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-rw-r--r--src/gallium/drivers/cell/ppu/cell_gen_fp.c2046
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diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
new file mode 100644
index 0000000000..5a889a6119
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+++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
@@ -0,0 +1,2046 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * Copyright 2009 VMware, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+
+/**
+ * Generate SPU fragment program/shader code.
+ *
+ * Note that we generate SOA-style code here. So each TGSI instruction
+ * operates on four pixels (and is translated into four SPU instructions,
+ * generally speaking).
+ *
+ * \author Brian Paul
+ */
+
+#include <math.h>
+#include "pipe/p_defines.h"
+#include "pipe/p_state.h"
+#include "pipe/p_shader_tokens.h"
+#include "tgsi/tgsi_parse.h"
+#include "tgsi/tgsi_util.h"
+#include "tgsi/tgsi_exec.h"
+#include "tgsi/tgsi_dump.h"
+#include "rtasm/rtasm_ppc_spe.h"
+#include "util/u_memory.h"
+#include "cell_context.h"
+#include "cell_gen_fp.h"
+
+
+#define MAX_TEMPS 16
+#define MAX_IMMED 8
+
+#define CHAN_X 0
+#define CHAN_Y 1
+#define CHAN_Z 2
+#define CHAN_W 3
+
+/**
+ * Context needed during code generation.
+ */
+struct codegen
+{
+ struct cell_context *cell;
+ int inputs_reg; /**< 1st function parameter */
+ int outputs_reg; /**< 2nd function parameter */
+ int constants_reg; /**< 3rd function parameter */
+ int temp_regs[MAX_TEMPS][4]; /**< maps TGSI temps to SPE registers */
+ int imm_regs[MAX_IMMED][4]; /**< maps TGSI immediates to SPE registers */
+
+ int num_imm; /**< number of immediates */
+
+ int one_reg; /**< register containing {1.0, 1.0, 1.0, 1.0} */
+
+ int addr_reg; /**< address register, integer values */
+
+ /** Per-instruction temps / intermediate temps */
+ int num_itemps;
+ int itemps[12];
+
+ /** Current IF/ELSE/ENDIF nesting level */
+ int if_nesting;
+ /** Current BGNLOOP/ENDLOOP nesting level */
+ int loop_nesting;
+ /** Location of start of current loop */
+ int loop_start;
+
+ /** Index of if/conditional mask register */
+ int cond_mask_reg;
+ /** Index of loop mask register */
+ int loop_mask_reg;
+
+ /** Index of master execution mask register */
+ int exec_mask_reg;
+
+ /** KIL mask: indicates which fragments have been killed */
+ int kill_mask_reg;
+
+ int frame_size; /**< Stack frame size, in words */
+
+ struct spe_function *f;
+ boolean error;
+};
+
+
+/**
+ * Allocate an intermediate temporary register.
+ */
+static int
+get_itemp(struct codegen *gen)
+{
+ int t = spe_allocate_available_register(gen->f);
+ assert(gen->num_itemps < Elements(gen->itemps));
+ gen->itemps[gen->num_itemps++] = t;
+ return t;
+}
+
+/**
+ * Free all intermediate temporary registers. To be called after each
+ * instruction has been emitted.
+ */
+static void
+free_itemps(struct codegen *gen)
+{
+ int i;
+ for (i = 0; i < gen->num_itemps; i++) {
+ spe_release_register(gen->f, gen->itemps[i]);
+ }
+ gen->num_itemps = 0;
+}
+
+
+/**
+ * Return index of an SPE register containing {1.0, 1.0, 1.0, 1.0}.
+ * The register is allocated and initialized upon the first call.
+ */
+static int
+get_const_one_reg(struct codegen *gen)
+{
+ if (gen->one_reg <= 0) {
+ gen->one_reg = spe_allocate_available_register(gen->f);
+
+ spe_indent(gen->f, 4);
+ spe_comment(gen->f, -4, "init constant reg = 1.0:");
+
+ /* one = {1.0, 1.0, 1.0, 1.0} */
+ spe_load_float(gen->f, gen->one_reg, 1.0f);
+
+ spe_indent(gen->f, -4);
+ }
+
+ return gen->one_reg;
+}
+
+
+/**
+ * Return index of the address register.
+ * Used for indirect register loads/stores.
+ */
+static int
+get_address_reg(struct codegen *gen)
+{
+ if (gen->addr_reg <= 0) {
+ gen->addr_reg = spe_allocate_available_register(gen->f);
+
+ spe_indent(gen->f, 4);
+ spe_comment(gen->f, -4, "init address reg = 0:");
+
+ /* init addr = {0, 0, 0, 0} */
+ spe_zero(gen->f, gen->addr_reg);
+
+ spe_indent(gen->f, -4);
+ }
+
+ return gen->addr_reg;
+}
+
+
+/**
+ * Return index of the master execution mask.
+ * The register is allocated an initialized upon the first call.
+ *
+ * The master execution mask controls which pixels in a quad are
+ * modified, according to surrounding conditionals, loops, etc.
+ */
+static int
+get_exec_mask_reg(struct codegen *gen)
+{
+ if (gen->exec_mask_reg <= 0) {
+ gen->exec_mask_reg = spe_allocate_available_register(gen->f);
+
+ /* XXX this may not be needed */
+ spe_comment(gen->f, 0*-4, "initialize master execution mask = ~0");
+ spe_load_int(gen->f, gen->exec_mask_reg, ~0);
+ }
+
+ return gen->exec_mask_reg;
+}
+
+
+/** Return index of the conditional (if/else) execution mask register */
+static int
+get_cond_mask_reg(struct codegen *gen)
+{
+ if (gen->cond_mask_reg <= 0) {
+ gen->cond_mask_reg = spe_allocate_available_register(gen->f);
+ }
+
+ return gen->cond_mask_reg;
+}
+
+
+/** Return index of the loop execution mask register */
+static int
+get_loop_mask_reg(struct codegen *gen)
+{
+ if (gen->loop_mask_reg <= 0) {
+ gen->loop_mask_reg = spe_allocate_available_register(gen->f);
+ }
+
+ return gen->loop_mask_reg;
+}
+
+
+
+static boolean
+is_register_src(struct codegen *gen, int channel,
+ const struct tgsi_full_src_register *src)
+{
+ int swizzle = tgsi_util_get_full_src_register_extswizzle(src, channel);
+ int sign_op = tgsi_util_get_full_src_register_sign_mode(src, channel);
+
+ if (swizzle > TGSI_SWIZZLE_W || sign_op != TGSI_UTIL_SIGN_KEEP) {
+ return FALSE;
+ }
+ if (src->SrcRegister.File == TGSI_FILE_TEMPORARY ||
+ src->SrcRegister.File == TGSI_FILE_IMMEDIATE) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+
+static boolean
+is_memory_dst(struct codegen *gen, int channel,
+ const struct tgsi_full_dst_register *dst)
+{
+ if (dst->DstRegister.File == TGSI_FILE_OUTPUT) {
+ return TRUE;
+ }
+ else {
+ return FALSE;
+ }
+}
+
+
+/**
+ * Return the index of the SPU temporary containing the named TGSI
+ * source register. If the TGSI register is a TGSI_FILE_TEMPORARY we
+ * just return the corresponding SPE register. If the TGIS register
+ * is TGSI_FILE_INPUT/CONSTANT/IMMEDIATE we allocate a new SPE register
+ * and emit an SPE load instruction.
