summaryrefslogtreecommitdiff
path: root/tools
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 20:19:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 20:19:31 -0700
commit07021b43597f506cc525d139ed1a94e79cf184f2 (patch)
tree888ab33ec69b397ae6f8a2c82d14197047ee827e /tools
parentd1f5323370fceaed43a7ee38f4c7bfc7e70f28d0 (diff)
parentb7b7013cac55d794940bd9cb7b7c55c9dececac4 (diff)
Merge tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman: "Highlights: - Major rework of Book3S 64-bit exception vectors (Nicholas Piggin) - Use gas sections for arranging exception vectors et. al. - Large set of TM cleanups and selftests (Cyril Bur) - Enable transactional memory (TM) lazily for userspace (Cyril Bur) - Support for XZ compression in the zImage wrapper (Oliver O'Halloran) - Add support for bpf constant blinding (Naveen N. Rao) - Beginnings of upstream support for PA Semi Nemo motherboards (Darren Stevens) Fixes: - Ensure .mem(init|exit).text are within _stext/_etext (Michael Ellerman) - xmon: Don't use ld on 32-bit (Michael Ellerman) - vdso64: Use double word compare on pointers (Anton Blanchard) - powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui) - powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy) - powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K (Aneesh Kumar K.V) - Fix memory leak in queue_hotplug_event() error path (Andrew Donnellan) - Replay hypervisor maintenance interrupt first (Nicholas Piggin) Various performance optimisations (Anton Blanchard): - Align hot loops of memset() and backwards_memcpy() - During context switch, check before setting mm_cpumask - Remove static branch prediction in atomic{, 64}_add_unless - Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian - Set default CPU type to POWER8 for little endian builds Cleanups & features: - Sparse fixes/cleanups (Daniel Axtens) - Preserve CFAR value on SLB miss caused by access to bogus address (Paul Mackerras) - Radix MMU fixups for POWER9 (Aneesh Kumar K.V) - Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU) (Simon Guo) - Optimise syscall entry for virtual, relocatable case (Nicholas Piggin) - Optimise MSR handling in exception handling (Nicholas Piggin) - Support for kexec with Radix MMU (Benjamin Herrenschmidt) - powernv EEH fixes (Russell Currey) - Suprise PCI hotplug support for powernv (Gavin Shan) - Endian/sparse fixes for powernv PCI (Gavin Shan) - Defconfig updates (Anton Blanchard) - KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh) - cxl: Flush PSL cache before resetting the adapter (Frederic Barrat) - cxl: replace loop with for_each_child_of_node(), remove unneeded of_node_put() (Andrew Donnellan) - Fix HV facility unavailable to use correct handler (Nicholas Piggin) - Remove unnecessary syscall trampoline (Nicholas Piggin) - fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael Ellerman) - Quieten EEH message when no adapters are found (Anton Blanchard) - powernv: Add PHB register dump debugfs handle (Russell Currey) - Use kprobe blacklist for exception handlers & asm functions (Nicholas Piggin) - Document the syscall ABI (Nicholas Piggin) - MAINTAINERS: Update cxl maintainers (Michael Neuling) - powerpc: Remove all usages of NO_IRQ (Michael Ellerman) Minor cleanups: - Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur, Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng, Simon Guo" * tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits) powerpc/bpf: Add support for bpf constant blinding powerpc/bpf: Implement support for tail calls powerpc/bpf: Introduce accessors for using the tmp local stack space powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n powerpc: tm: Enable transactional memory (TM) lazily for userspace powerpc/tm: Add TM Unavailable Exception powerpc: Remove do_load_up_transact_{fpu,altivec} powerpc: tm: Rename transct_(*) to ck(\1)_state powerpc: tm: Always use fp_state and vr_state to store live registers selftests/powerpc: Add checks for transactional VSXs in signal contexts selftests/powerpc: Add checks for transactional VMXs in signal contexts selftests/powerpc: Add checks for transactional FPUs in signal contexts selftests/powerpc: Add checks for transactional GPRs in signal contexts selftests/powerpc: Check that signals always get delivered selftests/powerpc: Add TM tcheck helpers in C selftests/powerpc: Allow tests to extend their kill timeout selftests/powerpc: Introduce GPR asm helper header file selftests/powerpc: Move VMX stack frame macros to header file selftests/powerpc: Rework FPU stack placement macros and move to header file selftests/powerpc: Check for VSX preservation across userspace preemption ...
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/powerpc/Makefile1
-rw-r--r--tools/testing/selftests/powerpc/fpu_asm.h80
-rw-r--r--tools/testing/selftests/powerpc/gpr_asm.h96
-rw-r--r--tools/testing/selftests/powerpc/harness.c9
-rw-r--r--tools/testing/selftests/powerpc/math/Makefile5
-rw-r--r--tools/testing/selftests/powerpc/math/fpu_asm.S73
-rw-r--r--tools/testing/selftests/powerpc/math/vmx_asm.S85
-rw-r--r--tools/testing/selftests/powerpc/math/vsx_asm.S61
-rw-r--r--tools/testing/selftests/powerpc/math/vsx_preempt.c147
-rw-r--r--tools/testing/selftests/powerpc/signal/Makefile13
-rw-r--r--tools/testing/selftests/powerpc/signal/signal.S50
-rw-r--r--tools/testing/selftests/powerpc/signal/signal.c111
-rw-r--r--tools/testing/selftests/powerpc/signal/signal_tm.c110
-rw-r--r--tools/testing/selftests/powerpc/tm/Makefile8
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-context-chk-fpu.c92
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-context-chk-gpr.c90
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c110
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vsx.c125
-rw-r--r--tools/testing/selftests/powerpc/tm/tm-signal.S114
