selftests/powerpc: Rework FPU stack placement macros and move to header file

[cascardo/linux.git] / tools / testing / selftests / powerpc / fpu_asm.h

diff --git a/tools/testing/selftests/powerpc/fpu_asm.h b/tools/testing/selftests/powerpc/fpu_asm.h
new file mode 100644 (file)
index 0000000..6a387d2
--- /dev/null
+++ b/tools/testing/selftests/powerpc/fpu_asm.h
@@ -0,0 +1,80 @@
+/*
+ * 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_FPU_ASM_H
+#define _SELFTESTS_POWERPC_FPU_ASM_H
+#include "basic_asm.h"
+
+#define PUSH_FPU(stack_size) \
+       stfd    f31,(stack_size + STACK_FRAME_MIN_SIZE)(%r1); \
+       stfd    f30,(stack_size + STACK_FRAME_MIN_SIZE - 8)(%r1); \
+       stfd    f29,(stack_size + STACK_FRAME_MIN_SIZE - 16)(%r1); \
+       stfd    f28,(stack_size + STACK_FRAME_MIN_SIZE - 24)(%r1); \
+       stfd    f27,(stack_size + STACK_FRAME_MIN_SIZE - 32)(%r1); \
+       stfd    f26,(stack_size + STACK_FRAME_MIN_SIZE - 40)(%r1); \
+       stfd    f25,(stack_size + STACK_FRAME_MIN_SIZE - 48)(%r1); \
+       stfd    f24,(stack_size + STACK_FRAME_MIN_SIZE - 56)(%r1); \
+       stfd    f23,(stack_size + STACK_FRAME_MIN_SIZE - 64)(%r1); \
+       stfd    f22,(stack_size + STACK_FRAME_MIN_SIZE - 72)(%r1); \
+       stfd    f21,(stack_size + STACK_FRAME_MIN_SIZE - 80)(%r1); \
+       stfd    f20,(stack_size + STACK_FRAME_MIN_SIZE - 88)(%r1); \
+       stfd    f19,(stack_size + STACK_FRAME_MIN_SIZE - 96)(%r1); \
+       stfd    f18,(stack_size + STACK_FRAME_MIN_SIZE - 104)(%r1); \
+       stfd    f17,(stack_size + STACK_FRAME_MIN_SIZE - 112)(%r1); \
+       stfd    f16,(stack_size + STACK_FRAME_MIN_SIZE - 120)(%r1); \
+       stfd    f15,(stack_size + STACK_FRAME_MIN_SIZE - 128)(%r1); \
+       stfd    f14,(stack_size + STACK_FRAME_MIN_SIZE - 136)(%r1);
+
+#define POP_FPU(stack_size) \
+       lfd     f31,(stack_size + STACK_FRAME_MIN_SIZE)(%r1); \
+       lfd     f30,(stack_size + STACK_FRAME_MIN_SIZE - 8)(%r1); \
+       lfd     f29,(stack_size + STACK_FRAME_MIN_SIZE - 16)(%r1); \
+       lfd     f28,(stack_size + STACK_FRAME_MIN_SIZE - 24)(%r1); \
+       lfd     f27,(stack_size + STACK_FRAME_MIN_SIZE - 32)(%r1); \
+       lfd     f26,(stack_size + STACK_FRAME_MIN_SIZE - 40)(%r1); \
+       lfd     f25,(stack_size + STACK_FRAME_MIN_SIZE - 48)(%r1); \
+       lfd     f24,(stack_size + STACK_FRAME_MIN_SIZE - 56)(%r1); \
+       lfd     f23,(stack_size + STACK_FRAME_MIN_SIZE - 64)(%r1); \
+       lfd     f22,(stack_size + STACK_FRAME_MIN_SIZE - 72)(%r1); \
+       lfd     f21,(stack_size + STACK_FRAME_MIN_SIZE - 80)(%r1); \
+       lfd     f20,(stack_size + STACK_FRAME_MIN_SIZE - 88)(%r1); \
+       lfd     f19,(stack_size + STACK_FRAME_MIN_SIZE - 96)(%r1); \
+       lfd     f18,(stack_size + STACK_FRAME_MIN_SIZE - 104)(%r1); \
+       lfd     f17,(stack_size + STACK_FRAME_MIN_SIZE - 112)(%r1); \
+       lfd     f16,(stack_size + STACK_FRAME_MIN_SIZE - 120)(%r1); \
+       lfd     f15,(stack_size + STACK_FRAME_MIN_SIZE - 128)(%r1); \
+       lfd     f14,(stack_size + STACK_FRAME_MIN_SIZE - 136)(%r1);
+
+/*
+ * Careful calling this, it will 'clobber' fpu (by design)
+ * Don't call this from C
+ */
+FUNC_START(load_fpu)
+       lfd     f14,0(r3)
+       lfd     f15,8(r3)
+       lfd     f16,16(r3)
+       lfd     f17,24(r3)
+       lfd     f18,32(r3)
+       lfd     f19,40(r3)
+       lfd     f20,48(r3)
+       lfd     f21,56(r3)
+       lfd     f22,64(r3)
+       lfd     f23,72(r3)
+       lfd     f24,80(r3)
+       lfd     f25,88(r3)
+       lfd     f26,96(r3)
+       lfd     f27,104(r3)
+       lfd     f28,112(r3)
+       lfd     f29,120(r3)
+       lfd     f30,128(r3)
+       lfd     f31,136(r3)
+       blr
+FUNC_END(load_fpu)
+
+#endif /* _SELFTESTS_POWERPC_FPU_ASM_H */