+ */
+static int
+get_src_reg(struct codegen *gen,
+ int channel,
+ const struct tgsi_full_src_register *src)
+{
+ int reg = -1;
+ int swizzle = tgsi_util_get_full_src_register_extswizzle(src, channel);
+ boolean reg_is_itemp = FALSE;
+ uint sign_op;
+
+ assert(swizzle >= TGSI_SWIZZLE_X);
+ assert(swizzle <= TGSI_EXTSWIZZLE_ONE);
+
+ if (swizzle == TGSI_EXTSWIZZLE_ONE) {
+ /* Load const one float and early out */
+ reg = get_const_one_reg(gen);
+ }
+ else if (swizzle == TGSI_EXTSWIZZLE_ZERO) {
+ /* Load const zero float and early out */
+ reg = get_itemp(gen);
+ spe_xor(gen->f, reg, reg, reg);
+ }
+ else {
+ int index = src->SrcRegister.Index;
+
+ assert(swizzle < 4);
+
+ if (src->SrcRegister.Indirect) {
+ /* XXX unfinished */
+ }
+
+ switch (src->SrcRegister.File) {
+ case TGSI_FILE_TEMPORARY:
+ reg = gen->temp_regs[index][swizzle];
+ break;
+ case TGSI_FILE_INPUT:
+ {
+ /* offset is measured in quadwords, not bytes */
+ int offset = index * 4 + swizzle;
+ reg = get_itemp(gen);
+ reg_is_itemp = TRUE;
+ /* Load: reg = memory[(machine_reg) + offset] */
+ spe_lqd(gen->f, reg, gen->inputs_reg, offset * 16);
+ }
+ break;
+ case TGSI_FILE_IMMEDIATE:
+ reg = gen->imm_regs[index][swizzle];
+ break;
+ case TGSI_FILE_CONSTANT:
+ {
+ /* offset is measured in quadwords, not bytes */
+ int offset = index * 4 + swizzle;
+ reg = get_itemp(gen);
+ reg_is_itemp = TRUE;
+ /* Load: reg = memory[(machine_reg) + offset] */
+ spe_lqd(gen->f, reg, gen->constants_reg, offset * 16);
+ }
+ break;
+ default:
+ assert(0);
+ }
+ }
+
+ /*
+ * Handle absolute value, negate or set-negative of src register.
+ */
+ sign_op = tgsi_util_get_full_src_register_sign_mode(src, channel);
+ if (sign_op != TGSI_UTIL_SIGN_KEEP) {
+ /*
+ * All sign ops are done by manipulating bit 31, the IEEE float sign bit.
+ */
+ const int bit31mask_reg = get_itemp(gen);
+ int result_reg;
+
+ if (reg_is_itemp) {
+ /* re-use 'reg' for the result */
+ result_reg = reg;
+ }
+ else {
+ /* alloc a new reg for the result */
+ result_reg = get_itemp(gen);
+ }
+
+ /* mask with bit 31 set, the rest cleared */
+ spe_load_uint(gen->f, bit31mask_reg, (1 << 31));
+
+ if (sign_op == TGSI_UTIL_SIGN_CLEAR) {
+ spe_andc(gen->f, result_reg, reg, bit31mask_reg);
+ }
+ else if (sign_op == TGSI_UTIL_SIGN_SET) {
+ spe_and(gen->f, result_reg, reg, bit31mask_reg);
+ }
+ else {
+ assert(sign_op == TGSI_UTIL_SIGN_TOGGLE);
+ spe_xor(gen->f, result_reg, reg, bit31mask_reg);
+ }
+
+ reg = result_reg;
+ }
+
+ return reg;
+}
+
+
+/**
+ * Return the index of an SPE register to use for the given TGSI register.
+ * If the TGSI register is TGSI_FILE_TEMPORARAY, the index of the
+ * corresponding SPE register is returned. If the TGSI register is
+ * TGSI_FILE_OUTPUT we allocate an intermediate temporary register.
+ * See store_dest_reg() below...
+ */
+static int
+get_dst_reg(struct codegen *gen,
+ int channel,
+ const struct tgsi_full_dst_register *dest)
+{
+ int reg = -1;
+
+ switch (dest->DstRegister.File) {
+ case TGSI_FILE_TEMPORARY:
+ if (gen->if_nesting > 0 || gen->loop_nesting > 0)
+ reg = get_itemp(gen);
+ else
+ reg = gen->temp_regs[dest->DstRegister.Index][channel];
+ break;
+ case TGSI_FILE_OUTPUT:
+ reg = get_itemp(gen);
+ break;
+ default:
+ assert(0);
+ }
+
+ return reg;
+}
+
+
+/**
+ * When a TGSI instruction is writing to an output register, this
+ * function emits the SPE store instruction to store the value_reg.
+ * \param value_reg the SPE register containing the value to store.
+ * This would have been returned by get_dst_reg().
