From 0a75773fed3f2d74d697fae5aee9ae8f18298631 Mon Sep 17 00:00:00 2001 From: Jonathan White Date: Mon, 15 Sep 2008 12:27:10 -0600 Subject: cell: Added support for ABS instruction --- src/gallium/drivers/cell/ppu/cell_gen_fp.c | 31 +++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'src') diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index 9eae57bb76..33f3c74b56 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -424,7 +424,7 @@ static boolean emit_MAD(struct codegen *gen, const struct tgsi_full_instruction *inst) { int ch; - spe_comment(gen->f, -4, "MUL:"); + spe_comment(gen->f, -4, "MAD:"); for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); @@ -463,6 +463,33 @@ emit_MUL(struct codegen *gen, const struct tgsi_full_instruction *inst) return true; } +/** + * Emit absolute value. See emit_ADD for comments. + */ +static boolean +emit_ABS(struct codegen *gen, const struct tgsi_full_instruction *inst) +{ + int ch; + spe_comment(gen->f, -4, "ABS:"); + for (ch = 0; ch < 4; ch++) { + if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + const int bit31mask_reg = get_itemp(gen); + + /* mask with bit 31 set, the rest cleared */ + spe_load_int(gen->f, bit31mask_reg, (1 << 31)); + + /* d = sign bit cleared in s1 */ + spe_andc(gen->f, d_reg, s1_reg, bit31mask_reg); + + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); + free_itemps(gen); + } + } + return true; +} + /** * Emit set-if-greater-than. * Note that the SPE fcgt instruction produces 0x0 and 0xffffffff as @@ -625,6 +652,8 @@ emit_instruction(struct codegen *gen, return emit_SUB(gen, inst); case TGSI_OPCODE_MAD: return emit_MAD(gen, inst); + case TGSI_OPCODE_ABS: + return emit_ABS(gen, inst); case TGSI_OPCODE_SGT: return emit_SGT(gen, inst); case TGSI_OPCODE_END: -- cgit v1.2.3