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[PATCH v3] target/ppc: add vmsumudm vmsumcud instructions
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From: |
Lijun Pan |
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Subject: |
[PATCH v3] target/ppc: add vmsumudm vmsumcud instructions |
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Date: |
Mon, 22 Jun 2020 23:25:01 -0500 |
vmsumudm (Power ISA 3.0) - Vector Multiply-Sum Unsigned Doubleword Modulo
VA-form.
vmsumcud (Power ISA 3.1) - Vector Multiply-Sum & write Carry-out Unsigned
Doubleword VA-form.
Signed-off-by: Lijun Pan <ljp@linux.ibm.com>
---
v3: implement vmsumudm/vmsumcud through int128 functions,
suggested by Richard Henderson.
disas/ppc.c | 2 ++
target/ppc/helper.h | 4 ++-
target/ppc/int_helper.c | 49 ++++++++++++++++++++++++++++-
target/ppc/translate.c | 1 -
target/ppc/translate/vmx-impl.inc.c | 39 ++++++++++++-----------
target/ppc/translate/vmx-ops.inc.c | 2 ++
6 files changed, 76 insertions(+), 21 deletions(-)
diff --git a/disas/ppc.c b/disas/ppc.c
index 63e97cfe1d..bd76fae4c4 100644
--- a/disas/ppc.c
+++ b/disas/ppc.c
@@ -2261,7 +2261,9 @@ const struct powerpc_opcode powerpc_opcodes[] = {
{ "vmsumshs", VXA(4, 41), VXA_MASK, PPCVEC, { VD, VA, VB, VC } },
{ "vmsumubm", VXA(4, 36), VXA_MASK, PPCVEC, { VD, VA, VB,
VC } },
{ "vmsumuhm", VXA(4, 38), VXA_MASK, PPCVEC, { VD, VA, VB,
VC } },
+{ "vmsumudm", VXA(4, 35), VXA_MASK, PPCVEC, { VD, VA, VB, VC } },
{ "vmsumuhs", VXA(4, 39), VXA_MASK, PPCVEC, { VD, VA, VB,
VC } },
+{ "vmsumcud", VXA(4, 23), VXA_MASK, PPCVEC, { VD, VA, VB, VC } },
{ "vmulesb", VX(4, 776), VX_MASK, PPCVEC, { VD, VA, VB } },
{ "vmulesh", VX(4, 840), VX_MASK, PPCVEC, { VD, VA, VB } },
{ "vmuleub", VX(4, 520), VX_MASK, PPCVEC, { VD, VA, VB } },
diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 2dfa1c6942..d540e8f30b 100644
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -263,10 +263,12 @@ DEF_HELPER_3(vpkpx, void, avr, avr, avr)
DEF_HELPER_5(vmhaddshs, void, env, avr, avr, avr, avr)
DEF_HELPER_5(vmhraddshs, void, env, avr, avr, avr, avr)
DEF_HELPER_5(vmsumuhm, void, env, avr, avr, avr, avr)
+DEF_HELPER_5(vmsumudm, void, env, avr, avr, avr, avr)
DEF_HELPER_5(vmsumuhs, void, env, avr, avr, avr, avr)
DEF_HELPER_5(vmsumshm, void, env, avr, avr, avr, avr)
DEF_HELPER_5(vmsumshs, void, env, avr, avr, avr, avr)
-DEF_HELPER_4(vmladduhm, void, avr, avr, avr, avr)
+DEF_HELPER_5(vmsumcud, void, env, avr, avr, avr, avr)
+DEF_HELPER_5(vmladduhm, void, env, avr, avr, avr, avr)
DEF_HELPER_FLAGS_2(mtvscr, TCG_CALL_NO_RWG, void, env, i32)
DEF_HELPER_FLAGS_1(mfvscr, TCG_CALL_NO_RWG, i32, env)
DEF_HELPER_3(lvebx, void, env, avr, tl)
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index be53cd6f68..37ea343cb3 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -926,7 +926,8 @@ void helper_vmhraddshs(CPUPPCState *env, ppc_avr_t *r,
ppc_avr_t *a,
}
}
-void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+void helper_vmladduhm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
+ ppc_avr_t *b, ppc_avr_t *c)
{
int i;
@@ -1064,6 +1065,52 @@ void helper_vmsumuhs(CPUPPCState *env, ppc_avr_t *r,
ppc_avr_t *a,
}
}
+void helper_vmsumudm(CPUPPCState *env, ppc_avr_t *r,
+ ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+ Int128 sum;
+ uint64_t lo, hi;
+
+ sum = int128_make128(c->VsrD(1), c->VsrD(0));
+
+ mulu64(&lo, &hi, a->VsrD(0), b->VsrD(0));
+ sum = int128_add(sum, int128_make128(lo, hi));
+
+ mulu64(&lo, &hi, a->VsrD(1), b->VsrD(1));
+ sum = int128_add(sum, int128_make128(lo, hi));
+
+ r->VsrD(0) = int128_gethi(sum);
+ r->VsrD(1) = int128_getlo(sum);
+}
+
+void helper_vmsumcud(CPUPPCState *env, ppc_avr_t *r,
+ ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
+{
+ Int128 sum;
+ uint64_t p1lo, p1hi, p2lo, p2hi;
+
+ mulu64(&p1lo, &p1hi, a->VsrD(0), b->VsrD(0));
+ mulu64(&p2lo, &p2hi, a->VsrD(1), b->VsrD(1));
+
+ /* Sum lowest 64-bit elements. */
+ sum = int128_make128(c->VsrD(1), 0);
+ sum = int128_add(sum, int128_make128(p1lo, 0));
+ sum = int128_add(sum, int128_make128(p2lo, 0));
+
+ /*
+ * Discard low 64-bits, leaving the carry into bit 64.
