[PATCH 4/4] powerpc sstep: add testcases for vsx load/store instructions
Balamuruhan S
bala24 at linux.ibm.com
Tue Jun 30 15:53:07 AEST 2020
add testcases for vsx load/store vector paired instructions,
* Load VSX Vector Paired (lxvp)
* Load VSX Vector Paired Indexed (lxvpx)
* Prefixed Load VSX Vector Paired (plxvp)
* Store VSX Vector Paired (stxvp)
* Store VSX Vector Paired Indexed (stxvpx)
* Prefixed Store VSX Vector Paired (pstxvp)
Signed-off-by: Balamuruhan S <bala24 at linux.ibm.com>
---
arch/powerpc/include/asm/ppc-opcode.h | 7 +
arch/powerpc/lib/test_emulate_step.c | 273 ++++++++++++++++++++++++++
2 files changed, 280 insertions(+)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 558efd25683b..9bc9b184db6e 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -384,6 +384,10 @@
#define PPC_INST_VCMPEQUD 0x100000c7
#define PPC_INST_VCMPEQUB 0x10000006
+/* Prefixes */
+#define PPC_PREFIX_MLS 0x06000000
+#define PPC_PREFIX_8LS 0x04000000
+
/* macros to insert fields into opcodes */
#define ___PPC_RA(a) (((a) & 0x1f) << 16)
#define ___PPC_RB(b) (((b) & 0x1f) << 11)
@@ -415,6 +419,9 @@
#define __PPC_CT(t) (((t) & 0x0f) << 21)
#define __PPC_SPR(r) ((((r) & 0x1f) << 16) | ((((r) >> 5) & 0x1f) << 11))
#define __PPC_RC21 (0x1 << 10)
+#define __PPC_PRFX_R(r) (((r) & 0x1) << 20)
+#define __PPC_TP(tp) (((tp) & 0xf) << 22)
+#define __PPC_TX(tx) (((tx) & 0x1) << 21)
/*
* Both low and high 16 bits are added as SIGNED additions, so if low 16 bits
diff --git a/arch/powerpc/lib/test_emulate_step.c b/arch/powerpc/lib/test_emulate_step.c
index 46af80279ebc..98ecbc66bef8 100644
--- a/arch/powerpc/lib/test_emulate_step.c
+++ b/arch/powerpc/lib/test_emulate_step.c
@@ -14,7 +14,13 @@
#include <asm/inst.h>
#define IMM_L(i) ((uintptr_t)(i) & 0xffff)
+#define IMM_H(i) (((uintptr_t)(i) >> 16) & 0x3ffff)
#define IMM_DS(i) ((uintptr_t)(i) & 0xfffc)
+#define IMM_DQ(i) (((uintptr_t)(i) & 0xfff) << 4)
+
+#define PLXVP_EX_OP 0xe8000000
+#define PSTXVP_EX_OP 0xf8000000
+
/*
* Defined with TEST_ prefix so it does not conflict with other
@@ -47,6 +53,21 @@
___PPC_RA(a) | ___PPC_RB(b))
#define TEST_LXVD2X(s, a, b) ppc_inst(PPC_INST_LXVD2X | VSX_XX1((s), R##a, R##b))
#define TEST_STXVD2X(s, a, b) ppc_inst(PPC_INST_STXVD2X | VSX_XX1((s), R##a, R##b))
+#define TEST_LXVP(tp, tx, a, i) \
+ (PPC_INST_LXVP | __PPC_TP(tp) | __PPC_TX(tx) | ___PPC_RA(a) | IMM_DQ(i))
+#define TEST_STXVP(sp, sx, a, i) \
+ (PPC_INST_STXVP | __PPC_TP(sp) | __PPC_TX(sx) | ___PPC_RA(a) | IMM_DQ(i) | 0x1)
+#define TEST_LXVPX(tp, tx, a, b) \
+ (PPC_INST_LXVPX | __PPC_TP(tp) | __PPC_TX(tx) | ___PPC_RA(a) | ___PPC_RB(b))
+#define TEST_STXVPX(sp, sx, a, b) \
+ (PPC_INST_STXVPX | __PPC_TP(sp) | __PPC_TX(sx) | ___PPC_RA(a) | ___PPC_RB(b))
+#define TEST_PLXVP(a, i, pr, tp, tx) \
+ ((PPC_PREFIX_8LS | __PPC_PRFX_R(pr) | IMM_H(i)) << 32 | \
+ (PLXVP_EX_OP | __PPC_TP(tp) | __PPC_TX(tx) | ___PPC_RA(a) | IMM_L(i)))
+#define TEST_PSTXVP(a, i, pr, sp, sx) \
+ ((PPC_PREFIX_8LS | __PPC_PRFX_R(pr) | IMM_H(i)) << 32 | \
+ (PSTXVP_EX_OP | __PPC_TP(sp) | __PPC_TX(sx) | ___PPC_RA(a) | IMM_L(i)))
+
#define TEST_ADD(t, a, b) ppc_inst(PPC_INST_ADD | ___PPC_RT(t) | \