-rw-r--r--tools/testing/selftests/powerpc/tm/tm.h27
-rw-r--r--tools/testing/selftests/powerpc/utils.h9
-rw-r--r--tools/testing/selftests/powerpc/vmx_asm.h96
-rw-r--r--tools/testing/selftests/powerpc/vsx_asm.h71
23 files changed, 1426 insertions, 157 deletions
diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile
index 1cc6d64c39b7..db54a33f850f 100644
--- a/tools/testing/selftests/powerpc/Makefile
+++ b/tools/testing/selftests/powerpc/Makefile
@@ -19,6 +19,7 @@ SUB_DIRS = alignment \
dscr \
mm \
pmu \
+ signal \
primitives \
stringloops \
switch_endian \
diff --git a/tools/testing/selftests/powerpc/fpu_asm.h b/tools/testing/selftests/powerpc/fpu_asm.h
new file mode 100644
index 000000000000..6a387d255e27
--- /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 */
diff --git a/tools/testing/selftests/powerpc/gpr_asm.h b/tools/testing/selftests/powerpc/gpr_asm.h
new file mode 100644
index 000000000000..f6f38852d3a0
--- /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 */
diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c
index 52f9be7f61f0..248a820048df 100644
--- a/tools/testing/selftests/powerpc/harness.c
+++ b/tools/testing/selftests/powerpc/harness.c
@@ -19,9 +19,9 @@
#include "subunit.h"
#include "utils.h"
-#define TIMEOUT 120
#define KILL_TIMEOUT 5
+static uint64_t timeout = 120;
int run_test(int (test_function)(void), char *name)
{
@@ -44,7 +44,7 @@ int run_test(int (test_function)(void), char *name)
setpgid(pid, pid);
/* Wake us up in timeout seconds */
- alarm(TIMEOUT);
+ alarm(timeout);
terminated = false;
wait:
@@ -94,6 +94,11 @@ static struct sigaction alarm_action = {
.sa_handler = alarm_handler,
};
+void test_harness_set_timeout(uint64_t time)
+{
+ timeout = time;
+}
+
int test_harness(int (test_function)(void), char *name)
{
int rc;
diff --git a/tools/testing/selftests/powerpc/math/Makefile b/tools/testing/selftests/powerpc/math/Makefile
index 5b88875d5955..a505b66d408a 100644
--- a/tools/testing/selftests/powerpc/math/Makefile
+++ b/tools/testing/selftests/powerpc/math/Makefile
@@ -1,4 +1,4 @@
-TEST_PROGS := fpu_syscall fpu_preempt fpu_signal vmx_syscall vmx_preempt vmx_signal
+TEST_PROGS := fpu_syscall fpu_preempt fpu_signal vmx_syscall vmx_preempt vmx_signal vsx_preempt
all: $(TEST_PROGS)
@@ -13,6 +13,9 @@ vmx_syscall: vmx_asm.S
vmx_preempt: vmx_asm.S
vmx_signal: vmx_asm.S
+vsx_preempt: CFLAGS += -mvsx
+vsx_preempt: vsx_asm.S
+
include ../../lib.mk
clean:
diff --git a/tools/testing/selftests/powerpc/math/fpu_asm.S b/tools/testing/selftests/powerpc/math/fpu_asm.S
index f3711d80e709..241f067a510f 100644
--- a/tools/testing/selftests/powerpc/math/fpu_asm.S
+++ b/tools/testing/selftests/powerpc/math/fpu_asm.S
@@ -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)
diff --git a/tools/testing/selftests/powerpc/math/vmx_asm.S b/tools/testing/selftests/powerpc/math/vmx_asm.S
index 1b8c248b3ac1..fd74da488625 100644
--- a/tools/testing/selftests/powerpc/math/vmx_asm.S
+++ b/tools/testing/selftests/powerpc/math/vmx_asm.S
@@ -8,90 +8,7 @@
*/
#include "../basic_asm.h"
-
-# POS MUST BE 16 ALIGNED!
-#define PUSH_VMX(pos,reg) \
- li reg,pos; \
- stvx v20,reg,sp; \
- addi reg,reg,16; \
- stvx v21,reg,sp; \
- addi reg,reg,16; \
- stvx v22,reg,sp; \
- addi reg,reg,16; \
- stvx v23,reg,sp; \
- addi reg,reg,16; \
- stvx v24,reg,sp; \
- addi reg,reg,16; \
- stvx v25,reg,sp; \
- addi reg,reg,16; \
- stvx v26,reg,sp; \
- addi reg,reg,16; \
- stvx v27,reg,sp; \
- addi reg,reg,16; \
- stvx v28,reg,sp; \
- addi reg,reg,16; \
- stvx v29,reg,sp; \
- addi reg,reg,16; \
- stvx v30,reg,sp; \
- addi reg,reg,16; \
- stvx v31,reg,sp;
-
-# POS MUST BE 16 ALIGNED!
-#define POP_VMX(pos,reg) \
- li reg,pos; \
- lvx v20,reg,sp; \
- addi reg,reg,16; \
- lvx v21,reg,sp; \
- addi reg,reg,16; \
- lvx v22,reg,sp; \
- addi reg,reg,16; \
- lvx v23,reg,sp; \
- addi reg,reg,16; \
- lvx v24,reg,sp; \
- addi reg,reg,16; \
- lvx v25,reg,sp; \
- addi reg,reg,16; \
- lvx v26,reg,sp; \
- addi reg,reg,16; \
- lvx v27,reg,sp; \
- addi reg,reg,16; \
- lvx v28,reg,sp; \
- addi reg,reg,16; \
- lvx v29,reg,sp; \
- addi reg,reg,16; \
- lvx v30,reg,sp; \
- addi reg,reg,16; \
- lvx v31,reg,sp;
-
-# Carefull this will 'clobber' vmx (by design)
-# Don't call this from C
-FUNC_START(load_vmx)
- li r5,0
- lvx v20,r5,r3
- addi r5,r5,16
- lvx v21,r5,r3
- addi r5,r5,16
- lvx v22,r5,r3
- addi r5,r5,16
- lvx v23,r5,r3
- addi r5,r5,16
- lvx v24,r5,r3
- addi r5,r5,16
- lvx v25,r5,r3
- addi r5,r5,16
- lvx v26,r5,r3
- addi r5,r5,16
- lvx v27,r5,r3
- addi r5,r5,16
- lvx v28,r5,r3
- addi r5,r5,16
- lvx v29,r5,r3
- addi r5,r5,16
- lvx v30,r5,r3
- addi r5,r5,16
- lvx v31,r5,r3
- blr
-FUNC_END(load_vmx)
+#include "../vmx_asm.h"
# Should be safe from C, only touches r4, r5 and v0,v1,v2
FUNC_START(check_vmx)
diff --git a/tools/testing/selftests/powerpc/math/vsx_asm.S b/tools/testing/selftests/powerpc/math/vsx_asm.S
new file mode 100644
index 000000000000..a110dd882d5e
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vsx_asm.S
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2015, 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.
+ */
+
+#include "../basic_asm.h"
+#include "../vsx_asm.h"
+
+#long check_vsx(vector int *r3);
+#This function wraps storeing VSX regs to the end of an array and a
+#call to a comparison function in C which boils down to a memcmp()
+FUNC_START(check_vsx)
+ PUSH_BASIC_STACK(32)
+ std r3,STACK_FRAME_PARAM(0)(sp)
+ addi r3, r3, 16 * 12 #Second half of array
+ bl store_vsx
+ ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl vsx_memcmp
+ POP_BASIC_STACK(32)
+ blr
+FUNC_END(check_vsx)
+
+# int preempt_vmx(vector int *varray, int *threads_starting,
+# int *running);
+# On starting will (atomically) decrement threads_starting as a signal
+# that the VMX have been loaded with varray. Will proceed to check the
+# validity of the VMX registers while running is not zero.
