diff options
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_gen_fp.c')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 141 |
1 files changed, 94 insertions, 47 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index 3065869d04..640ebcadbb 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -84,6 +84,8 @@ struct codegen /** Index of execution mask register */ int exec_mask_reg; + int frame_size; /**< Stack frame size, in words */ + struct spe_function *f; boolean error; }; @@ -208,7 +210,7 @@ get_src_reg(struct codegen *gen, reg = get_itemp(gen); reg_is_itemp = TRUE; /* Load: reg = memory[(machine_reg) + offset] */ - spe_lqd(gen->f, reg, gen->inputs_reg, offset); + spe_lqd(gen->f, reg, gen->inputs_reg, offset * 16); } break; case TGSI_FILE_IMMEDIATE: @@ -221,7 +223,7 @@ get_src_reg(struct codegen *gen, reg = get_itemp(gen); reg_is_itemp = TRUE; /* Load: reg = memory[(machine_reg) + offset] */ - spe_lqd(gen->f, reg, gen->constants_reg, offset); + spe_lqd(gen->f, reg, gen->constants_reg, offset * 16); } break; default: @@ -325,6 +327,7 @@ store_dest_reg(struct codegen *gen, } else { /* we're not inside a condition or loop: do nothing special */ + } break; case TGSI_FILE_OUTPUT: @@ -337,17 +340,17 @@ store_dest_reg(struct codegen *gen, /* First read the current value from memory: * Load: curval = memory[(machine_reg) + offset] */ - spe_lqd(gen->f, curval_reg, gen->outputs_reg, offset); + spe_lqd(gen->f, curval_reg, gen->outputs_reg, offset * 16); /* Mix curval with newvalue according to exec mask: * d[i] = mask_reg[i] ? value_reg : d_reg */ spe_selb(gen->f, curval_reg, curval_reg, value_reg, exec_reg); /* Store: memory[(machine_reg) + offset] = curval */ - spe_stqd(gen->f, curval_reg, gen->outputs_reg, offset); + spe_stqd(gen->f, curval_reg, gen->outputs_reg, offset * 16); } else { /* Store: memory[(machine_reg) + offset] = reg */ - spe_stqd(gen->f, value_reg, gen->outputs_reg, offset); + spe_stqd(gen->f, value_reg, gen->outputs_reg, offset * 16); } } break; @@ -357,6 +360,41 @@ store_dest_reg(struct codegen *gen, } + +static void +emit_prologue(struct codegen *gen) +{ + gen->frame_size = 256+128; /* XXX temporary */ + + spe_comment(gen->f, -4, "Function prologue:"); + + /* save $lr on stack # stqd $lr,16($sp) */ + spe_stqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); + + /* save stack pointer # stqd $sp,-frameSize($sp) */ + spe_stqd(gen->f, SPE_REG_SP, SPE_REG_SP, -gen->frame_size); + + /* adjust stack pointer # ai $sp,$sp,-frameSize */ + spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, -gen->frame_size); +} + + +static void +emit_epilogue(struct codegen *gen) +{ + spe_comment(gen->f, -4, "Function epilogue:"); + + /* restore stack pointer # ai $sp,$sp,frameSize */ + spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, gen->frame_size); + + /* restore $lr # lqd $lr,16($sp) */ + spe_lqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); + + /* return from function call */ + spe_bi(gen->f, SPE_REG_RA, 0, 0); +} + + static boolean emit_MOV(struct codegen *gen, const struct tgsi_full_instruction *inst) { @@ -588,6 +626,7 @@ emit_DP3(struct codegen *gen, const struct tgsi_full_instruction *inst) int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]); int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]); int tmp_reg = get_itemp(gen); + /* t = x0 * x1 */ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg); @@ -603,7 +642,9 @@ emit_DP3(struct codegen *gen, const struct tgsi_full_instruction *inst) for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { - store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]); + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + spe_move(gen->f, d_reg, tmp_reg); + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); } } @@ -623,6 +664,7 @@ emit_DP4(struct codegen *gen, const struct tgsi_full_instruction *inst) int s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]); int s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]); int tmp_reg = get_itemp(gen); + /* t = x0 * x1 */ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg); @@ -643,6 +685,8 @@ emit_DP4(struct codegen *gen, const struct tgsi_full_instruction *inst) for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + spe_move(gen->f, d_reg, tmp_reg); store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]); } } @@ -683,6 +727,8 @@ emit_DPH(struct codegen *gen, const struct tgsi_full_instruction *inst) for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + spe_move(gen->f, d_reg, tmp_reg); store_dest_reg(gen, tmp_reg, ch, &inst->FullDstRegisters[0]); } } @@ -1112,9 +1158,6 @@ emit_function_call(struct codegen *gen, uint addr; int ch; - /* XXX temporary value */ - const int frameSize = 64; /* stack frame (activation record) size */ - assert(num_args <= 3); /* lookup