motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 02:03:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target/arm: Implement M-profile trapping on division by zero

Browse source 
Unlike A-profile, for M-profile the UDIV and SDIV insns can be
configured to raise an exception on division by zero, using the CCR
DIV_0_TRP bit.

Implement support for setting this bit by making the helper functions
raise the appropriate exception.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210730151636.17254-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-07-30 16:16:36 +01:00
parent fc7a5038a6
commit e534629296
5 changed files with 26 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

4
target/arm/helper.h
View file

@ -6,8 +6,8 @@ DEF_HELPER_3(add_saturate, i32, env, i32, i32)
DEF_HELPER_3(sub_saturate, i32, env, i32, i32)
DEF_HELPER_3(add_usaturate, i32, env, i32, i32)
DEF_HELPER_3(sub_usaturate, i32, env, i32, i32)
DEF_HELPER_FLAGS_2(sdiv, TCG_CALL_NO_RWG_SE, s32, s32, s32)
DEF_HELPER_FLAGS_2(udiv, TCG_CALL_NO_RWG_SE, i32, i32, i32)
DEF_HELPER_FLAGS_3(sdiv, TCG_CALL_NO_RWG, s32, env, s32, s32)
DEF_HELPER_FLAGS_3(udiv, TCG_CALL_NO_RWG, i32, env, i32, i32)
DEF_HELPER_FLAGS_1(rbit, TCG_CALL_NO_RWG_SE, i32, i32)
#define PAS_OP(pfx) \