@@ -32,6 +32,7 @@ DEF_HELPER_5(lscbx, tl, env, tl, i32, i32, i32)
#if defined(TARGET_PPC64)
DEF_HELPER_3(mulldo, i64, env, i64, i64)
DEF_HELPER_4(divdeu, i64, env, i64, i64, i32)
+DEF_HELPER_4(divde, i64, env, i64, i64, i32)
#endif
DEF_HELPER_FLAGS_1(cntlzw, TCG_CALL_NO_RWG_SE, tl, tl)
@@ -85,6 +85,50 @@ uint64_t helper_divdeu(CPUPPCState *env, uint64_t ra, uint64_t rb, uint32_t oe)
return rt;
}
+uint64_t helper_divde(CPUPPCState *env, uint64_t rau, uint64_t rbu, uint32_t oe)
+{
+ int64_t rt = 0;
+ int64_t ra = (int64_t)rau;
+ int64_t rb = (int64_t)rbu;
+ int overflow = 0;
+
+ int sgna = (ra < 0) ? 1 : 0;
+ int sgnb = (rb < 0) ? 1 : 0;
+
+ if (sgna) {
+ ra = 0 - ra;
+ }
+
+ if (sgnb) {
+ rb = 0 - rb;
+ }
+
+ _divide_u64_extended(ra, rb, (uint64_t *)&rt, &overflow);
+
+ if (sgna ^ sgnb) {
+ rt = 0 - rt;
+ }
+
+ if (oe) {
+
+ if (overflow == 0) {
+ int sgnt = (rt < 0) ? 1 : 0;
+ if (sgnt ^ (sgna ^ sgnb)) {
+ overflow = 1;
+ rt = 0; /* undefined */
+ }
+ }
+
+ if (unlikely(overflow)) {
+ env->so = env->ov = 1;
+ } else {
+ env->ov = 0;
+ }
+ }
+
+ return rt;
+}
+
#endif
@@ -1048,6 +1048,8 @@ static void gen_##name(DisasContext *ctx) \
GEN_DIVDE(divdeu, divdeu, 0);
GEN_DIVDE(divdeuo, divdeu, 1);
+GEN_DIVDE(divde, divde, 0);
+GEN_DIVDE(divdeo, divde, 1);
#endif
@@ -9613,6 +9615,8 @@ GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1),
GEN_HANDLER_E(divdeu, 0x1F, 0x09, 0x0C, 0x00000000, PPC_NONE, PPC2_ISA206),
GEN_HANDLER_E(divdeuo, 0x1F, 0x09, 0x1C, 0x00000000, PPC_NONE, PPC2_ISA206),
+GEN_HANDLER_E(divde, 0x1F, 0x09, 0x0D, 0x00000000, PPC_NONE, PPC2_ISA206),
+GEN_HANDLER_E(divdeo, 0x1F, 0x09, 0x1D, 0x00000000, PPC_NONE, PPC2_ISA206),
#undef GEN_INT_ARITH_MUL_HELPER
#define GEN_INT_ARITH_MUL_HELPER(name, opc3) \
This patch adds the Divide Doubleword Extended instructions. The implementation builds on the unsigned helper provided in the previous patch. Signed-off-by: Tom Musta <tommusta@gmail.com> --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ target-ppc/translate.c | 4 ++++ 3 files changed, 49 insertions(+), 0 deletions(-)