+FUNC_START(preempt_vsx)
+ PUSH_BASIC_STACK(512)
+ std r3,STACK_FRAME_PARAM(0)(sp) # vector int *varray
+ std r4,STACK_FRAME_PARAM(1)(sp) # int *threads_starting
+ std r5,STACK_FRAME_PARAM(2)(sp) # int *running
+
+ bl load_vsx
+ nop
+
+ sync
+ # Atomic DEC
+ ld r3,STACK_FRAME_PARAM(1)(sp)
+1: lwarx r4,0,r3
+ addi r4,r4,-1
+ stwcx. r4,0,r3
+ bne- 1b
+
+2: ld r3,STACK_FRAME_PARAM(0)(sp)
+ bl check_vsx
+ nop
+ cmpdi r3,0
+ bne 3f
+ ld r4,STACK_FRAME_PARAM(2)(sp)
+ ld r5,0(r4)
+ cmpwi r5,0
+ bne 2b
+
+3: POP_BASIC_STACK(512)
+ blr
+FUNC_END(preempt_vsx)
diff --git a/tools/testing/selftests/powerpc/math/vsx_preempt.c b/tools/testing/selftests/powerpc/math/vsx_preempt.c
new file mode 100644
index 000000000000..6387f03a0a6a
--- /dev/null
+++ b/tools/testing/selftests/powerpc/math/vsx_preempt.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2015, 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.
+ *
+ * This test attempts to see if the VSX registers change across preemption.
+ * There is no way to be sure preemption happened so this test just
+ * uses many threads and a long wait. As such, a successful test
+ * doesn't mean much but a failure is bad.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#include "utils.h"
+
+/* Time to wait for workers to get preempted (seconds) */
+#define PREEMPT_TIME 20
+/*
+ * Factor by which to multiply number of online CPUs for total number of
+ * worker threads
+ */
+#define THREAD_FACTOR 8
+
+/*
+ * Ensure there is twice the number of non-volatile VMX regs!
+ * check_vmx() is going to use the other half as space to put the live
+ * registers before calling vsx_memcmp()
+ */
+__thread vector int varray[24] = {
+ {1, 2, 3, 4 }, {5, 6, 7, 8 }, {9, 10,11,12},
+ {13,14,15,16}, {17,18,19,20}, {21,22,23,24},
+ {25,26,27,28}, {29,30,31,32}, {33,34,35,36},
+ {37,38,39,40}, {41,42,43,44}, {45,46,47,48}
+};
+
+int threads_starting;
+int running;
+
+extern long preempt_vsx(vector int *varray, int *threads_starting, int *running);
+
+long vsx_memcmp(vector int *a) {
+ vector int zero = {0, 0, 0, 0};
+ int i;
+
+ FAIL_IF(a != varray);
+
+ for(i = 0; i < 12; i++) {
+ if (memcmp(&a[i + 12], &zero, sizeof(vector int)) == 0) {
+ fprintf(stderr, "Detected zero from the VSX reg %d\n", i + 12);
+ return 2;
+ }
+ }
+
+ if (memcmp(a, &a[12], 12 * sizeof(vector int))) {
+ long *p = (long *)a;
+ fprintf(stderr, "VSX mismatch\n");
+ for (i = 0; i < 24; i=i+2)
+ fprintf(stderr, "%d: 0x%08lx%08lx | 0x%08lx%08lx\n",
+ i/2 + i%2 + 20, p[i], p[i + 1], p[i + 24], p[i + 25]);
+ return 1;
+ }
+ return 0;
+}
+
+void *preempt_vsx_c(void *p)
+{
+ int i, j;
+ long rc;
+ srand(pthread_self());
+ for (i = 0; i < 12; i++)
+ for (j = 0; j < 4; j++) {
+ varray[i][j] = rand();
+ /* Don't want zero because it hides kernel problems */
+ if (varray[i][j] == 0)
+ j--;
+ }
+ rc = preempt_vsx(varray, &threads_starting, &running);
+ if (rc == 2)
+ fprintf(stderr, "Caught zeros in VSX compares\n");
+ return (void *)rc;
+}
+
+int test_preempt_vsx(void)
+{
+ int i, rc, threads;
+ pthread_t *tids;
+
+ threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
+ tids = malloc(threads * sizeof(pthread_t));
+ FAIL_IF(!tids);
+
+ running = true;
+ threads_starting = threads;
+ for (i = 0; i < threads; i++) {
+ rc = pthread_create(&tids[i], NULL, preempt_vsx_c, NULL);
+ FAIL_IF(rc);
+ }
+
+ setbuf(stdout, NULL);
+ /* Not really nessesary but nice to wait for every thread to start */
+ printf("\tWaiting for %d workers to start...", threads_starting);
+ while(threads_starting)
+ asm volatile("": : :"memory");
+ printf("done\n");
+
+ printf("\tWaiting for %d seconds to let some workers get preempted...", PREEMPT_TIME);
+ sleep(PREEMPT_TIME);
+ printf("done\n");
+
+ printf("\tStopping workers...");
+ /*
+ * Working are checking this value every loop. In preempt_vsx 'cmpwi r5,0; bne 2b'.
+ * r5 will have loaded the value of running.
+ */
+ running = 0;
+ for (i = 0; i < threads; i++) {
+ void *rc_p;
+ pthread_join(tids[i], &rc_p);
+
+ /*
+ * Harness will say the fail was here, look at why preempt_vsx
+ * returned
+ */
+ if ((long) rc_p)
+ printf("oops\n");
+ FAIL_IF((long) rc_p);
+ }
+ printf("done\n");
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ return test_harness(test_preempt_vsx, "vsx_preempt");
+}
diff --git a/tools/testing/selftests/powerpc/signal/Makefile b/tools/testing/selftests/powerpc/signal/Makefile
new file mode 100644
index 000000000000..f0eef27458e2
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/Makefile
@@ -0,0 +1,13 @@
+TEST_PROGS := signal signal_tm
+
+all: $(TEST_PROGS)
+
+$(TEST_PROGS): ../harness.c ../utils.c signal.S
+
+CFLAGS += -maltivec
+signal_tm: CFLAGS += -mhtm
+
+include ../../lib.mk
+
+clean:
+ rm -f $(TEST_PROGS) *.o
diff --git a/tools/testing/selftests/powerpc/signal/signal.S b/tools/testing/selftests/powerpc/signal/signal.S
new file mode 100644
index 000000000000..7043d521df0a
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal.S
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2015, 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.
