selftests/powerpc: Introduce GPR asm helper header file

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/tools/testing/selftests/powerpc/gpr_asm.h b/tools/testing/selftests/powerpc/gpr_asm.h
new file mode 100644 (file)
index 0000000..f6f3885
--- /dev/null
+++ b/tools/testing/selftests/powerpc/gpr_asm.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2016, Cyril Bur, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _SELFTESTS_POWERPC_GPR_ASM_H
+#define _SELFTESTS_POWERPC_GPR_ASM_H
+
+#include "basic_asm.h"
+
+#define __PUSH_NVREGS(top_pos); \
+       std r31,(top_pos)(%r1); \
+       std r30,(top_pos - 8)(%r1); \
+       std r29,(top_pos - 16)(%r1); \
+       std r28,(top_pos - 24)(%r1); \
+       std r27,(top_pos - 32)(%r1); \
+       std r26,(top_pos - 40)(%r1); \
+       std r25,(top_pos - 48)(%r1); \
+       std r24,(top_pos - 56)(%r1); \
+       std r23,(top_pos - 64)(%r1); \
+       std r22,(top_pos - 72)(%r1); \
+       std r21,(top_pos - 80)(%r1); \
+       std r20,(top_pos - 88)(%r1); \
+       std r19,(top_pos - 96)(%r1); \
+       std r18,(top_pos - 104)(%r1); \
+       std r17,(top_pos - 112)(%r1); \
+       std r16,(top_pos - 120)(%r1); \
+       std r15,(top_pos - 128)(%r1); \
+       std r14,(top_pos - 136)(%r1)
+
+#define __POP_NVREGS(top_pos); \
+       ld r31,(top_pos)(%r1); \
+       ld r30,(top_pos - 8)(%r1); \
+       ld r29,(top_pos - 16)(%r1); \
+       ld r28,(top_pos - 24)(%r1); \
+       ld r27,(top_pos - 32)(%r1); \
+       ld r26,(top_pos - 40)(%r1); \
+       ld r25,(top_pos - 48)(%r1); \
+       ld r24,(top_pos - 56)(%r1); \
+       ld r23,(top_pos - 64)(%r1); \
+       ld r22,(top_pos - 72)(%r1); \
+       ld r21,(top_pos - 80)(%r1); \
+       ld r20,(top_pos - 88)(%r1); \
+       ld r19,(top_pos - 96)(%r1); \
+       ld r18,(top_pos - 104)(%r1); \
+       ld r17,(top_pos - 112)(%r1); \
+       ld r16,(top_pos - 120)(%r1); \
+       ld r15,(top_pos - 128)(%r1); \
+       ld r14,(top_pos - 136)(%r1)
+
+#define PUSH_NVREGS(stack_size) \
+       __PUSH_NVREGS(stack_size + STACK_FRAME_MIN_SIZE)
+
+/* 18 NV FPU REGS */
+#define PUSH_NVREGS_BELOW_FPU(stack_size) \
+       __PUSH_NVREGS(stack_size + STACK_FRAME_MIN_SIZE - (18 * 8))
+
+#define POP_NVREGS(stack_size) \
+       __POP_NVREGS(stack_size + STACK_FRAME_MIN_SIZE)
+
+/* 18 NV FPU REGS */
+#define POP_NVREGS_BELOW_FPU(stack_size) \
+       __POP_NVREGS(stack_size + STACK_FRAME_MIN_SIZE - (18 * 8))
+
+/*
+ * Careful calling this, it will 'clobber' NVGPRs (by design)
+ * Don't call this from C
+ */
+FUNC_START(load_gpr)
+       ld      r14,0(r3)
+       ld      r15,8(r3)
+       ld      r16,16(r3)
+       ld      r17,24(r3)
+       ld      r18,32(r3)
+       ld      r19,40(r3)
+       ld      r20,48(r3)
+       ld      r21,56(r3)
+       ld      r22,64(r3)
+       ld      r23,72(r3)
+       ld      r24,80(r3)
+       ld      r25,88(r3)
+       ld      r26,96(r3)
+       ld      r27,104(r3)
+       ld      r28,112(r3)
+       ld      r29,120(r3)
+       ld      r30,128(r3)
+       ld      r31,136(r3)
+       blr
+FUNC_END(load_gpr)
+
+
+#endif /* _SELFTESTS_POWERPC_GPR_ASM_H */