function address */ @@ -1136,48 +1179,45 @@ emit_function_call(struct codegen *gen, for (ch = 0; ch < 4; ch++) { if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { - int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); - int s_regs[3]; - uint a; + int s_regs[3], d_reg; + ubyte usedRegs[SPE_NUM_REGS]; + uint a, i, numUsed; + for (a = 0; a < num_args; a++) { s_regs[a] = get_src_reg(gen, ch, &inst->FullSrcRegisters[a]); } + d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); - /* Basically: - * save registers on stack - * move parameters to registers 3, 4, 5... - * call function - * save return value (reg 3) - * restore registers from stack - */ + numUsed = spe_get_registers_used(gen->f, usedRegs); + assert(numUsed < gen->frame_size / 16 - 32); - /* XXX hack: load first function param */ - spe_move(gen->f, 3, s_regs[0]); - - /* save $lr on stack # stqd $lr,16($sp) */ - spe_stqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); - /* save stack pointer # stqd $sp,-frameSize($sp) */ - spe_stqd(gen->f, SPE_REG_SP, SPE_REG_SP, -frameSize); - - /* XXX save registers to stack here */ + /* save registers to stack */ + for (i = 0; i < numUsed; i++) { + uint reg = usedRegs[i]; + int offset = 2 + i; + spe_stqd(gen->f, reg, SPE_REG_SP, 16 * offset); + } - /* adjust stack pointer # ai $sp,$sp,-frameSize */ - spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, -frameSize); + /* setup function arguments */ + for (a = 0; a < num_args; a++) { + spe_move(gen->f, 3 + a, s_regs[a]); + } /* branch to function, save return addr */ spe_brasl(gen->f, SPE_REG_RA, addr); - /* restore stack pointer # ai $sp,$sp,frameSize */ - spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, frameSize); - - /* XXX restore registers from stack here */ - - /* restore $lr # lqd $lr,16($sp) */ - spe_lqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); - - /* XXX hack: save function's return value */ + /* save function's return value */ spe_move(gen->f, d_reg, 3); + /* restore registers from stack */ + for (i = 0; i < numUsed; i++) { + uint reg = usedRegs[i]; + if (reg != d_reg) { + int offset = 2 + i; + spe_lqd(gen->f, reg, SPE_REG_SP, 16 * offset); + } + } + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); free_itemps(gen); } @@ -1202,10 +1242,11 @@ emit_MAX(struct codegen *gen, const struct tgsi_full_instruction *inst) int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]); int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + int tmp_reg = get_itemp(gen); /* d = (s1 > s2) ? s1 : s2 */ - spe_fcgt(gen->f, d_reg, s1_reg, s2_reg); - spe_selb(gen->f, d_reg, s2_reg, s1_reg, d_reg); + spe_fcgt(gen->f, tmp_reg, s1_reg, s2_reg); + spe_selb(gen->f, d_reg, s2_reg, s1_reg, tmp_reg); store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); free_itemps(gen); @@ -1230,10 +1271,11 @@ emit_MIN(struct codegen *gen, const struct tgsi_full_instruction *inst) int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]); int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]); int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + int tmp_reg = get_itemp(gen); /* d = (s2 > s1) ? s1 : s2 */ - spe_fcgt(gen->f, d_reg, s2_reg, s1_reg); - spe_selb(gen->f, d_reg, s2_reg, s1_reg, d_reg); + spe_fcgt(gen->f, tmp_reg, s2_reg, s1_reg); + spe_selb(gen->f, d_reg, s2_reg, s1_reg, tmp_reg); store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); free_itemps(gen); @@ -1346,8 +1388,7 @@ static boolean emit_END(struct codegen *gen) { spe_comment(gen->f, -4, "END:"); - /* return from function call */ - spe_bi(gen->f, SPE_REG_RA, 0, 0); + emit_epilogue(gen); return true; } @@ -1420,6 +1461,10 @@ emit_instruction(struct codegen *gen, return emit_function_call(gen, inst, "spu_sin", 1); case TGSI_OPCODE_POW: return emit_function_call(gen, inst, "spu_pow", 2); + case TGSI_OPCODE_EXPBASE2: + return emit_function_call(gen, inst, "spu_exp2", 1); + case TGSI_OPCODE_LOGBASE2: + return emit_function_call(gen, inst, "spu_log2", 1); case TGSI_OPCODE_IF: return emit_IF(gen, inst); @@ -1532,6 +1577,7 @@ emit_declaration(struct cell_context *cell, } + /** * Translate TGSI shader code to SPE instructions. This is done when * the state tracker gives us a new shader (via pipe->create_fs_state()). @@ -1571,12 +1617,14 @@ cell_gen_fragment_program(struct cell_context *cell, tgsi_parse_init(&parse, tokens); + emit_prologue(&gen); + while (!tgsi_parse_end_of_tokens(&parse) && !gen.error) { tgsi_parse_token(&parse); switch (parse.FullToken.Token.Type) { case TGSI_TOKEN_TYPE_IMMEDIATE: - if (!emit_immediate(&gen, &parse.FullToken.FullImmediate)) + if (!emit_immediate(&gen, &parse.FullToken.FullImmediate)) gen.error = true; break; @@ -1595,7 +1643,6 @@ cell_gen_fragment_program(struct cell_context *cell, } } - if (gen.error) { /* terminate the SPE code */ return emit_END(&gen); |