+ */
+
+#include "../basic_asm.h"
+
+/* long signal_self(pid_t pid, int sig); */
+FUNC_START(signal_self)
+ li r0,37 /* sys_kill */
+ /* r3 already has our pid in it */
+ /* r4 already has signal type in it */
+ sc
+ bc 4,3,1f
+ subfze r3,r3
+1: blr
+FUNC_END(signal_self)
+
+/* long tm_signal_self(pid_t pid, int sig, int *ret); */
+FUNC_START(tm_signal_self)
+ PUSH_BASIC_STACK(8)
+ std r5,STACK_FRAME_PARAM(0)(sp) /* ret */
+ tbegin.
+ beq 1f
+ tsuspend.
+ li r0,37 /* sys_kill */
+ /* r3 already has our pid in it */
+ /* r4 already has signal type in it */
+ sc
+ ld r5,STACK_FRAME_PARAM(0)(sp) /* ret */
+ bc 4,3,2f
+ subfze r3,r3
+2: std r3,0(r5)
+ tabort. 0
+ tresume. /* Be nice to some cleanup, jumps back to tbegin then to 1: */
+ /*
+ * Transaction should be proper doomed and we should never get
+ * here
+ */
+ li r3,1
+ POP_BASIC_STACK(8)
+ blr
+1: li r3,0
+ POP_BASIC_STACK(8)
+ blr
+FUNC_END(tm_signal_self)
diff --git a/tools/testing/selftests/powerpc/signal/signal.c b/tools/testing/selftests/powerpc/signal/signal.c
new file mode 100644
index 000000000000..e7dedd28b3c2
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal.c
@@ -0,0 +1,111 @@
+/*
+ * 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.
+ *
+ * Sending one self a signal should always get delivered.
+ */
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+
+#define MAX_ATTEMPT 500000
+#define TIMEOUT 5
+
+extern long signal_self(pid_t pid, int sig);
+
+static sig_atomic_t signaled;
+static sig_atomic_t fail;
+
+static void signal_handler(int sig)
+{
+ if (sig == SIGUSR1)
+ signaled = 1;
+ else
+ fail = 1;
+}
+
+static int test_signal()
+{
+ int i;
+ struct sigaction act;
+ pid_t ppid = getpid();
+ pid_t pid;
+
+ act.sa_handler = signal_handler;
+ act.sa_flags = 0;
+ sigemptyset(&act.sa_mask);
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction SIGUSR1");
+ exit(1);
+ }
+ if (sigaction(SIGALRM, &act, NULL) < 0) {
+ perror("sigaction SIGALRM");
+ exit(1);
+ }
+
+ /* Don't do this for MAX_ATTEMPT, its simply too long */
+ for(i = 0; i < 1000; i++) {
+ pid = fork();
+ if (pid == -1) {
+ perror("fork");
+ exit(1);
+ }
+ if (pid == 0) {
+ signal_self(ppid, SIGUSR1);
+ exit(1);
+ } else {
+ alarm(0); /* Disable any pending */
+ alarm(2);
+ while (!signaled && !fail)
+ asm volatile("": : :"memory");
+ if (!signaled) {
+ fprintf(stderr, "Didn't get signal from child\n");
+ FAIL_IF(1); /* For the line number */
+ }
+ /* Otherwise we'll loop too fast and fork() will eventually fail */
+ waitpid(pid, NULL, 0);
+ }
+ }
+
+ for (i = 0; i < MAX_ATTEMPT; i++) {
+ long rc;
+
+ alarm(0); /* Disable any pending */
+ signaled = 0;
+ alarm(TIMEOUT);
+ rc = signal_self(ppid, SIGUSR1);
+ if (rc) {
+ fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
+ i, fail, rc);
+ FAIL_IF(1); /* For the line number */
+ }
+ while (!signaled && !fail)
+ asm volatile("": : :"memory");
+ if (!signaled) {
+ fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx",
+ i, fail, rc);
+ FAIL_IF(1); /* For the line number */
+ }
+ }
+
+ return 0;
+}
+
+int main(void)
+{
+ test_harness_set_timeout(300);
+ return test_harness(test_signal, "signal");
+}
diff --git a/tools/testing/selftests/powerpc/signal/signal_tm.c b/tools/testing/selftests/powerpc/signal/signal_tm.c
new file mode 100644
index 000000000000..2e7451a37cc6
--- /dev/null
+++ b/tools/testing/selftests/powerpc/signal/signal_tm.c
@@ -0,0 +1,110 @@
+/*
+ * 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.
+ *
+ * Sending one self a signal should always get delivered.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "../tm/tm.h"
+
+#define MAX_ATTEMPT 500000
+#define TIMEOUT 10
+
+extern long tm_signal_self(pid_t pid, int sig, long *ret);
+
+static sig_atomic_t signaled;
+static sig_atomic_t fail;
+
+static void signal_handler(int sig)
+{
+ if (tcheck_active()) {
+ fail = 2;
+ return;
+ }
+
+ if (sig == SIGUSR1)
+ signaled = 1;
+ else
+ fail = 1;
+}
+
+static int test_signal_tm()
+{
+ int i;
+ struct sigaction act;
+
+ act.sa_handler = signal_handler;
+ act.sa_flags = 0;
+ sigemptyset(&act.sa_mask);
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction SIGUSR1");
+ exit(1);
+ }
+ if (sigaction(SIGALRM, &act, NULL) < 0) {
+ perror("sigaction SIGALRM");
+ exit(1);
+ }
+
+ SKIP_IF(!have_htm());
+
+ for (i = 0; i < MAX_ATTEMPT; i++) {
+ /*
+ * If anything bad happens in ASM and we fail to set ret
+ * because *handwave* TM this will cause failure
+ */
+ long ret = 0xdead;
+ long rc = 0xbeef;
+
+ alarm(0); /* Disable any pending */
+ signaled = 0;
+ alarm(TIMEOUT);
+ FAIL_IF(tcheck_transactional());
+ rc = tm_signal_self(getpid(), SIGUSR1, &ret);
+ if (ret == 0xdead)
+ /*
+ * This basically means the transaction aborted before we
+ * even got to the suspend... this is crazy but it
+ * happens.
+ * Yes this also means we might never make forward
+ * progress... the alarm() will trip eventually...