+ */
+static void
+store_dest_reg(struct codegen *gen,
+ int value_reg, int channel,
+ const struct tgsi_full_dst_register *dest)
+{
+ /*
+ * XXX need to implement dst reg clamping/saturation
+ */
+#if 0
+ switch (inst->Instruction.Saturate) {
+ case TGSI_SAT_NONE:
+ break;
+ case TGSI_SAT_ZERO_ONE:
+ break;
+ case TGSI_SAT_MINUS_PLUS_ONE:
+ break;
+ default:
+ assert( 0 );
+ }
+#endif
+
+ switch (dest->DstRegister.File) {
+ case TGSI_FILE_TEMPORARY:
+ if (gen->if_nesting > 0 || gen->loop_nesting > 0) {
+ int d_reg = gen->temp_regs[dest->DstRegister.Index][channel];
+ int exec_reg = get_exec_mask_reg(gen);
+ /* Mix d with new value according to exec mask:
+ * d[i] = mask_reg[i] ? value_reg : d_reg
+ */
+ spe_selb(gen->f, d_reg, d_reg, value_reg, exec_reg);
+ }
+ else {
+ /* we're not inside a condition or loop: do nothing special */
+
+ }
+ break;
+ case TGSI_FILE_OUTPUT:
+ {
+ /* offset is measured in quadwords, not bytes */
+ int offset = dest->DstRegister.Index * 4 + channel;
+ if (gen->if_nesting > 0 || gen->loop_nesting > 0) {
+ int exec_reg = get_exec_mask_reg(gen);
+ int curval_reg = get_itemp(gen);
+ /* First read the current value from memory:
+ * Load: curval = memory[(machine_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 * 16);
+ }
+ else {
+ /* Store: memory[(machine_reg) + offset] = reg */
+ spe_stqd(gen->f, value_reg, gen->outputs_reg, offset * 16);
+ }
+ }
+ break;
+ default:
+ assert(0);
+ }
+}
+
+
+
+static void
+emit_prologue(struct codegen *gen)
+{
+ gen->frame_size = 1024; /* XXX temporary, should be dynamic */
+
+ spe_comment(gen->f, 0, "Function prologue:");
+
+ /* save $lr on stack # stqd $lr,16($sp) */
+ spe_stqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16);
+
+ if (gen->frame_size >= 512) {
+ /* offset is too large for ai instruction */
+ int offset_reg = spe_allocate_available_register(gen->f);
+ int sp_reg = spe_allocate_available_register(gen->f);
+ /* offset = -framesize */
+ spe_load_int(gen->f, offset_reg, -gen->frame_size);
+ /* sp = $sp */
+ spe_move(gen->f, sp_reg, SPE_REG_SP);
+ /* $sp = $sp + offset_reg */
+ spe_a(gen->f, SPE_REG_SP, SPE_REG_SP, offset_reg);
+ /* save $sp in stack frame */
+ spe_stqd(gen->f, sp_reg, SPE_REG_SP, 0);
+ /* clean up */
+ spe_release_register(gen->f, offset_reg);
+ spe_release_register(gen->f, sp_reg);
+ }
+ else {
+ /* 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)
+{
+ const int return_reg = 3;
+
+ spe_comment(gen->f, 0, "Function epilogue:");
+
+ spe_comment(gen->f, 0, "return the killed mask");
+ if (gen->kill_mask_reg > 0) {
+ /* shader called KIL, return the "alive" mask */
+ spe_move(gen->f, return_reg, gen->kill_mask_reg);
+ }
+ else {
+ /* return {0,0,0,0} */
+ spe_load_uint(gen->f, return_reg, 0);
+ }
+
+ spe_comment(gen->f, 0, "restore stack and return");
+ if (gen->frame_size >= 512) {
+ /* offset is too large for ai instruction */
+ int offset_reg = spe_allocate_available_register(gen->f);
+ /* offset = framesize */
+ spe_load_int(gen->f, offset_reg, gen->frame_size);
+ /* $sp = $sp + offset */
+ spe_a(gen->f, SPE_REG_SP, SPE_REG_SP, offset_reg);
+ /* clean up */
+ spe_release_register(gen->f, offset_reg);
+ }
+ else {
+ /* 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);
+}
+
+
+#define FOR_EACH_ENABLED_CHANNEL(inst, ch) \
+ for (ch = 0; ch < 4; ch++) \
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch))
+
+
+static boolean
+emit_ARL(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch = 0, src_reg, addr_reg;
+
+ src_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ addr_reg = get_address_reg(gen);
+
+ /* convert float to int */
+ spe_cflts(gen->f, addr_reg, src_reg, 0);
+
+ free_itemps(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_MOV(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, src_reg[4], dst_reg[4];
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ src_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ dst_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ if (is_register_src(gen, ch, &inst->FullSrcRegisters[0]) &&
+ is_memory_dst(gen, ch, &inst->FullDstRegisters[0])) {
+ /* special-case: register to memory store */
+ store_dest_reg(gen, src_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+ else {
+ spe_move(gen->f, dst_reg[ch], src_reg[ch]);
+ store_dest_reg(gen, dst_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+ }
+
+ free_itemps(gen);
+
+ return TRUE;
+}
+
+/**
+ * Emit binary operation
+ */
+static boolean
+emit_binop(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], s2_reg[4], d_reg[4];
+
+ /* Loop over Red/Green/Blue/Alpha channels, fetch src operands */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ s2_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ /* Loop over Red/Green/Blue/Alpha channels, do the op, store results */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ /* Emit actual SPE instruction: d = s1 + s2 */
+ switch (inst->Instruction.Opcode) {
+ case TGSI_OPCODE_ADD:
+ spe_fa(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ break;
+ case TGSI_OPCODE_SUB:
+ spe_fs(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ break;
+ case TGSI_OPCODE_MUL:
+ spe_fm(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ break;
+ default:
+ ;
+ }
+ }
+
+ /* Store the result (a no-op for TGSI_FILE_TEMPORARY dests) */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ /* Free any intermediate temps we allocated */
+ free_itemps(gen);
+
+ return TRUE;
+}
+
+
+/**
+ * Emit multiply add. See emit_ADD for comments.
+ */
+static boolean
+emit_MAD(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], s2_reg[4], s3_reg[4], d_reg[4];
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ s2_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ s3_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fma(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch], s3_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit linear interpolate. See emit_ADD for comments.