+ * Then sum the higher 64-bit elements.
+ */
+ sum = int128_rshift(sum, 64);
+ sum = int128_add(sum, int128_make128(c->VsrD(0), 0));
+ sum = int128_add(sum, int128_make128(p1hi, 0));
+ sum = int128_add(sum, int128_make128(p2hi, 0));
+
+ /* The result is only the carry into bits 64 & 65. */
+ r->VsrD(1) = int128_gethi(sum);
+ r->VsrD(0) = 0;
+}
+
#define VMUL_DO_EVN(name, mul_element, mul_access, prod_access, cast) \
void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 4ce3d664b5..35ff1aa77e 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -7281,7 +7281,6 @@ GEN_HANDLER(lvsl, 0x1f, 0x06, 0x00, 0x00000001,
PPC_ALTIVEC),
GEN_HANDLER(lvsr, 0x1f, 0x06, 0x01, 0x00000001, PPC_ALTIVEC),
GEN_HANDLER(mfvscr, 0x04, 0x2, 0x18, 0x001ff800, PPC_ALTIVEC),
GEN_HANDLER(mtvscr, 0x04, 0x2, 0x19, 0x03ff0000, PPC_ALTIVEC),
-GEN_HANDLER(vmladduhm, 0x04, 0x11, 0xFF, 0x00000000, PPC_ALTIVEC),
#if defined(TARGET_PPC64)
GEN_HANDLER_E(maddhd_maddhdu, 0x04, 0x18, 0xFF, 0x00000000, PPC_NONE,
PPC2_ISA300),
diff --git a/target/ppc/translate/vmx-impl.inc.c
b/target/ppc/translate/vmx-impl.inc.c
index 403ed3a01c..520b49a773 100644
--- a/target/ppc/translate/vmx-impl.inc.c
+++ b/target/ppc/translate/vmx-impl.inc.c
@@ -1248,6 +1248,25 @@ static void gen_vsldoi(DisasContext *ctx)
tcg_temp_free_i32(sh);
}
+#define GEN_VAFORM(name, opc2) \
+static void glue(gen_, name)(DisasContext *ctx) \
+{ \
+ TCGv_ptr ra, rb, rc, rd; \
+ if (unlikely(!ctx->altivec_enabled)) { \
+ gen_exception(ctx, POWERPC_EXCP_VPU); \
+ return; \
+ } \
+ ra = gen_avr_ptr(rA(ctx->opcode)); \
+ rb = gen_avr_ptr(rB(ctx->opcode)); \
+ rc = gen_avr_ptr(rC(ctx->opcode)); \
+ rd = gen_avr_ptr(rD(ctx->opcode)); \
+ gen_helper_##name(cpu_env, rd, ra, rb, rc); \
+ tcg_temp_free_ptr(ra); \
+ tcg_temp_free_ptr(rb); \
+ tcg_temp_free_ptr(rc); \
+ tcg_temp_free_ptr(rd); \
+}
+
#define GEN_VAFORM_PAIRED(name0, name1, opc2) \
static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
{ \
@@ -1272,24 +1291,8 @@ static void glue(gen_, name0##_##name1)(DisasContext
*ctx) \
}
GEN_VAFORM_PAIRED(vmhaddshs, vmhraddshs, 16)
-
-static void gen_vmladduhm(DisasContext *ctx)
-{
- TCGv_ptr ra, rb, rc, rd;
- if (unlikely(!ctx->altivec_enabled)) {
- gen_exception(ctx, POWERPC_EXCP_VPU);
- return;
- }
- ra = gen_avr_ptr(rA(ctx->opcode));
- rb = gen_avr_ptr(rB(ctx->opcode));
- rc = gen_avr_ptr(rC(ctx->opcode));
- rd = gen_avr_ptr(rD(ctx->opcode));
- gen_helper_vmladduhm(rd, ra, rb, rc);
- tcg_temp_free_ptr(ra);
- tcg_temp_free_ptr(rb);
- tcg_temp_free_ptr(rc);
- tcg_temp_free_ptr(rd);
-}
+GEN_VAFORM(vmsumcud, 11)
+GEN_VAFORM_PAIRED(vmladduhm, vmsumudm, 17)
static void gen_vpermr(DisasContext *ctx)
{
diff --git a/target/ppc/translate/vmx-ops.inc.c
b/target/ppc/translate/vmx-ops.inc.c
index 84e05fb827..aee23e31c6 100644
--- a/target/ppc/translate/vmx-ops.inc.c
+++ b/target/ppc/translate/vmx-ops.inc.c
@@ -276,6 +276,8 @@ GEN_VAFORM_PAIRED(vmsumuhm, vmsumuhs, 19),
GEN_VAFORM_PAIRED(vmsumshm, vmsumshs, 20),
GEN_VAFORM_PAIRED(vsel, vperm, 21),
GEN_VAFORM_PAIRED(vmaddfp, vnmsubfp, 23),
+GEN_HANDLER(vmsumcud, 0x4, 11, 0xFF, 0x00000000, PPC_ALTIVEC),
+GEN_VAFORM_PAIRED(vmladduhm, vmsumudm, 17),
GEN_VXFORM_DUAL(vclzb, vpopcntb, 1, 28, PPC_NONE, PPC2_ALTIVEC_207),
GEN_VXFORM_DUAL(vclzh, vpopcnth, 1, 29, PPC_NONE, PPC2_ALTIVEC_207),
--
2.23.0
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