+ */
+ continue;
+
+ if (rc || ret) {
+ /* Ret is actually an errno */
+ printf("TEXASR 0x%016lx, TFIAR 0x%016lx\n",
+ __builtin_get_texasr(), __builtin_get_tfiar());
+ fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
+ i, fail, rc, ret);
+ FAIL_IF(ret);
+ }
+ while(!signaled && !fail)
+ asm volatile("": : :"memory");
+ if (!signaled) {
+ fprintf(stderr, "(%d) Fail reason: %d rc=0x%lx ret=0x%lx\n",
+ i, fail, rc, ret);
+ FAIL_IF(fail); /* For the line number */
+ }
+ }
+
+ return 0;
+}
+
+int main(void)
+{
+ return test_harness(test_signal_tm, "signal_tm");
+}
diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile
index 9d301d785d9e..c6c53c82fdd6 100644
--- a/tools/testing/selftests/powerpc/tm/Makefile
+++ b/tools/testing/selftests/powerpc/tm/Makefile
@@ -1,5 +1,8 @@
+SIGNAL_CONTEXT_CHK_TESTS := tm-signal-context-chk-gpr tm-signal-context-chk-fpu \
+ tm-signal-context-chk-vmx tm-signal-context-chk-vsx
+
TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack \
- tm-vmxcopy tm-fork tm-tar tm-tmspr tm-exec tm-execed
+ tm-vmxcopy tm-fork tm-tar tm-tmspr $(SIGNAL_CONTEXT_CHK_TESTS)
all: $(TEST_PROGS)
@@ -11,6 +14,9 @@ tm-syscall: tm-syscall-asm.S
tm-syscall: CFLAGS += -I../../../../../usr/include
tm-tmspr: CFLAGS += -pthread
+$(SIGNAL_CONTEXT_CHK_TESTS): tm-signal.S
+$(SIGNAL_CONTEXT_CHK_TESTS): CFLAGS += -mhtm -m64 -mvsx
+
include ../../lib.mk
clean:
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-fpu.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-fpu.c
new file mode 100644
index 000000000000..c760debbd5ad
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-fpu.c
@@ -0,0 +1,92 @@
+/*
+ * 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.
+ *
+ *
+ * Test the kernel's signal frame code.
+ *
+ * The kernel sets up two sets of ucontexts if the signal was to be
+ * delivered while the thread was in a transaction.
+ * Expected behaviour is that the checkpointed state is in the user
+ * context passed to the signal handler. The speculated state can be
+ * accessed with the uc_link pointer.
+ *
+ * The rationale for this is that if TM unaware code (which linked
+ * against TM libs) installs a signal handler it will not know of the
+ * speculative nature of the 'live' registers and may infer the wrong
+ * thing.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "tm.h"
+
+#define MAX_ATTEMPT 500000
+
+#define NV_FPU_REGS 18
+
+long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss);
+
+/* Be sure there are 2x as many as there are NV FPU regs (2x18) */
+static double fps[] = {
+ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
+ -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14,-15,-16,-17,-18
+};
+
+static sig_atomic_t fail;
+
+static void signal_usr1(int signum, siginfo_t *info, void *uc)
+{
+ int i;
+ ucontext_t *ucp = uc;
+ ucontext_t *tm_ucp = ucp->uc_link;
+
+ for (i = 0; i < NV_FPU_REGS && !fail; i++) {
+ fail = (ucp->uc_mcontext.fp_regs[i + 14] != fps[i]);
+ fail |= (tm_ucp->uc_mcontext.fp_regs[i + 14] != fps[i + NV_FPU_REGS]);
+ if (fail)
+ printf("Failed on %d FP %g or %g\n", i, ucp->uc_mcontext.fp_regs[i + 14], tm_ucp->uc_mcontext.fp_regs[i + 14]);
+ }
+}
+
+static int tm_signal_context_chk_fpu()
+{
+ struct sigaction act;
+ int i;
+ long rc;
+ pid_t pid = getpid();
+
+ SKIP_IF(!have_htm());
+
+ act.sa_sigaction = signal_usr1;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction sigusr1");
+ exit(1);
+ }
+
+ i = 0;
+ while (i < MAX_ATTEMPT && !fail) {
+ rc = tm_signal_self_context_load(pid, NULL, fps, NULL, NULL);
+ FAIL_IF(rc != pid);
+ i++;
+ }
+
+ return fail;
+}
+
+int main(void)
+{
+ return test_harness(tm_signal_context_chk_fpu, "tm_signal_context_chk_fpu");
+}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-gpr.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-gpr.c
new file mode 100644
index 000000000000..df91330a08ef
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-gpr.c
@@ -0,0 +1,90 @@
+/*
+ * 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.
+ *
+ *
+ * Test the kernel's signal frame code.
+ *
+ * The kernel sets up two sets of ucontexts if the signal was to be
+ * delivered while the thread was in a transaction.
+ * Expected behaviour is that the checkpointed state is in the user
+ * context passed to the signal handler. The speculated state can be
+ * accessed with the uc_link pointer.
+ *
+ * The rationale for this is that if TM unaware code (which linked
+ * against TM libs) installs a signal handler it will not know of the
+ * speculative nature of the 'live' registers and may infer the wrong
+ * thing.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "tm.h"
+
+#define MAX_ATTEMPT 500000
+
+#define NV_GPR_REGS 18
+
+long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss);
+
+static sig_atomic_t fail;
+
+static long gps[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
+ -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14,-15,-16,-17,-18};
+
+static void signal_usr1(int signum, siginfo_t *info, void *uc)
+{
+ int i;
+ ucontext_t *ucp = uc;
+ ucontext_t *tm_ucp = ucp->uc_link;
+
+ for (i = 0; i < NV_GPR_REGS && !fail; i++) {
+ fail = (ucp->uc_mcontext.gp_regs[i + 14] != gps[i]);
+ fail |= (tm_ucp->uc_mcontext.gp_regs[i + 14] != gps[i + NV_GPR_REGS]);
+ if (fail)
+ printf("Failed on %d GPR %lu or %lu\n", i,
+ ucp->uc_mcontext.gp_regs[i + 14], tm_ucp->uc_mcontext.gp_regs[i + 14]);
+ }
+}
+
+static int tm_signal_context_chk_gpr()
+{
+ struct sigaction act;
+ int i;
+ long rc;
+ pid_t pid = getpid();
+
+ SKIP_IF(!have_htm());
+
+ act.sa_sigaction = signal_usr1;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction sigusr1");
+ exit(1);
+ }
+
+ i = 0;
+ while (i < MAX_ATTEMPT && !fail) {
+ rc = tm_signal_self_context_load(pid, gps, NULL, NULL, NULL);
+ FAIL_IF(rc != pid);
+ i++;
+ }
+
+ return fail;
+}
+
+int main(void)
+{
+ return test_harness(tm_signal_context_chk_gpr, "tm_signal_context_chk_gpr");
+}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c
new file mode 100644
index 000000000000..f0ee55fd5185
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c
@@ -0,0 +1,110 @@
+/*
+ * 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.