+ */
+static boolean
+emit_LERP(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], s2_reg[4], s3_reg[4], d_reg[4], tmp_reg[4];
+
+ /* setup/get src/dst/temp regs */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ s2_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ s3_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ tmp_reg[ch] = get_itemp(gen);
+ }
+
+ /* d = s3 + s1(s2 - s3) */
+ /* do all subtracts, then all fma, then all stores to better pipeline */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fs(gen->f, tmp_reg[ch], s2_reg[ch], s3_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fma(gen->f, d_reg[ch], tmp_reg[ch], s1_reg[ch], s3_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+
+/**
+ * Emit reciprocal or recip sqrt.
+ */
+static boolean
+emit_RCP_RSQ(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], d_reg[4], tmp_reg[4];
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ tmp_reg[ch] = get_itemp(gen);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ if (inst->Instruction.Opcode == TGSI_OPCODE_RCP) {
+ /* tmp = 1/s1 */
+ spe_frest(gen->f, tmp_reg[ch], s1_reg[ch]);
+ }
+ else {
+ /* tmp = 1/sqrt(s1) */
+ spe_frsqest(gen->f, tmp_reg[ch], s1_reg[ch]);
+ }
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ /* d = float_interp(s1, tmp) */
+ spe_fi(gen->f, d_reg[ch], s1_reg[ch], tmp_reg[ch]);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ 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, s1_reg[4], d_reg[4];
+ const int bit31mask_reg = get_itemp(gen);
+
+ /* mask with bit 31 set, the rest cleared */
+ spe_load_uint(gen->f, bit31mask_reg, (1 << 31));
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ /* d = sign bit cleared in s1 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_andc(gen->f, d_reg[ch], s1_reg[ch], bit31mask_reg);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+/**
+ * Emit 3 component dot product. See emit_ADD for comments.
+ */
+static boolean
+emit_DP3(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+ int s1x_reg, s1y_reg, s1z_reg;
+ int s2x_reg, s2y_reg, s2z_reg;
+ int t0_reg = get_itemp(gen), t1_reg = get_itemp(gen);
+
+ s1x_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s2x_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ s1y_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2y_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ s1z_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2z_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+
+ /* t0 = x0 * x1 */
+ spe_fm(gen->f, t0_reg, s1x_reg, s2x_reg);
+
+ /* t1 = y0 * y1 */
+ spe_fm(gen->f, t1_reg, s1y_reg, s2y_reg);
+
+ /* t0 = z0 * z1 + t0 */
+ spe_fma(gen->f, t0_reg, s1z_reg, s2z_reg, t0_reg);
+
+ /* t0 = t0 + t1 */
+ spe_fa(gen->f, t0_reg, t0_reg, t1_reg);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ spe_move(gen->f, d_reg, t0_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+/**
+ * Emit 4 component dot product. See emit_ADD for comments.
+ */
+static boolean
+emit_DP4(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+ int s0x_reg, s0y_reg, s0z_reg, s0w_reg;
+ int s1x_reg, s1y_reg, s1z_reg, s1w_reg;
+ int t0_reg = get_itemp(gen), t1_reg = get_itemp(gen);
+
+ s0x_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s1x_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ s0y_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s1y_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ s0z_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s1z_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ s0w_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[0]);
+ s1w_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[1]);
+
+ /* t0 = x0 * x1 */
+ spe_fm(gen->f, t0_reg, s0x_reg, s1x_reg);
+
+ /* t1 = y0 * y1 */
+ spe_fm(gen->f, t1_reg, s0y_reg, s1y_reg);
+
+ /* t0 = z0 * z1 + t0 */
+ spe_fma(gen->f, t0_reg, s0z_reg, s1z_reg, t0_reg);
+
+ /* t1 = w0 * w1 + t1 */
+ spe_fma(gen->f, t1_reg, s0w_reg, s1w_reg, t1_reg);
+
+ /* t0 = t0 + t1 */
+ spe_fa(gen->f, t0_reg, t0_reg, t1_reg);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ spe_move(gen->f, d_reg, t0_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+/**
+ * Emit homogeneous dot product. See emit_ADD for comments.
+ */
+static boolean
+emit_DPH(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ /* XXX rewrite this function to look more like DP3/DP4 */
+ int ch;
+ 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);
+
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = y0 * y1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = z0 * z1 + t */
+ spe_fma(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ s2_reg = get_src_reg(gen, CHAN_W, &inst->FullSrcRegisters[1]);
+ /* t = w1 + t */
+ spe_fa(gen->f, tmp_reg, s2_reg, tmp_reg);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, 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]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+/**
+ * Emit 3-component vector normalize.
+ */
+static boolean
+emit_NRM3(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+ int src_reg[3];
+ int t0_reg = get_itemp(gen), t1_reg = get_itemp(gen);
+
+ src_reg[0] = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ src_reg[1] = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ src_reg[2] = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+
+ /* t0 = x * x */
+ spe_fm(gen->f, t0_reg, src_reg[0], src_reg[0]);
+
+ /* t1 = y * y */
+ spe_fm(gen->f, t1_reg, src_reg[1], src_reg[1]);
+
+ /* t0 = z * z + t0 */
+ spe_fma(gen->f, t0_reg, src_reg[2], src_reg[2], t0_reg);
+
+ /* t0 = t0 + t1 */
+ spe_fa(gen->f, t0_reg, t0_reg, t1_reg);
+
+ /* t1 = 1.0 / sqrt(t0) */
+ spe_frsqest(gen->f, t1_reg, t0_reg);
+ spe_fi(gen->f, t1_reg, t0_reg, t1_reg);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ /* dst = src[ch] * t1 */
+ spe_fm(gen->f, d_reg, src_reg[ch], t1_reg);
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit cross product. See emit_ADD for comments.
+ */
+static boolean
+emit_XPD(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ int tmp_reg = get_itemp(gen);
+
+ /* t = z0 * y1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = y0 * z1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_X)) {
+ store_dest_reg(gen, tmp_reg, CHAN_X, &inst->FullDstRegisters[0]);
+ }
+
+ s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[1]);
+ /* t = x0 * z1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_Z, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ /* t = z0 * x1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_Y)) {
+ store_dest_reg(gen, tmp_reg, CHAN_Y, &inst->FullDstRegisters[0]);
+ }
+
+ s1_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[1]);
+ /* t = y0 * x1 */
+ spe_fm(gen->f, tmp_reg, s1_reg, s2_reg);
+
+ s1_reg = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[0]);
+ s2_reg = get_src_reg(gen, CHAN_Y, &inst->FullSrcRegisters[1]);
+ /* t = x0 * y1 - t */
+ spe_fms(gen->f, tmp_reg, s1_reg, s2_reg, tmp_reg);
+
+ if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << CHAN_Z)) {
+ store_dest_reg(gen, tmp_reg, CHAN_Z, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit inequality instruction.
