From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:55460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UVnHR-0003UF-C3 for qemu-devel@nongnu.org; Fri, 26 Apr 2013 14:22:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UVnHM-0004zE-1s for qemu-devel@nongnu.org; Fri, 26 Apr 2013 14:21:57 -0400 From: Alexander Graf Date: Fri, 26 Apr 2013 20:21:43 +0200 Message-Id: <1367000509-8833-25-git-send-email-agraf@suse.de> In-Reply-To: <1367000509-8833-1-git-send-email-agraf@suse.de> References: <1367000509-8833-1-git-send-email-agraf@suse.de> Subject: [Qemu-devel] [PATCH 24/30] target-ppc: emulate cmpb instruction List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org Cc: Blue Swirl , qemu-devel@nongnu.org, Aurelien Jarno From: Aurelien Jarno Needed for Power ISA version 2.05 compliance. Reviewed-by: Richard Henderson Signed-off-by: Aurelien Jarno Signed-off-by: Alexander Graf --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 15 +++++++++++++++ target-ppc/translate.c | 8 ++++++++ 3 files changed, 24 insertions(+), 0 deletions(-) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 07397b2..56814b5 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -36,6 +36,7 @@ DEF_HELPER_3(mulldo, i64, env, i64, i64) DEF_HELPER_FLAGS_1(cntlzw, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(popcntb, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) +DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_3(sraw, tl, env, tl, tl) #if defined(TARGET_PPC64) DEF_HELPER_FLAGS_1(cntlzd, TCG_CALL_NO_RWG_SE, tl, tl) diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 54eca9b..e50bdd2 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) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 6cc7893..4d477d2 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -739,6 +739,13 @@ static void gen_isel(DisasContext *ctx) tcg_temp_free_i32(t0); } +/* cmpb: PowerPC 2.05 specification */ +static void gen_cmpb(DisasContext *ctx) +{ + gen_helper_cmpb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], + cpu_gpr[rB(ctx->opcode)]); +} + /*** Integer arithmetic ***/ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, @@ -8463,6 +8470,7 @@ GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpi, 0x0B, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpl, 0x1F, 0x00, 0x01, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpli, 0x0A, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), +GEN_HANDLER_E(cmpb, 0x1F, 0x1C, 0x0F, 0x00000001, PPC_NONE, PPC2_ISA205), GEN_HANDLER(isel, 0x1F, 0x0F, 0xFF, 0x00000001, PPC_ISEL), GEN_HANDLER(addi, 0x0E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(addic, 0x0C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), -- 1.6.0.2