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| author | Aurelien Jarno | 2013-04-20 10:56:16 +0200 |
|---|---|---|
| committer | Alexander Graf | 2013-04-26 23:02:42 +0200 |
| commit | fcfda20f2f5df30d88d087d443c1c08649df8827 (patch) | |
| tree | 6e26b28a40150f21c7fb3ed62e967b7a5fbaea5d /target-ppc/int_helper.c | |
| parent | target-ppc: add instruction flags for Book I 2.05 (diff) | |
| download | qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.tar.gz qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.tar.xz qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.zip | |
target-ppc: emulate cmpb instruction
Needed for Power ISA version 2.05 compliance.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/int_helper.c')
| -rw-r--r-- | target-ppc/int_helper.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 54eca9bbee..e50bdd20ec 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -53,6 +53,21 @@ target_ulong helper_cntlzd(target_ulong t) } #endif +target_ulong helper_cmpb(target_ulong rs, target_ulong rb) +{ + target_ulong mask = 0xff; + target_ulong ra = 0; + int i; + + for (i = 0; i < sizeof(target_ulong); i++) { + if ((rs & mask) == (rb & mask)) { + ra |= mask; + } + mask <<= 8; + } + return ra; +} + /* shift right arithmetic helper */ target_ulong helper_sraw(CPUPPCState *env, target_ulong value, target_ulong shift) |