  69 FUNC_START(load_gpr)
  70         ld      r14,0(r3)
  71         ld      r15,8(r3)
  72         ld      r16,16(r3)
  73         ld      r17,24(r3)
  74         ld      r18,32(r3)
  75         ld      r19,40(r3)
  76         ld      r20,48(r3)
  77         ld      r21,56(r3)
  78         ld      r22,64(r3)
  79         ld      r23,72(r3)
  80         ld      r24,80(r3)
  81         ld      r25,88(r3)
  82         ld      r26,96(r3)
  83         ld      r27,104(r3)
  84         ld      r28,112(r3)
  85         ld      r29,120(r3)
  86         ld      r30,128(r3)
  87         ld      r31,136(r3)
  88         blr
  89 FUNC_END(load_gpr)
  90
  91
  92 #endif /* _SELFTESTS_POWERPC_GPR_ASM_H */