+ * Note that the SPE fcgt instruction produces 0x0 and 0xffffffff as
+ * the result but OpenGL/TGSI needs 0.0 and 1.0 results.
+ * We can easily convert 0x0/0xffffffff to 0.0/1.0 with a bitwise AND.
+ */
+static boolean
+emit_inequality(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], s2_reg[4], d_reg[4], one_reg;
+ bool complement = FALSE;
+
+ one_reg = get_const_one_reg(gen);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ s2_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ switch (inst->Instruction.Opcode) {
+ case TGSI_OPCODE_SGT:
+ spe_fcgt(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ break;
+ case TGSI_OPCODE_SLT:
+ spe_fcgt(gen->f, d_reg[ch], s2_reg[ch], s1_reg[ch]);
+ break;
+ case TGSI_OPCODE_SGE:
+ spe_fcgt(gen->f, d_reg[ch], s2_reg[ch], s1_reg[ch]);
+ complement = TRUE;
+ break;
+ case TGSI_OPCODE_SLE:
+ spe_fcgt(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ complement = TRUE;
+ break;
+ case TGSI_OPCODE_SEQ:
+ spe_fceq(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ break;
+ case TGSI_OPCODE_SNE:
+ spe_fceq(gen->f, d_reg[ch], s1_reg[ch], s2_reg[ch]);
+ complement = TRUE;
+ break;
+ default:
+ assert(0);
+ }
+ }
+
+ /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ /* d = d & one_reg */
+ if (complement)
+ spe_andc(gen->f, d_reg[ch], one_reg, d_reg[ch]);
+ else
+ spe_and(gen->f, d_reg[ch], one_reg, d_reg[ch]);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit compare.
+ */
+static boolean
+emit_CMP(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ int s3_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[2]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ int zero_reg = get_itemp(gen);
+
+ spe_zero(gen->f, zero_reg);
+
+ /* d = (s1 < 0) ? s2 : s3 */
+ spe_fcgt(gen->f, d_reg, zero_reg, s1_reg);
+ spe_selb(gen->f, d_reg, s3_reg, s2_reg, d_reg);
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+
+ return TRUE;
+}
+
+/**
+ * Emit trunc.
+ * Convert float to signed int
+ * Convert signed int to float
+ */
+static boolean
+emit_TRUNC(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], d_reg[4];
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ /* Convert float to int */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_cflts(gen->f, d_reg[ch], s1_reg[ch], 0);
+ }
+
+ /* Convert int to float */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_csflt(gen->f, d_reg[ch], d_reg[ch], 0);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit floor.
+ * If negative int subtract one
+ * Convert float to signed int
+ * Convert signed int to float
+ */
+static boolean
+emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], d_reg[4], tmp_reg[4], zero_reg, one_reg;
+
+ zero_reg = get_itemp(gen);
+ spe_zero(gen->f, zero_reg);
+ one_reg = get_const_one_reg(gen);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ tmp_reg[ch] = get_itemp(gen);
+ }
+
+ /* If negative, subtract 1.0 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fcgt(gen->f, tmp_reg[ch], zero_reg, s1_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_selb(gen->f, tmp_reg[ch], zero_reg, one_reg, tmp_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fs(gen->f, tmp_reg[ch], s1_reg[ch], tmp_reg[ch]);
+ }
+
+ /* Convert float to int */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_cflts(gen->f, tmp_reg[ch], tmp_reg[ch], 0);
+ }
+
+ /* Convert int to float */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_csflt(gen->f, d_reg[ch], tmp_reg[ch], 0);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Compute frac = Input - FLR(Input)
+ */
+static boolean
+emit_FRC(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s1_reg[4], d_reg[4], tmp_reg[4], zero_reg, one_reg;
+
+ zero_reg = get_itemp(gen);
+ spe_zero(gen->f, zero_reg);
+ one_reg = get_const_one_reg(gen);
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ tmp_reg[ch] = get_itemp(gen);
+ }
+
+ /* If negative, subtract 1.0 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fcgt(gen->f, tmp_reg[ch], zero_reg, s1_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_selb(gen->f, tmp_reg[ch], zero_reg, one_reg, tmp_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fs(gen->f, tmp_reg[ch], s1_reg[ch], tmp_reg[ch]);
+ }
+
+ /* Convert float to int */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_cflts(gen->f, tmp_reg[ch], tmp_reg[ch], 0);
+ }
+
+ /* Convert int to float */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_csflt(gen->f, tmp_reg[ch], tmp_reg[ch], 0);
+ }
+
+ /* d = s1 - FLR(s1) */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_fs(gen->f, d_reg[ch], s1_reg[ch], tmp_reg[ch]);
+ }
+
+ /* store result */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+#if 0
+static void
+print_functions(struct cell_context *cell)
+{
+ struct cell_spu_function_info *funcs = &cell->spu_functions;
+ uint i;
+ for (i = 0; i < funcs->num; i++) {
+ printf("SPU func %u: %s at %u\n",
+ i, funcs->names[i], funcs->addrs[i]);
+ }
+}
+#endif
+
+
+static uint
+lookup_function(struct cell_context *cell, const char *funcname)
+{
+ const struct cell_spu_function_info *funcs = &cell->spu_functions;
+ uint i, addr = 0;
+ for (i = 0; i < funcs->num; i++) {
+ if (strcmp(funcs->names[i], funcname) == 0) {
+ addr = funcs->addrs[i];
+ }
+ }
+ assert(addr && "spu function not found");
+ return addr / 4; /* discard 2 least significant bits */
+}
+
+
+/**
+ * Emit code to call a SPU function.
+ * Used to implement instructions like SIN/COS/POW/TEX/etc.
+ * If scalar, only the X components of the src regs are used, and the
+ * result is replicated across the dest register's XYZW components.
