diff options
| author | Bastian Koppelmann <kbastian@mail.uni-paderborn.de> | 2014-09-01 12:59:52 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-09-01 14:49:21 +0100 |
| commit | 2692802a37a53a832c76d9beec88c65972bc2a91 (patch) | |
| tree | 48935e66bbfe1a7f3d4be66b52fa2e4be265babb /target-tricore/op_helper.c | |
| parent | 0707ec1bea17bb006ba362f2cd6ec7b2fb94f789 (diff) | |
target-tricore: Add instructions of SRR opcode format
Add instructions of SRR opcode format.
Add helper for add/sub_ssov.
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-id: 1409572800-4116-8-git-send-email-kbastian@mail.uni-paderborn.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-tricore/op_helper.c')
| -rw-r--r-- | target-tricore/op_helper.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target-tricore/op_helper.c b/target-tricore/op_helper.c index c1342e9da5..664a1005de 100644 --- a/target-tricore/op_helper.c +++ b/target-tricore/op_helper.c @@ -20,6 +20,49 @@ #include "exec/helper-proto.h" #include "exec/cpu_ldst.h" +#define SSOV(env, ret, arg, len) do { \ + int64_t max_pos = INT##len ##_MAX; \ + int64_t max_neg = INT##len ##_MIN; \ + if (arg > max_pos) { \ + env->PSW_USB_V = (1 << 31); \ + env->PSW_USB_SV = (1 << 31); \ + ret = (target_ulong)max_pos; \ + } else { \ + if (arg < max_neg) { \ + env->PSW_USB_V = (1 << 31); \ + env->PSW_USB_SV = (1 << 31); \ + ret = (target_ulong)max_neg; \ + } else { \ + env->PSW_USB_V = 0; \ + ret = (target_ulong)arg; \ + } \ + } \ + env->PSW_USB_AV = arg ^ arg * 2u; \ + env->PSW_USB_SAV |= env->PSW_USB_AV; \ +} while (0) + +target_ulong helper_add_ssov(CPUTriCoreState *env, target_ulong r1, + target_ulong r2) +{ + target_ulong ret; + int64_t t1 = sextract64(r1, 0, 32); + int64_t t2 = sextract64(r2, 0, 32); + int64_t result = t1 + t2; + SSOV(env, ret, result, 32); + return ret; +} + +target_ulong helper_sub_ssov(CPUTriCoreState *env, target_ulong r1, + target_ulong r2) +{ + target_ulong ret; + int64_t t1 = sextract64(r1, 0, 32); + int64_t t2 = sextract64(r2, 0, 32); + int64_t result = t1 - t2; + SSOV(env, ret, result, 32); + return ret; +} + static inline void QEMU_NORETURN do_raise_exception_err(CPUTriCoreState *env, uint32_t exception, int error_code, |