This patch adds the Bit Permute Doubleword (bpermd) instruction,
which was introduced in Power ISA 2.06 as part of the base 64-bit
architecture.
V2: Addressing stylistic comments from Richard Henderson.
Signed-off-by: Tom Musta <tommu...@gmail.com>
Reviewed-by: Richard Henderson <address@hidden>
---
target-ppc/helper.h | 1 +
target-ppc/int_helper.c | 20 ++++++++++++++++++++
target-ppc/translate.c | 10 ++++++++++
3 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 6250eba..1ec9c65 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -41,6 +41,7 @@ DEF_HELPER_3(sraw, tl, env, tl, tl)
#if defined(TARGET_PPC64)
DEF_HELPER_FLAGS_1(cntlzd, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_1(popcntd, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_3(bpermd, i64, env, i64, i64)
DEF_HELPER_3(srad, tl, env, tl, tl)
#endif
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index e50bdd2..abc69a7 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -53,6 +53,26 @@ target_ulong helper_cntlzd(target_ulong t)
}
#endif
+#if defined(TARGET_PPC64)
+
+uint64_t helper_bpermd(CPUPPCState *env, uint64_t rs, uint64_t rb)
+{
+ int i;
+ uint64_t ra = 0;
+
+ for (i = 0; i < 8; i++) {
+ int index = (rs >> (i*8)) & 0xFF;
+ if (index < 64) {
+ if (rb & (1ul << (63-index))) {
+ ra |= 1 << i;
+ }
+ }
+ }
+ return ra;
+}
+
+#endif
+
target_ulong helper_cmpb(target_ulong rs, target_ulong rb)
{
target_ulong mask = 0xff;
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 1f7e499..0d39de2 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -1525,6 +1525,15 @@ static void gen_prtyd(DisasContext *ctx)
#endif
#if defined(TARGET_PPC64)
+/* bpermd */
+static void gen_bpermd(DisasContext *ctx)
+{
+ gen_helper_bpermd(cpu_gpr[rA(ctx->opcode)], cpu_env,
+ cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
+}
+#endif
+
+#if defined(TARGET_PPC64)
/* extsw & extsw. */
GEN_LOGICAL1(extsw, tcg_gen_ext32s_tl, 0x1E, PPC_64B);
@@ -9322,6 +9331,7 @@ GEN_HANDLER_E(prtyw, 0x1F, 0x1A, 0x04, 0x0000F801,
PPC_NONE, PPC2_ISA205),
GEN_HANDLER(popcntd, 0x1F, 0x1A, 0x0F, 0x0000F801, PPC_POPCNTWD),
GEN_HANDLER(cntlzd, 0x1F, 0x1A, 0x01, 0x00000000, PPC_64B),
GEN_HANDLER_E(prtyd, 0x1F, 0x1A, 0x05, 0x0000F801, PPC_NONE, PPC2_ISA205),
+GEN_HANDLER_E(bpermd, 0x1F, 0x1C, 0x07, 0x00000001, PPC_NONE, PPC2_ISA206),
#endif
GEN_HANDLER(rlwimi, 0x14, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
GEN_HANDLER(rlwinm, 0x15, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
--
1.7.1