+ *
+ *
+ * Test the kernel's signal frame code.
+ *
+ * The kernel sets up two sets of ucontexts if the signal was to be
+ * delivered while the thread was in a transaction.
+ * Expected behaviour is that the checkpointed state is in the user
+ * context passed to the signal handler. The speculated state can be
+ * accessed with the uc_link pointer.
+ *
+ * The rationale for this is that if TM unaware code (which linked
+ * against TM libs) installs a signal handler it will not know of the
+ * speculative nature of the 'live' registers and may infer the wrong
+ * thing.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "tm.h"
+
+#define MAX_ATTEMPT 500000
+
+#define NV_VMX_REGS 12
+
+long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss);
+
+static sig_atomic_t fail;
+
+vector int vms[] = {
+ {1, 2, 3, 4 },{5, 6, 7, 8 },{9, 10,11,12},
+ {13,14,15,16},{17,18,19,20},{21,22,23,24},
+ {25,26,27,28},{29,30,31,32},{33,34,35,36},
+ {37,38,39,40},{41,42,43,44},{45,46,47,48},
+ {-1, -2, -3, -4}, {-5, -6, -7, -8}, {-9, -10,-11,-12},
+ {-13,-14,-15,-16},{-17,-18,-19,-20},{-21,-22,-23,-24},
+ {-25,-26,-27,-28},{-29,-30,-31,-32},{-33,-34,-35,-36},
+ {-37,-38,-39,-40},{-41,-42,-43,-44},{-45,-46,-47,-48}
+};
+
+static void signal_usr1(int signum, siginfo_t *info, void *uc)
+{
+ int i;
+ ucontext_t *ucp = uc;
+ ucontext_t *tm_ucp = ucp->uc_link;
+
+ for (i = 0; i < NV_VMX_REGS && !fail; i++) {
+ fail = memcmp(ucp->uc_mcontext.v_regs->vrregs[i + 20],
+ &vms[i], sizeof(vector int));
+ fail |= memcmp(tm_ucp->uc_mcontext.v_regs->vrregs[i + 20],
+ &vms[i + NV_VMX_REGS], sizeof (vector int));
+
+ if (fail) {
+ int j;
+
+ fprintf(stderr, "Failed on %d vmx 0x", i);
+ for (j = 0; j < 4; j++)
+ fprintf(stderr, "%04x", ucp->uc_mcontext.v_regs->vrregs[i + 20][j]);
+ fprintf(stderr, " vs 0x");
+ for (j = 0 ; j < 4; j++)
+ fprintf(stderr, "%04x", tm_ucp->uc_mcontext.v_regs->vrregs[i + 20][j]);
+ fprintf(stderr, "\n");
+ }
+ }
+}
+
+static int tm_signal_context_chk()
+{
+ struct sigaction act;
+ int i;
+ long rc;
+ pid_t pid = getpid();
+
+ SKIP_IF(!have_htm());
+
+ act.sa_sigaction = signal_usr1;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction sigusr1");
+ exit(1);
+ }
+
+ i = 0;
+ while (i < MAX_ATTEMPT && !fail) {
+ rc = tm_signal_self_context_load(pid, NULL, NULL, vms, NULL);
+ FAIL_IF(rc != pid);
+ i++;
+ }
+
+ return fail;
+}
+
+int main(void)
+{
+ return test_harness(tm_signal_context_chk, "tm_signal_context_chk_vmx");
+}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vsx.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vsx.c
new file mode 100644
index 000000000000..b99c3d835957
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vsx.c
@@ -0,0 +1,125 @@
+/*
+ * 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.
+ *
+ *
+ * Test the kernel's signal frame code.
+ *
+ * The kernel sets up two sets of ucontexts if the signal was to be
+ * delivered while the thread was in a transaction.
+ * Expected behaviour is that the checkpointed state is in the user
+ * context passed to the signal handler. The speculated state can be
+ * accessed with the uc_link pointer.
+ *
+ * The rationale for this is that if TM unaware code (which linked
+ * against TM libs) installs a signal handler it will not know of the
+ * speculative nature of the 'live' registers and may infer the wrong
+ * thing.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <altivec.h>
+
+#include "utils.h"
+#include "tm.h"
+
+#define MAX_ATTEMPT 500000
+
+#define NV_VSX_REGS 12
+
+long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss);
+
+static sig_atomic_t fail;
+
+vector int vss[] = {
+ {1, 2, 3, 4 },{5, 6, 7, 8 },{9, 10,11,12},
+ {13,14,15,16},{17,18,19,20},{21,22,23,24},
+ {25,26,27,28},{29,30,31,32},{33,34,35,36},
+ {37,38,39,40},{41,42,43,44},{45,46,47,48},
+ {-1, -2, -3, -4 },{-5, -6, -7, -8 },{-9, -10,-11,-12},
+ {-13,-14,-15,-16},{-17,-18,-19,-20},{-21,-22,-23,-24},
+ {-25,-26,-27,-28},{-29,-30,-31,-32},{-33,-34,-35,-36},
+ {-37,-38,-39,-40},{-41,-42,-43,-44},{-45,-46,-47,-48}
+};
+
+static void signal_usr1(int signum, siginfo_t *info, void *uc)
+{
+ int i;
+ uint8_t vsc[sizeof(vector int)];
+ uint8_t vst[sizeof(vector int)];
+ ucontext_t *ucp = uc;
+ ucontext_t *tm_ucp = ucp->uc_link;
+
+ /*
+ * The other half of the VSX regs will be after v_regs.
+ *
+ * In short, vmx_reserve array holds everything. v_regs is a 16
+ * byte aligned pointer at the start of vmx_reserve (vmx_reserve
+ * may or may not be 16 aligned) where the v_regs structure exists.
+ * (half of) The VSX regsters are directly after v_regs so the
+ * easiest way to find them below.