+ */
+static boolean
+emit_function_call(struct codegen *gen,
+ const struct tgsi_full_instruction *inst,
+ char *funcname, uint num_args, boolean scalar)
+{
+ const uint addr = lookup_function(gen->cell, funcname);
+ char comment[100];
+ int s_regs[3];
+ int func_called = FALSE;
+ uint a, ch;
+ int retval_reg = -1;
+
+ assert(num_args <= 3);
+
+ snprintf(comment, sizeof(comment), "CALL %s:", funcname);
+ spe_comment(gen->f, -4, comment);
+
+ if (scalar) {
+ for (a = 0; a < num_args; a++) {
+ s_regs[a] = get_src_reg(gen, CHAN_X, &inst->FullSrcRegisters[a]);
+ }
+ /* we'll call the function, put the return value in this register,
+ * then replicate it across all write-enabled components in d_reg.
+ */
+ retval_reg = spe_allocate_available_register(gen->f);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int d_reg;
+ ubyte usedRegs[SPE_NUM_REGS];
+ uint i, numUsed;
+
+ if (!scalar) {
+ 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]);
+
+ if (!scalar || !func_called) {
+ /* for a scalar function, we'll really only call the function once */
+
+ numUsed = spe_get_registers_used(gen->f, usedRegs);
+ assert(numUsed < gen->frame_size / 16 - 2);
+
+ /* 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);
+ }
+
+ /* 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);
+
+ /* save function's return value */
+ if (scalar)
+ spe_move(gen->f, retval_reg, 3);
+ else
+ 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 && reg != retval_reg) {
+ int offset = 2 + i;
+ spe_lqd(gen->f, reg, SPE_REG_SP, 16 * offset);
+ }
+ }
+
+ func_called = TRUE;
+ }
+
+ if (scalar) {
+ spe_move(gen->f, d_reg, retval_reg);
+ }
+
+ store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+
+ if (scalar) {
+ spe_release_register(gen->f, retval_reg);
+ }
+
+ return TRUE;
+}
+
+
+static boolean
+emit_TEX(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const uint target = inst->InstructionExtTexture.Texture;
+ const uint unit = inst->FullSrcRegisters[1].SrcRegister.Index;
+ uint addr;
+ int ch;
+ int coord_regs[4], d_regs[4];
+
+ switch (target) {
+ case TGSI_TEXTURE_1D:
+ case TGSI_TEXTURE_2D:
+ addr = lookup_function(gen->cell, "spu_tex_2d");
+ break;
+ case TGSI_TEXTURE_3D:
+ addr = lookup_function(gen->cell, "spu_tex_3d");
+ break;
+ case TGSI_TEXTURE_CUBE:
+ addr = lookup_function(gen->cell, "spu_tex_cube");
+ break;
+ default:
+ ASSERT(0 && "unsupported texture target");
+ return FALSE;
+ }
+
+ assert(inst->FullSrcRegisters[1].SrcRegister.File == TGSI_FILE_SAMPLER);
+
+ spe_comment(gen->f, -4, "CALL tex:");
+
+ /* get src/dst reg info */
+ for (ch = 0; ch < 4; ch++) {
+ coord_regs[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ d_regs[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ }
+
+ {
+ ubyte usedRegs[SPE_NUM_REGS];
+ uint i, numUsed;
+
+ numUsed = spe_get_registers_used(gen->f, usedRegs);
+ assert(numUsed < gen->frame_size / 16 - 2);
+
+ /* 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);
+ }
+
+ /* setup function arguments (XXX depends on target) */
+ for (i = 0; i < 4; i++) {
+ spe_move(gen->f, 3 + i, coord_regs[i]);
+ }
+ spe_load_uint(gen->f, 7, unit); /* sampler unit */
+
+ /* branch to function, save return addr */
+ spe_brasl(gen->f, SPE_REG_RA, addr);
+
+ /* save function's return values (four pixel's colors) */
+ for (i = 0; i < 4; i++) {
+ spe_move(gen->f, d_regs[i], 3 + i);
+ }
+
+ /* restore registers from stack */
+ for (i = 0; i < numUsed; i++) {
+ uint reg = usedRegs[i];
+ if (reg != d_regs[0] &&
+ reg != d_regs[1] &&
+ reg != d_regs[2] &&
+ reg != d_regs[3]) {
+ int offset = 2 + i;
+ spe_lqd(gen->f, reg, SPE_REG_SP, 16 * offset);
+ }
+ }
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_regs[ch], ch, &inst->FullDstRegisters[0]);
+ free_itemps(gen);
+ }
+
+ return TRUE;
+}
+
+
+/**
+ * KILL if any of src reg values are less than zero.
+ */
+static boolean
+emit_KIL(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch;
+ int s_regs[4], kil_reg = -1, cmp_reg, zero_reg;
+
+ spe_comment(gen->f, -4, "CALL kil:");
+
+ /* zero = {0,0,0,0} */
+ zero_reg = get_itemp(gen);
+ spe_zero(gen->f, zero_reg);
+
+ cmp_reg = get_itemp(gen);
+
+ /* get src regs */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s_regs[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ }
+
+ /* test if any src regs are < 0 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ if (kil_reg >= 0) {
+ /* cmp = 0 > src ? : ~0 : 0 */
+ spe_fcgt(gen->f, cmp_reg, zero_reg, s_regs[ch]);
+ /* kil = kil | cmp */
+ spe_or(gen->f, kil_reg, kil_reg, cmp_reg);
+ }
+ else {
+ kil_reg = get_itemp(gen);
+ /* kil = 0 > src ? : ~0 : 0 */
+ spe_fcgt(gen->f, kil_reg, zero_reg, s_regs[ch]);
+ }
+ }
+
+ if (gen->if_nesting || gen->loop_nesting) {
+ /* may have been a conditional kil */
+ spe_and(gen->f, kil_reg, kil_reg, gen->exec_mask_reg);
+ }
+
+ /* allocate the kill mask reg if needed */
+ if (gen->kill_mask_reg <= 0) {
+ gen->kill_mask_reg = spe_allocate_available_register(gen->f);
+ spe_move(gen->f, gen->kill_mask_reg, kil_reg);
+ }
+ else {
+ spe_or(gen->f, gen->kill_mask_reg, gen->kill_mask_reg, kil_reg);
+ }
+
+ free_itemps(gen);
+
+ return TRUE;
+}
+
+
+
+/**
+ * Emit min or max.
