diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-01-07 10:05:52 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:39 +0100 |
| commit | e44259b6d4f4de69a868510a198b2696f24118a1 (patch) | |
| tree | 08d61c8be5c091ca24b46a85ce20023fc4b442bc /target-ppc | |
| parent | 98d1eb2748e84f9e3118d1bd2495f0cc917ac18d (diff) | |
| download | qemu-e44259b6d4f4de69a868510a198b2696f24118a1.tar.gz | |
target-ppc: Add ISA2.06 divde[o] Instructions
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>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/helper.h | 1 | ||||
| -rw-r--r-- | target-ppc/int_helper.c | 23 | ||||
| -rw-r--r-- | target-ppc/translate.c | 5 |
3 files changed, 28 insertions, 1 deletions
diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 9865e1707e..a09a6181b4 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -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) diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 6f3d8fd805..920dba7891 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -65,6 +65,29 @@ 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 = divs128(&rt, &ra, rb); + + if (unlikely(overflow)) { + rt = 0; /* Undefined */ + } + + if (oe) { + + if (unlikely(overflow)) { + env->so = env->ov = 1; + } else { + env->ov = 0; + } + } + + return rt; +} + #endif diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 55f259b07f..7751b294bc 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -1049,7 +1049,8 @@ GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1); GEN_DIVE(divdeu, divdeu, 0); GEN_DIVE(divdeuo, divdeu, 1); - +GEN_DIVE(divde, divde, 0); +GEN_DIVE(divdeo, divde, 1); #endif /* mulhw mulhw. */ @@ -9727,6 +9728,8 @@ 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), +GEN_HANDLER_E(divde, 0x1F, 0x09, 0x0D, 0, PPC_NONE, PPC2_DIVE_ISA206), +GEN_HANDLER_E(divdeo, 0x1F, 0x09, 0x1D, 0, PPC_NONE, PPC2_DIVE_ISA206), #undef GEN_INT_ARITH_MUL_HELPER #define GEN_INT_ARITH_MUL_HELPER(name, opc3) \ |