+ */
+ long *vsx_ptr = (long *)(ucp->uc_mcontext.v_regs + 1);
+ long *tm_vsx_ptr = (long *)(tm_ucp->uc_mcontext.v_regs + 1);
+ for (i = 0; i < NV_VSX_REGS && !fail; i++) {
+ memcpy(vsc, &ucp->uc_mcontext.fp_regs[i + 20], 8);
+ memcpy(vsc + 8, &vsx_ptr[20 + i], 8);
+ fail = memcmp(vsc, &vss[i], sizeof(vector int));
+ memcpy(vst, &tm_ucp->uc_mcontext.fp_regs[i + 20], 8);
+ memcpy(vst + 8, &tm_vsx_ptr[20 + i], 8);
+ fail |= memcmp(vst, &vss[i + NV_VSX_REGS], sizeof(vector int));
+
+ if (fail) {
+ int j;
+
+ fprintf(stderr, "Failed on %d vsx 0x", i);
+ for (j = 0; j < 16; j++)
+ fprintf(stderr, "%02x", vsc[j]);
+ fprintf(stderr, " vs 0x");
+ for (j = 0; j < 16; j++)
+ fprintf(stderr, "%02x", vst[j]);
+ fprintf(stderr, "\n");
+ }
+ }
+}
+
+static int tm_signal_context_chk()
+{
+ struct sigaction act;
+ int i;
+ long rc;
+ pid_t pid = getpid();
+
+ SKIP_IF(!have_htm());
+
+ act.sa_sigaction = signal_usr1;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ if (sigaction(SIGUSR1, &act, NULL) < 0) {
+ perror("sigaction sigusr1");
+ exit(1);
+ }
+
+ i = 0;
+ while (i < MAX_ATTEMPT && !fail) {
+ rc = tm_signal_self_context_load(pid, NULL, NULL, NULL, vss);
+ FAIL_IF(rc != pid);
+ i++;
+ }
+
+ return fail;
+}
+
+int main(void)
+{
+ return test_harness(tm_signal_context_chk, "tm_signal_context_chk_vsx");
+}
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal.S b/tools/testing/selftests/powerpc/tm/tm-signal.S
new file mode 100644
index 000000000000..4e13e8b3a96f
--- /dev/null
+++ b/tools/testing/selftests/powerpc/tm/tm-signal.S
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2015, 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.
+ */
+
+#include "../basic_asm.h"
+#include "../gpr_asm.h"
+#include "../fpu_asm.h"
+#include "../vmx_asm.h"
+#include "../vsx_asm.h"
+
+/*
+ * Large caveat here being that the caller cannot expect the
+ * signal to always be sent! The hardware can (AND WILL!) abort
+ * the transaction between the tbegin and the tsuspend (however
+ * unlikely it seems or infrequently it actually happens).
+ * You have been warned.
+ */
+/* long tm_signal_self(pid_t pid, long *gprs, double *fps, vector *vms, vector *vss); */
+FUNC_START(tm_signal_self_context_load)
+ PUSH_BASIC_STACK(512)
+ /*
+ * Don't strictly need to save and restore as it depends on if
+ * we're going to use them, however this reduces messy logic
+ */
+ PUSH_VMX(STACK_FRAME_LOCAL(5,0),r8)
+ PUSH_FPU(512)
+ PUSH_NVREGS_BELOW_FPU(512)
+ std r3, STACK_FRAME_PARAM(0)(sp) /* pid */
+ std r4, STACK_FRAME_PARAM(1)(sp) /* gps */
+ std r5, STACK_FRAME_PARAM(2)(sp) /* fps */
+ std r6, STACK_FRAME_PARAM(3)(sp) /* vms */
+ std r7, STACK_FRAME_PARAM(4)(sp) /* vss */
+
+ ld r3, STACK_FRAME_PARAM(1)(sp)
+ cmpdi r3, 0
+ beq skip_gpr_lc
+ bl load_gpr
+skip_gpr_lc:
+ ld r3, STACK_FRAME_PARAM(2)(sp)
+ cmpdi r3, 0
+ beq skip_fpu_lc
+ bl load_fpu
+skip_fpu_lc:
+ ld r3, STACK_FRAME_PARAM(3)(sp)
+ cmpdi r3, 0
+ beq skip_vmx_lc
+ bl load_vmx
+skip_vmx_lc:
+ ld r3, STACK_FRAME_PARAM(4)(sp)
+ cmpdi r3, 0
+ beq skip_vsx_lc
+ bl load_vsx
+skip_vsx_lc:
+ /*
+ * Set r3 (return value) before tbegin. Use the pid as a known
+ * 'all good' return value, zero is used to indicate a non-doomed
+ * transaction.
+ */
+ ld r3, STACK_FRAME_PARAM(0)(sp)
+ tbegin.
+ beq 1f
+ tsuspend. /* Can't enter a syscall transactionally */
+ ld r3, STACK_FRAME_PARAM(1)(sp)
+ cmpdi r3, 0
+ beq skip_gpr_lt
+ /* Get the second half of the array */
+ addi r3, r3, 8 * 18
+ bl load_gpr
+skip_gpr_lt:
+ ld r3, STACK_FRAME_PARAM(2)(sp)
+ cmpdi r3, 0
+ beq skip_fpu_lt
+ /* Get the second half of the array */
+ addi r3, r3, 8 * 18
+ bl load_fpu
+skip_fpu_lt:
+ ld r3, STACK_FRAME_PARAM(3)(sp)
+ cmpdi r3, 0
+ beq skip_vmx_lt
+ /* Get the second half of the array */
+ addi r3, r3, 16 * 12
+ bl load_vmx
+skip_vmx_lt:
+ ld r3, STACK_FRAME_PARAM(4)(sp)
+ cmpdi r3, 0
+ beq skip_vsx_lt
+ /* Get the second half of the array */
+ addi r3, r3, 16 * 12
+ bl load_vsx
+skip_vsx_lt:
+ li r0, 37 /* sys_kill */
+ ld r3, STACK_FRAME_PARAM(0)(sp) /* pid */
+ li r4, 10 /* SIGUSR1 */
+ sc /* Taking the signal will doom the transaction */
+ tabort. 0
+ tresume. /* Be super sure we abort */
+ /*
+ * This will cause us to resume doomed transaction and cause
+ * hardware to cleanup, we'll end up at 1: anything between
+ * tresume. and 1: shouldn't ever run.