+ */
+static boolean
+emit_MIN_MAX(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int ch, s0_reg[4], s1_reg[4], d_reg[4], tmp_reg[4];
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ s0_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ s1_reg[ch] = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+ d_reg[ch] = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+ tmp_reg[ch] = get_itemp(gen);
+ }
+
+ /* d = (s0 > s1) ? s0 : s1 */
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ if (inst->Instruction.Opcode == TGSI_OPCODE_MAX)
+ spe_fcgt(gen->f, tmp_reg[ch], s0_reg[ch], s1_reg[ch]);
+ else
+ spe_fcgt(gen->f, tmp_reg[ch], s1_reg[ch], s0_reg[ch]);
+ }
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ spe_selb(gen->f, d_reg[ch], s1_reg[ch], s0_reg[ch], tmp_reg[ch]);
+ }
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ store_dest_reg(gen, d_reg[ch], ch, &inst->FullDstRegisters[0]);
+ }
+
+ free_itemps(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit code to update the execution mask.
+ * This needs to be done whenever the execution status of a conditional
+ * or loop is changed.
+ */
+static void
+emit_update_exec_mask(struct codegen *gen)
+{
+ const int exec_reg = get_exec_mask_reg(gen);
+ const int cond_reg = gen->cond_mask_reg;
+ const int loop_reg = gen->loop_mask_reg;
+
+ spe_comment(gen->f, 0, "Update master execution mask");
+
+ if (gen->if_nesting > 0 && gen->loop_nesting > 0) {
+ /* exec_mask = cond_mask & loop_mask */
+ assert(cond_reg > 0);
+ assert(loop_reg > 0);
+ spe_and(gen->f, exec_reg, cond_reg, loop_reg);
+ }
+ else if (gen->if_nesting > 0) {
+ assert(cond_reg > 0);
+ spe_move(gen->f, exec_reg, cond_reg);
+ }
+ else if (gen->loop_nesting > 0) {
+ assert(loop_reg > 0);
+ spe_move(gen->f, exec_reg, loop_reg);
+ }
+ else {
+ spe_load_int(gen->f, exec_reg, ~0x0);
+ }
+}
+
+
+static boolean
+emit_IF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int channel = 0;
+ int cond_reg;
+
+ cond_reg = get_cond_mask_reg(gen);
+
+ /* XXX push cond exec mask */
+
+ spe_comment(gen->f, 0, "init conditional exec mask = ~0:");
+ spe_load_int(gen->f, cond_reg, ~0);
+
+ /* update conditional execution mask with the predicate register */
+ int tmp_reg = get_itemp(gen);
+ int s1_reg = get_src_reg(gen, channel, &inst->FullSrcRegisters[0]);
+
+ /* tmp = (s1_reg == 0) */
+ spe_ceqi(gen->f, tmp_reg, s1_reg, 0);
+ /* tmp = !tmp */
+ spe_complement(gen->f, tmp_reg, tmp_reg);
+ /* cond_mask = cond_mask & tmp */
+ spe_and(gen->f, cond_reg, cond_reg, tmp_reg);
+
+ gen->if_nesting++;
+
+ /* update the master execution mask */
+ emit_update_exec_mask(gen);
+
+ free_itemps(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_ELSE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int cond_reg = get_cond_mask_reg(gen);
+
+ spe_comment(gen->f, 0, "cond exec mask = !cond exec mask");
+ spe_complement(gen->f, cond_reg, cond_reg);
+ emit_update_exec_mask(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_ENDIF(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ /* XXX todo: pop cond exec mask */
+
+ gen->if_nesting--;
+
+ emit_update_exec_mask(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_BGNLOOP(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ int exec_reg, loop_reg;
+
+ exec_reg = get_exec_mask_reg(gen);
+ loop_reg = get_loop_mask_reg(gen);
+
+ /* XXX push loop_exec mask */
+
+ spe_comment(gen->f, 0*-4, "initialize loop exec mask = ~0");
+ spe_load_int(gen->f, loop_reg, ~0x0);
+
+ gen->loop_nesting++;
+ gen->loop_start = spe_code_size(gen->f); /* in bytes */
+
+ return TRUE;
+}
+
+
+static boolean
+emit_ENDLOOP(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int loop_reg = get_loop_mask_reg(gen);
+ const int tmp_reg = get_itemp(gen);
+ int offset;
+
+ /* tmp_reg = exec[0] | exec[1] | exec[2] | exec[3] */
+ spe_orx(gen->f, tmp_reg, loop_reg);
+
+ offset = gen->loop_start - spe_code_size(gen->f); /* in bytes */
+
+ /* branch back to top of loop if tmp_reg != 0 */
+ spe_brnz(gen->f, tmp_reg, offset / 4);
+
+ /* XXX pop loop_exec mask */
+
+ gen->loop_nesting--;
+
+ emit_update_exec_mask(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_BRK(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ const int exec_reg = get_exec_mask_reg(gen);
+ const int loop_reg = get_loop_mask_reg(gen);
+
+ assert(gen->loop_nesting > 0);
+
+ spe_comment(gen->f, 0, "loop exec mask &= ~master exec mask");
+ spe_andc(gen->f, loop_reg, loop_reg, exec_reg);
+
+ emit_update_exec_mask(gen);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_CONT(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+ assert(gen->loop_nesting > 0);
+
+ return TRUE;
+}
+
+
+static boolean
+emit_DDX_DDY(struct codegen *gen, const struct tgsi_full_instruction *inst,
+ boolean ddx)
+{
+ int ch;
+
+ FOR_EACH_ENABLED_CHANNEL(inst, ch) {
+ int s_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+ int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+ int t1_reg = get_itemp(gen);
+ int t2_reg = get_itemp(gen);
+
+ spe_splat_word(gen->f, t1_reg, s_reg, 0); /* upper-left pixel */
+ if (ddx) {
+ spe_splat_word(gen->f, t2_reg, s_reg, 1); /* upper-right pixel */
+ }
+ else {
+ spe_splat_word(gen->f, t2_reg, s_reg, 2); /* lower-left pixel */
+ }
+ spe_fs(gen->f, d_reg, t2_reg, t1_reg);
+
+ free_itemps(gen);
+ }
+
+ return TRUE;
+}
+
+
+
+
+/**
+ * Emit END instruction.
