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authorBastian Koppelmann <kbastian@mail.uni-paderborn.de>2015-02-03 18:36:53 +0000
committerBastian Koppelmann <kbastian@mail.uni-paderborn.de>2015-03-03 01:05:44 +0000
commitb00aa8ecbc6fd7468178a0dabc7dfd0b7e1b8cd6 (patch)
tree121a1d9ea47ec36a2d2b51d92961cd2a4720bb8c /target-tricore/helper.h
parent2e430e1cdcbac8825bc44b42844cbb011b859847 (diff)
target-tricore: Add instructions of RRR1 opcode format, which have 0x43 as first opcode
Add helpers: * madd64_q_ssov: multiply two 32 bit q-format number, add them with a 64 bit q-format number and saturate. * madd32_q_add_ssov: add two 64 bit q-format numbers and return a 32 bit result. * maddr_q_ssov: multiplay two 32 bit q-format numbers, add a 32 bit q-format number and saturate. * maddr_q: multiplay two 32 bit q-format numbers and add a 32 bit q-format number. Note: madd instructions in the q format can behave strange, e.g. 0x1 + (0x80000000 * 0x80000000) << 1 for 32 bit signed values does not cause an overflow on the guest, because all intermediate results should be handled as if they are indefinitely precise. We handle this by inverting the overflow bit for all cases: a + (0x80000000 * 0x80000000) << 1. Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tricore/helper.h')
-rw-r--r--target-tricore/helper.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/target-tricore/helper.h b/target-tricore/helper.h
index a1aa12e414..8e9eea5082 100644
--- a/target-tricore/helper.h
+++ b/target-tricore/helper.h
@@ -33,6 +33,9 @@ DEF_HELPER_3(absdif_ssov, i32, env, i32, i32)
DEF_HELPER_4(madd32_ssov, i32, env, i32, i32, i32)
DEF_HELPER_4(madd32_suov, i32, env, i32, i32, i32)
DEF_HELPER_4(madd64_ssov, i64, env, i32, i64, i32)
+DEF_HELPER_5(madd64_q_ssov, i64, env, i64, i32, i32, i32)
+DEF_HELPER_3(madd32_q_add_ssov, i32, env, i64, i64)
+DEF_HELPER_5(maddr_q_ssov, i32, env, i32, i32, i32, i32)
DEF_HELPER_4(madd64_suov, i64, env, i32, i64, i32)
DEF_HELPER_4(msub32_ssov, i32, env, i32, i32, i32)
DEF_HELPER_4(msub32_suov, i32, env, i32, i32, i32)
@@ -47,6 +50,7 @@ DEF_HELPER_2(abs_h, i32, env, i32)
DEF_HELPER_3(absdif_b, i32, env, i32, i32)
DEF_HELPER_3(absdif_h, i32, env, i32, i32)
DEF_HELPER_4(addr_h, i32, env, i64, i32, i32)
+DEF_HELPER_5(maddr_q, i32, env, i32, i32, i32, i32)
DEF_HELPER_3(add_b, i32, env, i32, i32)
DEF_HELPER_3(add_h, i32, env, i32, i32)
DEF_HELPER_3(sub_b, i32, env, i32, i32)