From 551e3ef72e59d3975073e2ea3aaf2f7508323063 Mon Sep 17 00:00:00 2001 From: Tom Musta Date: Fri, 1 Nov 2013 08:21:21 -0500 Subject: Add xxsel This patch adds the VSX Select (xxsel) instruction. The xxsel instruction has four VSR operands. Thus the xC instruction decoder is added. The xxsel instruction is massively overloaded in the opcode table since only bits 26 and 27 are opcode bits. This overloading is done in matrix fashion with two macros (GEN_XXSEL_ROW and GEN_XX_SEL). V2: (1) eliminated unecessary XXSEL macro (2) tighter implementation using tcg_gen_andc_i64. Signed-off-by: Tom Musta Reviewed-by: Richard Henderson Signed-off-by: Alexander Graf --- target-ppc/translate.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 75226fa402..e5d7f9d3aa 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -497,6 +497,7 @@ EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5); EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5); EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5); EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5); +EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5); EXTRACT_HELPER(DM, 8, 2); /*****************************************************************************/ /* PowerPC instructions table */ @@ -7325,6 +7326,38 @@ static void glue(gen_, name)(DisasContext * ctx) \ VSX_XXMRG(xxmrghw, 1) VSX_XXMRG(xxmrglw, 0) +static void gen_xxsel(DisasContext * ctx) +{ + TCGv_i64 a, b, c; + if (unlikely(!ctx->vsx_enabled)) { + gen_exception(ctx, POWERPC_EXCP_VSXU); + return; + } + a = tcg_temp_new(); + b = tcg_temp_new(); + c = tcg_temp_new(); + + tcg_gen_mov_i64(a, cpu_vsrh(xA(ctx->opcode))); + tcg_gen_mov_i64(b, cpu_vsrh(xB(ctx->opcode))); + tcg_gen_mov_i64(c, cpu_vsrh(xC(ctx->opcode))); + + tcg_gen_and_i64(b, b, c); + tcg_gen_andc_i64(a, a, c); + tcg_gen_or_i64(cpu_vsrh(xT(ctx->opcode)), a, b); + + tcg_gen_mov_i64(a, cpu_vsrl(xA(ctx->opcode))); + tcg_gen_mov_i64(b, cpu_vsrl(xB(ctx->opcode))); + tcg_gen_mov_i64(c, cpu_vsrl(xC(ctx->opcode))); + + tcg_gen_and_i64(b, b, c); + tcg_gen_andc_i64(a, a, c); + tcg_gen_or_i64(cpu_vsrl(xT(ctx->opcode)), a, b); + + tcg_temp_free(a); + tcg_temp_free(b); + tcg_temp_free(c); +} + /*** SPE extension ***/ /* Register moves */ @@ -9840,6 +9873,49 @@ VSX_LOGICAL(xxlnor, 0x8, 0x14, PPC2_VSX), GEN_XX3FORM(xxmrghw, 0x08, 0x02, PPC2_VSX), GEN_XX3FORM(xxmrglw, 0x08, 0x06, PPC2_VSX), +#define GEN_XXSEL_ROW(opc3) \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x18, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x19, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1A, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1B, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1C, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1D, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1E, opc3, 0, PPC_NONE, PPC2_VSX), \ +GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x1F, opc3, 0, PPC_NONE, PPC2_VSX), \ + +GEN_XXSEL_ROW(0x00) +GEN_XXSEL_ROW(0x01) +GEN_XXSEL_ROW(0x02) +GEN_XXSEL_ROW(0x03) +GEN_XXSEL_ROW(0x04) +GEN_XXSEL_ROW(0x05) +GEN_XXSEL_ROW(0x06) +GEN_XXSEL_ROW(0x07) +GEN_XXSEL_ROW(0x08) +GEN_XXSEL_ROW(0x09) +GEN_XXSEL_ROW(0x0A) +GEN_XXSEL_ROW(0x0B) +GEN_XXSEL_ROW(0x0C) +GEN_XXSEL_ROW(0x0D) +GEN_XXSEL_ROW(0x0E) +GEN_XXSEL_ROW(0x0F) +GEN_XXSEL_ROW(0x10) +GEN_XXSEL_ROW(0x11) +GEN_XXSEL_ROW(0x12) +GEN_XXSEL_ROW(0x13) +GEN_XXSEL_ROW(0x14) +GEN_XXSEL_ROW(0x15) +GEN_XXSEL_ROW(0x16) +GEN_XXSEL_ROW(0x17) +GEN_XXSEL_ROW(0x18) +GEN_XXSEL_ROW(0x19) +GEN_XXSEL_ROW(0x1A) +GEN_XXSEL_ROW(0x1B) +GEN_XXSEL_ROW(0x1C) +GEN_XXSEL_ROW(0x1D) +GEN_XXSEL_ROW(0x1E) +GEN_XXSEL_ROW(0x1F) + GEN_XX3FORM_DM(xxpermdi, 0x08, 0x01), #undef GEN_SPE -- cgit v1.2.3