___PPC_RA(a) | ___PPC_RB(b))
#define TEST_ADD_DOT(t, a, b) ppc_inst(PPC_INST_ADD | ___PPC_RT(t) | \
@@ -444,6 +465,255 @@ static void __init test_lxvd2x_stxvd2x(void)
}
#endif /* CONFIG_VSX */
+#ifdef CONFIG_VSX
+static void __init test_lxvp_stxvp(void)
+{
+ struct pt_regs regs;
+ union {
+ vector128 a[2];
+ u32 b[8];
+ } c;
+ u32 cached_b[8];
+ int stepped = -1;
+
+ init_pt_regs(®s);
+
+ /*** lxvp ***/
+
+ cached_b[0] = c.b[0] = 18233;
+ cached_b[1] = c.b[1] = 34863571;
+ cached_b[2] = c.b[2] = 834;
+ cached_b[3] = c.b[3] = 6138911;
+ cached_b[4] = c.b[4] = 1234;
+ cached_b[5] = c.b[5] = 5678;
+ cached_b[6] = c.b[6] = 91011;
+ cached_b[7] = c.b[7] = 121314;
+
+ regs.gpr[4] = (unsigned long)&c.a;
+
+ /*
+ * lxvp XTp,DQ(RA)
+ * XTp = 32×TX + 2×Tp
+ * let TX=1 Tp=1 RA=4 DQ=0
+ */
+ stepped = emulate_step(®s, ppc_inst(TEST_LXVP(1, 1, 4, 0)));
+
+ if (stepped == 1 && cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("lxvp", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("lxvp", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("lxvp", "FAIL");
+ }
+
+ /*** stxvp ***/
+
+ c.b[0] = 21379463;
+ c.b[1] = 87;
+ c.b[2] = 374234;
+ c.b[3] = 4;
+ c.b[4] = 90;
+ c.b[5] = 122;
+ c.b[6] = 555;
+ c.b[7] = 32144;
+
+ /*
+ * stxvp XSp,DQ(RA)
+ * XSp = 32×SX + 2×Sp
+ * let SX=1 Sp=1 RA=4 DQ=0
+ */
+ stepped = emulate_step(®s, ppc_inst(TEST_STXVP(1, 1, 4, 0)));
+
+ if (stepped == 1 && cached_b[0] == c.b[0] && cached_b[1] == c.b[1] &&
+ cached_b[2] == c.b[2] && cached_b[3] == c.b[3] &&
+ cached_b[4] == c.b[4] && cached_b[5] == c.b[5] &&
+ cached_b[6] == c.b[6] && cached_b[7] == c.b[7] &&
+ cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("stxvp", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("stxvp", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("stxvp", "FAIL");
+ }
+}
+#else
+static void __init test_lxvp_stxvp(void)
+{
+ show_result("lxvp", "SKIP (CONFIG_VSX is not set)");
+ show_result("stxvp", "SKIP (CONFIG_VSX is not set)");
+}
+#endif /* CONFIG_VSX */
+
+#ifdef CONFIG_VSX
+static void __init test_lxvpx_stxvpx(void)
+{
+ struct pt_regs regs;
+ union {
+ vector128 a[2];
+ u32 b[8];
+ } c;
+ u32 cached_b[8];
+ int stepped = -1;
+
+ init_pt_regs(®s);
+
+ /*** lxvpx ***/
+
+ cached_b[0] = c.b[0] = 18233;
+ cached_b[1] = c.b[1] = 34863571;
+ cached_b[2] = c.b[2] = 834;
+ cached_b[3] = c.b[3] = 6138911;
+ cached_b[4] = c.b[4] = 1234;
+ cached_b[5] = c.b[5] = 5678;
+ cached_b[6] = c.b[6] = 91011;
+ cached_b[7] = c.b[7] = 121314;
+
+ regs.gpr[3] = (unsigned long)&c.a;
+ regs.gpr[4] = 0;
+
+ /*
+ * lxvpx XTp,RA,RB
+ * XTp = 32×TX + 2×Tp
+ * let TX=1 Tp=1 RA=3 RB=4
+ */
+ stepped = emulate_step(®s, ppc_inst(TEST_LXVPX(1, 1, 3, 4)));
+
+ if (stepped == 1 && cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("lxvpx", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("lxvpx", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("lxvpx", "FAIL");
+ }
+
+ /*** stxvpx ***/
+
+ c.b[0] = 21379463;
+ c.b[1] = 87;
+ c.b[2] = 374234;
+ c.b[3] = 4;
+ c.b[4] = 90;
+ c.b[5] = 122;
+ c.b[6] = 555;
+ c.b[7] = 32144;
+
+ /*
+ * stxvpx XSp,RA,RB
+ * XSp = 32×SX + 2×Sp
