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target-openrisc: Write back result before FPE exception

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The architecture manual is unclear about this, but the or1ksim
does writeback before the exception.  This requires splitting
the helpers in half, with the exception raised by the second.

Acked-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2015-02-18 20:40:38 -08:00 • committed by Richard Henderson
parent bbd87423ea
commit 4e2d30079c
3 changed files with 125 additions and 251 deletions
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25
target/openrisc/helper.h
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@ -24,17 +24,19 @@ DEF_HELPER_FLAGS_1(ove_ov, TCG_CALL_NO_WG, void, env)
DEF_HELPER_FLAGS_1(ove_cyov, TCG_CALL_NO_WG, void, env)
/* float */
DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_WG, i64, env, i64)
DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_WG, i32, env, i32)
DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_WG, i64, env, i64)
DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_WG, i32, env, i32)
DEF_HELPER_FLAGS_1(update_fpcsr, TCG_CALL_NO_WG, void, env)
DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_WG, i32, env, i32, i32, i32)
DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_WG, i64, env, i64, i64, i64)
DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_RWG, i64, env, i64)
DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_RWG, i32, env, i32)
DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_RWG, i64, env, i64)
DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_RWG, i32, env, i32)
DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_RWG, i32, env, i32, i32, i32)
DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_RWG, i64, env, i64, i64, i64)
#define FOP_CALC(op) \
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, i64, env, i64, i64)
FOP_CALC(add)
FOP_CALC(sub)
FOP_CALC(mul)
@ -43,14 +45,11 @@ FOP_CALC(rem)
#undef FOP_CALC
#define FOP_CMP(op) \
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_WG, i32, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, tl, env, i32, i32) \
DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, tl, env, i64, i64)
FOP_CMP(eq)
FOP_CMP(lt)
FOP_CMP(le)
FOP_CMP(ne)
FOP_CMP(gt)
FOP_CMP(ge)
#undef FOP_CMP
/* interrupt */