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authorTom Musta <tommusta@gmail.com>2014-01-07 10:05:51 -0600
committerAlexander Graf <agraf@suse.de>2014-03-05 03:06:39 +0100
commit98d1eb2748e84f9e3118d1bd2495f0cc917ac18d (patch)
tree7768c567eff4633cb49b55878c29dc4580dc45de /target-ppc/translate.c
parenta824bc191a90d86980a9ed090cb1d1219faaf8e7 (diff)
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target-ppc: Add ISA2.06 divdeu[o] Instructions
This patch adds the Divide Doubleword Extended Unsigned instructions. This instruction requires dividing a 128-bit value by a 64 bit value. Since 128 bit integer division is not supported in TCG, a helper is used. An architecture independent 128-bit division routine is added to host-utils. Signed-off-by: Tom Musta <tommusta@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net> [agraf: use ||] Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/translate.c')
-rw-r--r--target-ppc/translate.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f00384b..55f259b 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -984,6 +984,20 @@ GEN_INT_ARITH_DIVW(divwuo, 0x1E, 0, 1);
/* divw divw. divwo divwo. */
GEN_INT_ARITH_DIVW(divw, 0x0F, 1, 0);
GEN_INT_ARITH_DIVW(divwo, 0x1F, 1, 1);
+
+/* div[wd]eu[o][.] */
+#define GEN_DIVE(name, hlpr, compute_ov) \
+static void gen_##name(DisasContext *ctx) \
+{ \
+ TCGv_i32 t0 = tcg_const_i32(compute_ov); \
+ gen_helper_##hlpr(cpu_gpr[rD(ctx->opcode)], cpu_env, \
+ cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], t0); \
+ tcg_temp_free_i32(t0); \
+ if (unlikely(Rc(ctx->opcode) != 0)) { \
+ gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]); \
+ } \
+}
+
#if defined(TARGET_PPC64)
static inline void gen_op_arith_divd(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, int sign, int compute_ov)
@@ -1032,6 +1046,10 @@ GEN_INT_ARITH_DIVD(divduo, 0x1E, 0, 1);
/* divw divw. divwo divwo. */
GEN_INT_ARITH_DIVD(divd, 0x0F, 1, 0);
GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1);
+
+GEN_DIVE(divdeu, divdeu, 0);
+GEN_DIVE(divdeuo, divdeu, 1);
+
#endif
/* mulhw mulhw. */
@@ -9707,6 +9725,9 @@ GEN_INT_ARITH_DIVD(divduo, 0x1E, 0, 1),
GEN_INT_ARITH_DIVD(divd, 0x0F, 1, 0),
GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1),
+GEN_HANDLER_E(divdeu, 0x1F, 0x09, 0x0C, 0, PPC_NONE, PPC2_DIVE_ISA206),
+GEN_HANDLER_E(divdeuo, 0x1F, 0x09, 0x1C, 0, PPC_NONE, PPC2_DIVE_ISA206),
+
#undef GEN_INT_ARITH_MUL_HELPER
#define GEN_INT_ARITH_MUL_HELPER(name, opc3) \
GEN_HANDLER(name, 0x1F, 0x09, opc3, 0x00000000, PPC_64B)