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[Qemu-devel] [PULL 25/32] Add xxsel
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PULL 25/32] Add xxsel |
Date: |
Fri, 20 Dec 2013 02:00:47 +0100 |
From: Tom Musta <address@hidden>
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 <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
target-ppc/translate.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 75226fa..e5d7f9d 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
--
1.8.1.4
- [Qemu-devel] [PULL 19/32] spapr: tie spapr-nvram to -pflash, (continued)
- [Qemu-devel] [PULL 19/32] spapr: tie spapr-nvram to -pflash, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 17/32] spapr-rtas: add ibm, (get|set)-system-parameter, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 18/32] PPC: Use default pci bus name for grackle and heathrow, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 31/32] spapr: make sure RMA is in first mode of first memory node, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 28/32] PPC: Add VSX to hflags, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 27/32] Add xxsldwi, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 22/32] Add VSX Vector Move Instructions, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 26/32] Add xxspltw, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 16/32] spapr-rtas: replace return code constants with macros, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 29/32] device_tree: s/qemu_devtree/qemu_fdt globally, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 25/32] Add xxsel,
Alexander Graf <=
- [Qemu-devel] [PULL 32/32] spapr: limit numa memory regions by ram size, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 21/32] Add VSX Scalar Move Instructions, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 30/32] device_tree: qemu_fdt_setprop: Rename val_array arg, Alexander Graf, 2013/12/19
- [Qemu-devel] [PULL 20/32] roms: Flush icache when writing roms to guest memory, Alexander Graf, 2013/12/19
- Re: [Qemu-devel] [PULL 00/32] ppc patch queue 2013-12-20, Andreas Färber, 2013/12/23