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

The FPU regs are placed at the top of the stack frame. Currently the
position expected to be passed to the macro. The macros now should be
passed the stack frame size and from there they can calculate where to
put the regs, this makes the use simpler.

Also move them to a header file to be used in an different area of the
powerpc selftests

Signed-off-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Cyril Bur 2016-09-23 16:18:14 +10:00 committed by Michael Ellerman
parent 65ca668f58
commit be4a9f5666
2 changed files with 85 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
tools/testing/selftests/powerpc/fpu_asm.h Normal file
View File

@ -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 */

73
tools/testing/selftests/powerpc/math/fpu_asm.S
View File

@ -8,70 +8,7 @@
*/
#include "../basic_asm.h"
#define PUSH_FPU(pos) \
stfd f14,pos(sp); \
stfd f15,pos+8(sp); \
stfd f16,pos+16(sp); \
stfd f17,pos+24(sp); \
stfd f18,pos+32(sp); \
stfd f19,pos+40(sp); \
stfd f20,pos+48(sp); \
stfd f21,pos+56(sp); \
stfd f22,pos+64(sp); \
stfd f23,pos+72(sp); \
stfd f24,pos+80(sp); \
stfd f25,pos+88(sp); \
stfd f26,pos+96(sp); \
stfd f27,pos+104(sp); \
stfd f28,pos+112(sp); \
stfd f29,pos+120(sp); \
stfd f30,pos+128(sp); \
stfd f31,pos+136(sp);
#define POP_FPU(pos) \
lfd f14,pos(sp); \
lfd f15,pos+8(sp); \
lfd f16,pos+16(sp); \
lfd f17,pos+24(sp); \
lfd f18,pos+32(sp); \
lfd f19,pos+40(sp); \
lfd f20,pos+48(sp); \
lfd f21,pos+56(sp); \
lfd f22,pos+64(sp); \
lfd f23,pos+72(sp); \
lfd f24,pos+80(sp); \
lfd f25,pos+88(sp); \
lfd f26,pos+96(sp); \
lfd f27,pos+104(sp); \
lfd f28,pos+112(sp); \
lfd f29,pos+120(sp); \
lfd f30,pos+128(sp); \
lfd f31,pos+136(sp);
# 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)
#include "../fpu_asm.h"
FUNC_START(check_fpu)
mr r4,r3
@ -138,9 +75,9 @@ FUNC_START(test_fpu)
# r4 holds pointer to the pid
# f14-f31 are non volatiles
PUSH_BASIC_STACK(256)
PUSH_FPU(256)
std r3,STACK_FRAME_PARAM(0)(sp) # Address of darray
std r4,STACK_FRAME_PARAM(1)(sp) # Address of pid
PUSH_FPU(STACK_FRAME_LOCAL(2,0))
bl load_fpu
nop
@ -155,7 +92,7 @@ FUNC_START(test_fpu)
bl check_fpu
nop
POP_FPU(STACK_FRAME_LOCAL(2,0))
POP_FPU(256)
POP_BASIC_STACK(256)
blr
FUNC_END(test_fpu)
@ -166,10 +103,10 @@ FUNC_END(test_fpu)
# registers while running is not zero.
FUNC_START(preempt_fpu)
PUSH_BASIC_STACK(256)
PUSH_FPU(256)
std r3,STACK_FRAME_PARAM(0)(sp) # double *darray
std r4,STACK_FRAME_PARAM(1)(sp) # int *threads_starting
std r5,STACK_FRAME_PARAM(2)(sp) # int *running
PUSH_FPU(STACK_FRAME_LOCAL(3,0))
bl load_fpu
nop
@ -192,7 +129,7 @@ FUNC_START(preempt_fpu)
cmpwi r5,0
bne 2b
3: POP_FPU(STACK_FRAME_LOCAL(3,0))
3: POP_FPU(256)
POP_BASIC_STACK(256)
blr
FUNC_END(preempt_fpu)