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Violators will be prosecuted for from ; Tue, 22 Nov 2016 18:50:18 +0530 From: Nikunj A Dadhania Date: Tue, 22 Nov 2016 17:16:01 +0530 In-Reply-To: <1479815165-31059-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1479815165-31059-1-git-send-email-nikunj@linux.vnet.ibm.com> Message-Id: <1479815165-31059-6-git-send-email-nikunj@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 5/9] target-ppc: implement lxsd and lxssp instructions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net Cc: qemu-devel@nongnu.org, nikunj@linux.vnet.ibm.com, bharata@linux.vnet.ibm.com lxsd: Load VSX Scalar Dword lxssp: Load VSX Scalar Single Moreover, DS-Form instructions shares the same primary opcode, bits 30:31 are used to decode the instruction. Use a common routine to decode primary opcode(0x39) - ds-form instructions and branch-out depending on bits 30:31. Signed-off-by: Nikunj A Dadhania --- target-ppc/translate.c | 25 +++++++++++++++++++++++++ target-ppc/translate/fp-ops.inc.c | 1 - target-ppc/translate/vsx-impl.inc.c | 21 +++++++++++++++++++++ 3 files changed, 46 insertions(+), 1 deletion(-) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 6bdc433..f280851 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -6053,6 +6053,29 @@ GEN_TM_PRIV_NOOP(trechkpt); #include "translate/spe-impl.inc.c" +/* Handles lfdp, lxsd, lxssp */ +static void gen_dform39(DisasContext *ctx) +{ + switch (ctx->opcode & 0x3) { + case 0: /* lfdp */ + if (ctx->insns_flags2 & PPC2_ISA205) { + return gen_lfdp(ctx); + } + break; + case 2: /* lxsd */ + if (ctx->insns_flags2 & PPC2_ISA300) { + return gen_lxsd(ctx); + } + break; + case 3: /* lxssp */ + if (ctx->insns_flags2 & PPC2_ISA300) { + return gen_lxssp(ctx); + } + break; + } + return gen_invalid(ctx); +} + static opcode_t opcodes[] = { GEN_HANDLER(invalid, 0x00, 0x00, 0x00, 0xFFFFFFFF, PPC_NONE), GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER), @@ -6125,6 +6148,8 @@ GEN_HANDLER(ld, 0x3A, 0xFF, 0xFF, 0x00000000, PPC_64B), GEN_HANDLER(lq, 0x38, 0xFF, 0xFF, 0x00000000, PPC_64BX), GEN_HANDLER(std, 0x3E, 0xFF, 0xFF, 0x00000000, PPC_64B), #endif +/* handles lfdp, lxsd, lxssp */ +GEN_HANDLER_E(dform39, 0x39, 0xFF, 0xFF, 0x00000000, PPC_NONE, PPC2_ISA205), GEN_HANDLER(lmw, 0x2E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(stmw, 0x2F, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(lswi, 0x1F, 0x15, 0x12, 0x00000001, PPC_STRING), diff --git a/target-ppc/translate/fp-ops.inc.c b/target-ppc/translate/fp-ops.inc.c index d36ab4e..3127fa0 100644 --- a/target-ppc/translate/fp-ops.inc.c +++ b/target-ppc/translate/fp-ops.inc.c @@ -68,7 +68,6 @@ GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT) GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT) GEN_HANDLER_E(lfiwax, 0x1f, 0x17, 0x1a, 0x00000001, PPC_NONE, PPC2_ISA205), GEN_HANDLER_E(lfiwzx, 0x1f, 0x17, 0x1b, 0x1, PPC_NONE, PPC2_FP_CVT_ISA206), -GEN_HANDLER_E(lfdp, 0x39, 0xFF, 0xFF, 0x00200003, PPC_NONE, PPC2_ISA205), GEN_HANDLER_E(lfdpx, 0x1F, 0x17, 0x18, 0x00200001, PPC_NONE, PPC2_ISA205), #define GEN_STF(name, stop, opc, type) \ diff --git a/target-ppc/translate/vsx-impl.inc.c b/target-ppc/translate/vsx-impl.inc.c index ed9588e..1d7cd23 100644 --- a/target-ppc/translate/vsx-impl.inc.c +++ b/target-ppc/translate/vsx-impl.inc.c @@ -190,6 +190,27 @@ static void gen_lxvb16x(DisasContext *ctx) tcg_temp_free(EA); } +#define VSX_LOAD_SCALAR_DS(name, operation) \ +static void gen_##name(DisasContext *ctx) \ +{ \ + TCGv EA; \ + TCGv_i64 xth = cpu_vsrh(rD(ctx->opcode) + 32); \ + \ + if (unlikely(!ctx->altivec_enabled)) { \ + gen_exception(ctx, POWERPC_EXCP_VPU); \ + return; \ + } \ + gen_set_access_type(ctx, ACCESS_INT); \ + EA = tcg_temp_new(); \ + gen_addr_imm_index(ctx, EA, 0x03); \ + gen_qemu_##operation(ctx, xth, EA); \ + /* NOTE: cpu_vsrl is undefined */ \ + tcg_temp_free(EA); \ +} + +VSX_LOAD_SCALAR_DS(lxsd, ld64_i64) +VSX_LOAD_SCALAR_DS(lxssp, ld32fs) + #define VSX_STORE_SCALAR(name, operation) \ static void gen_##name(DisasContext *ctx) \ { \ -- 2.7.4