+ * let SX=1 Sp=1 RA=3 RB=4
+ */
+ stepped = emulate_step(®s, ppc_inst(TEST_STXVPX(1, 1, 3, 4)));
+
+ if (stepped == 1 && cached_b[0] == c.b[0] && cached_b[1] == c.b[1] &&
+ cached_b[2] == c.b[2] && cached_b[3] == c.b[3] &&
+ cached_b[4] == c.b[4] && cached_b[5] == c.b[5] &&
+ cached_b[6] == c.b[6] && cached_b[7] == c.b[7] &&
+ cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("stxvpx", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("stxvpx", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("stxvpx", "FAIL");
+ }
+}
+#else
+static void __init test_lxvpx_stxvpx(void)
+{
+ show_result("lxvpx", "SKIP (CONFIG_VSX is not set)");
+ show_result("stxvpx", "SKIP (CONFIG_VSX is not set)");
+}
+#endif /* CONFIG_VSX */
+
+#ifdef CONFIG_VSX
+static void __init test_plxvp_pstxvp(void)
+{
+ struct ppc_inst instr;
+ struct pt_regs regs;
+ union {
+ vector128 a[2];
+ u32 b[8];
+ } c;
+ u32 cached_b[8];
+ int stepped = -1;
+
+ /*
+ * plxvp XTp,D(RA),R
+ * XSp = 32×SX + 2×Sp
+ * let RA=3 R=0 D=d0||d1=0 R=0 Sp=1 SX=1
+ */
+ instr = ppc_inst_prefix(TEST_PLXVP(3, 0, 0, 1, 1) >> 32,
+ TEST_PLXVP(3, 0, 0, 1, 1) & 0xffffffff);
+
+ /*** plxvpx ***/
+
+ cached_b[0] = c.b[0] = 18233;
+ cached_b[1] = c.b[1] = 34863571;
+ cached_b[2] = c.b[2] = 834;
+ cached_b[3] = c.b[3] = 6138911;
+ cached_b[4] = c.b[4] = 1234;
+ cached_b[5] = c.b[5] = 5678;
+ cached_b[6] = c.b[6] = 91011;
+ cached_b[7] = c.b[7] = 121314;
+
+ init_pt_regs(®s);
+ regs.gpr[3] = (unsigned long)&c.a;
+
+ stepped = emulate_step(®s, instr);
+ if (stepped == 1 && cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("plxvpx", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("plxvpx", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("plxvpx", "FAIL");
+ }
+
+ /*** pstxvpx ***/
+
+ c.b[0] = 21379463;
+ c.b[1] = 87;
+ c.b[2] = 374234;
+ c.b[3] = 4;
+ c.b[4] = 90;
+ c.b[5] = 122;
+ c.b[6] = 555;
+ c.b[7] = 32144;
+
+ /*
+ * pstxvpx XTp,D(RA),R
+ * XSp = 32×SX + 2×Sp
+ * let RA=3 D=d0||d1=0 R=0 Sp=1 SX=1
+ */
+ instr = ppc_inst_prefix(TEST_PSTXVP(3, 0, 0, 1, 1) >> 32,
+ TEST_PSTXVP(3, 0, 0, 1, 1) & 0xffffffff);
+
+ stepped = emulate_step(®s, instr);
+
+ if (stepped == 1 && cached_b[0] == c.b[0] && cached_b[1] == c.b[1] &&
+ cached_b[2] == c.b[2] && cached_b[3] == c.b[3] &&
+ cached_b[4] == c.b[4] && cached_b[5] == c.b[5] &&
+ cached_b[6] == c.b[6] && cached_b[7] == c.b[7] &&
+ cpu_has_feature(CPU_FTR_VSX)) {
+ show_result("pstxvpx", "PASS");
+ } else {
+ if (!cpu_has_feature(CPU_FTR_VSX))
+ show_result("pstxvpx", "PASS (!CPU_FTR_VSX)");
+ else
+ show_result("pstxvpx", "FAIL");
+ }
+}
+#else
+static void __init test_plxvp_pstxvp(void)
+{
+ show_result("plxvpx", "SKIP (CONFIG_VSX is not set)");
+ show_result("pstxvpx", "SKIP (CONFIG_VSX is not set)");
+}
+#endif /* CONFIG_VSX */
+
static void __init run_tests_load_store(void)
{
test_ld();
@@ -455,6 +725,9 @@ static void __init run_tests_load_store(void)
test_lfdx_stfdx();
test_lvx_stvx();
test_lxvd2x_stxvd2x();
+ test_lxvp_stxvp();
+ test_lxvpx_stxvpx();
+ test_plxvp_pstxvp();
}
struct compute_test {
--
2.24.1
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