+ */
+ li r3, 0
+ 1:
+ POP_VMX(STACK_FRAME_LOCAL(5,0),r4)
+ POP_FPU(512)
+ POP_NVREGS_BELOW_FPU(512)
+ POP_BASIC_STACK(512)
+ blr
+FUNC_END(tm_signal_self_context_load)
diff --git a/tools/testing/selftests/powerpc/tm/tm.h b/tools/testing/selftests/powerpc/tm/tm.h
index 60318bad7d7a..2c8da74304e7 100644
--- a/tools/testing/selftests/powerpc/tm/tm.h
+++ b/tools/testing/selftests/powerpc/tm/tm.h
@@ -52,4 +52,31 @@ static inline bool failure_is_nesting(void)
return (__builtin_get_texasru() & 0x400000);
}
+static inline int tcheck(void)
+{
+ long cr;
+ asm volatile ("tcheck 0" : "=r"(cr) : : "cr0");
+ return (cr >> 28) & 4;
+}
+
+static inline bool tcheck_doomed(void)
+{
+ return tcheck() & 8;
+}
+
+static inline bool tcheck_active(void)
+{
+ return tcheck() & 4;
+}
+
+static inline bool tcheck_suspended(void)
+{
+ return tcheck() & 2;
+}
+
+static inline bool tcheck_transactional(void)
+{
+ return tcheck() & 6;
+}
+
#endif /* _SELFTESTS_POWERPC_TM_TM_H */
diff --git a/tools/testing/selftests/powerpc/utils.h b/tools/testing/selftests/powerpc/utils.h
index fbd33e52ef8f..53405e8a52ab 100644
--- a/tools/testing/selftests/powerpc/utils.h
+++ b/tools/testing/selftests/powerpc/utils.h
@@ -22,7 +22,7 @@ typedef uint32_t u32;
typedef uint16_t u16;
typedef uint8_t u8;
-
+void test_harness_set_timeout(uint64_t time);
int test_harness(int (test_function)(void), char *name);
extern void *get_auxv_entry(int type);
int pick_online_cpu(void);
@@ -32,10 +32,17 @@ static inline bool have_hwcap(unsigned long ftr)
return ((unsigned long)get_auxv_entry(AT_HWCAP) & ftr) == ftr;
}
+#ifdef AT_HWCAP2
static inline bool have_hwcap2(unsigned long ftr2)
{
return ((unsigned long)get_auxv_entry(AT_HWCAP2) & ftr2) == ftr2;
}
+#else
+static inline bool have_hwcap2(unsigned long ftr2)
+{
+ return false;
+}
+#endif
/* Yes, this is evil */
#define FAIL_IF(x) \
diff --git a/tools/testing/selftests/powerpc/vmx_asm.h b/tools/testing/selftests/powerpc/vmx_asm.h
new file mode 100644
index 000000000000..2eaaeca9cf1d
--- /dev/null
+++ b/tools/testing/selftests/powerpc/vmx_asm.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2015, 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.
+ */
+
+#include "basic_asm.h"
+
+/* POS MUST BE 16 ALIGNED! */
+#define PUSH_VMX(pos,reg) \
+ li reg,pos; \
+ stvx v20,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v21,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v22,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v23,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v24,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v25,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v26,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v27,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v28,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v29,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v30,reg,%r1; \
+ addi reg,reg,16; \
+ stvx v31,reg,%r1;
+
+/* POS MUST BE 16 ALIGNED! */
+#define POP_VMX(pos,reg) \
+ li reg,pos; \
+ lvx v20,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v21,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v22,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v23,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v24,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v25,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v26,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v27,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v28,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v29,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v30,reg,%r1; \
+ addi reg,reg,16; \
+ lvx v31,reg,%r1;
+
+/*
+ * Careful this will 'clobber' vmx (by design)
+ * Don't call this from C
+ */
+FUNC_START(load_vmx)
+ li r5,0
+ lvx v20,r5,r3
+ addi r5,r5,16
+ lvx v21,r5,r3
+ addi r5,r5,16
+ lvx v22,r5,r3
+ addi r5,r5,16
+ lvx v23,r5,r3
+ addi r5,r5,16
+ lvx v24,r5,r3
+ addi r5,r5,16
+ lvx v25,r5,r3
+ addi r5,r5,16
+ lvx v26,r5,r3
+ addi r5,r5,16
+ lvx v27,r5,r3
+ addi r5,r5,16
+ lvx v28,r5,r3
+ addi r5,r5,16
+ lvx v29,r5,r3
+ addi r5,r5,16
+ lvx v30,r5,r3
+ addi r5,r5,16
+ lvx v31,r5,r3
+ blr
+FUNC_END(load_vmx)
diff --git a/tools/testing/selftests/powerpc/vsx_asm.h b/tools/testing/selftests/powerpc/vsx_asm.h
new file mode 100644
index 000000000000..d828bfb6ef2d
--- /dev/null
+++ b/tools/testing/selftests/powerpc/vsx_asm.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2015, 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.
+ */
+
+#include "basic_asm.h"
+
+/*
+ * Careful this will 'clobber' vsx (by design), VSX are always
+ * volatile though so unlike vmx this isn't so much of an issue
+ * Still should avoid calling from C
+ */
+FUNC_START(load_vsx)
+ li r5,0
+ lxvx vs20,r5,r3
+ addi r5,r5,16
+ lxvx vs21,r5,r3
+ addi r5,r5,16
+ lxvx vs22,r5,r3
+ addi r5,r5,16
+ lxvx vs23,r5,r3
+ addi r5,r5,16
+ lxvx vs24,r5,r3
+ addi r5,r5,16
+ lxvx vs25,r5,r3
+ addi r5,r5,16
+ lxvx vs26,r5,r3
+ addi r5,r5,16
+ lxvx vs27,r5,r3
+ addi r5,r5,16
+ lxvx vs28,r5,r3
+ addi r5,r5,16
+ lxvx vs29,r5,r3
+ addi r5,r5,16
+ lxvx vs30,r5,r3
+ addi r5,r5,16
+ lxvx vs31,r5,r3
+ blr
+FUNC_END(load_vsx)
+
+FUNC_START(store_vsx)
+ li r5,0
+ stxvx vs20,r5,r3
+ addi r5,r5,16
+ stxvx vs21,r5,r3
+ addi r5,r5,16
+ stxvx vs22,r5,r3
+ addi r5,r5,16
+ stxvx vs23,r5,r3
+ addi r5,r5,16
+ stxvx vs24,r5,r3
+ addi r5,r5,16
+ stxvx vs25,r5,r3
+ addi r5,r5,16
+ stxvx vs26,r5,r3
+ addi r5,r5,16
+ stxvx vs27,r5,r3
+ addi r5,r5,16
+ stxvx vs28,r5,r3
+ addi r5,r5,16
+ stxvx vs29,r5,r3
+ addi r5,r5,16
+ stxvx vs30,r5,r3
+ addi r5,r5,16
+ stxvx vs31,r5,r3
+ blr
+FUNC_END(store_vsx)