+ * We just return from the shader function at this point.
+ *
+ * Note that there may be more code after this that would be
+ * called by TGSI_OPCODE_CALL.
+ */
+static boolean
+emit_END(struct codegen *gen)
+{
+ emit_epilogue(gen);
+ return TRUE;
+}
+
+
+/**
+ * Emit code for the given instruction. Just a big switch stmt.
+ */
+static boolean
+emit_instruction(struct codegen *gen,
+ const struct tgsi_full_instruction *inst)
+{
+ switch (inst->Instruction.Opcode) {
+ case TGSI_OPCODE_ARL:
+ return emit_ARL(gen, inst);
+ case TGSI_OPCODE_MOV:
+ case TGSI_OPCODE_SWZ:
+ return emit_MOV(gen, inst);
+ case TGSI_OPCODE_ADD:
+ case TGSI_OPCODE_SUB:
+ case TGSI_OPCODE_MUL:
+ return emit_binop(gen, inst);
+ case TGSI_OPCODE_MAD:
+ return emit_MAD(gen, inst);
+ case TGSI_OPCODE_LERP:
+ return emit_LERP(gen, inst);
+ case TGSI_OPCODE_DP3:
+ return emit_DP3(gen, inst);
+ case TGSI_OPCODE_DP4:
+ return emit_DP4(gen, inst);
+ case TGSI_OPCODE_DPH:
+ return emit_DPH(gen, inst);
+ case TGSI_OPCODE_NRM:
+ return emit_NRM3(gen, inst);
+ case TGSI_OPCODE_XPD:
+ return emit_XPD(gen, inst);
+ case TGSI_OPCODE_RCP:
+ case TGSI_OPCODE_RSQ:
+ return emit_RCP_RSQ(gen, inst);
+ case TGSI_OPCODE_ABS:
+ return emit_ABS(gen, inst);
+ case TGSI_OPCODE_SGT:
+ case TGSI_OPCODE_SLT:
+ case TGSI_OPCODE_SGE:
+ case TGSI_OPCODE_SLE:
+ case TGSI_OPCODE_SEQ:
+ case TGSI_OPCODE_SNE:
+ return emit_inequality(gen, inst);
+ case TGSI_OPCODE_CMP:
+ return emit_CMP(gen, inst);
+ case TGSI_OPCODE_MIN:
+ case TGSI_OPCODE_MAX:
+ return emit_MIN_MAX(gen, inst);
+ case TGSI_OPCODE_TRUNC:
+ return emit_TRUNC(gen, inst);
+ case TGSI_OPCODE_FLR:
+ return emit_FLR(gen, inst);
+ case TGSI_OPCODE_FRC:
+ return emit_FRC(gen, inst);
+ case TGSI_OPCODE_END:
+ return emit_END(gen);
+
+ case TGSI_OPCODE_COS:
+ return emit_function_call(gen, inst, "spu_cos", 1, TRUE);
+ case TGSI_OPCODE_SIN:
+ return emit_function_call(gen, inst, "spu_sin", 1, TRUE);
+ case TGSI_OPCODE_POW:
+ return emit_function_call(gen, inst, "spu_pow", 2, TRUE);
+ case TGSI_OPCODE_EXPBASE2:
+ return emit_function_call(gen, inst, "spu_exp2", 1, TRUE);
+ case TGSI_OPCODE_LOGBASE2:
+ return emit_function_call(gen, inst, "spu_log2", 1, TRUE);
+ case TGSI_OPCODE_TEX:
+ /* fall-through for now */
+ case TGSI_OPCODE_TXD:
+ /* fall-through for now */
+ case TGSI_OPCODE_TXB:
+ /* fall-through for now */
+ case TGSI_OPCODE_TXL:
+ /* fall-through for now */
+ case TGSI_OPCODE_TXP:
+ return emit_TEX(gen, inst);
+ case TGSI_OPCODE_KIL:
+ return emit_KIL(gen, inst);
+
+ case TGSI_OPCODE_IF:
+ return emit_IF(gen, inst);
+ case TGSI_OPCODE_ELSE:
+ return emit_ELSE(gen, inst);
+ case TGSI_OPCODE_ENDIF:
+ return emit_ENDIF(gen, inst);
+
+ case TGSI_OPCODE_BGNLOOP2:
+ return emit_BGNLOOP(gen, inst);
+ case TGSI_OPCODE_ENDLOOP2:
+ return emit_ENDLOOP(gen, inst);
+ case TGSI_OPCODE_BRK:
+ return emit_BRK(gen, inst);
+ case TGSI_OPCODE_CONT:
+ return emit_CONT(gen, inst);
+
+ case TGSI_OPCODE_DDX:
+ return emit_DDX_DDY(gen, inst, TRUE);
+ case TGSI_OPCODE_DDY:
+ return emit_DDX_DDY(gen, inst, FALSE);
+
+ /* XXX lots more cases to do... */
+
+ default:
+ fprintf(stderr, "Cell: unimplemented TGSI instruction %d!\n",
+ inst->Instruction.Opcode);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+
+/**
+ * Emit code for a TGSI immediate value (vector of four floats).
+ * This involves register allocation and initialization.
+ * XXX the initialization should be done by a "prepare" stage, not
+ * per quad execution!
+ */
+static boolean
+emit_immediate(struct codegen *gen, const struct tgsi_full_immediate *immed)
+{
+ int ch;
+
+ assert(gen->num_imm < MAX_TEMPS);
+
+ for (ch = 0; ch < 4; ch++) {
+ float val = immed->u.ImmediateFloat32[ch].Float;
+
+ if (ch > 0 && val == immed->u.ImmediateFloat32[ch - 1].Float) {
+ /* re-use previous register */
+ gen->imm_regs[gen->num_imm][ch] = gen->imm_regs[gen->num_imm][ch - 1];
+ }
+ else {
+ char str[100];
+ int reg = spe_allocate_available_register(gen->f);
+
+ if (reg < 0)
+ return FALSE;
+
+ sprintf(str, "init $%d = %f", reg, val);
+ spe_comment(gen->f, 0, str);
+
+ /* update immediate map */
+ gen->imm_regs[gen->num_imm][ch] = reg;
+
+ /* emit initializer instruction */
+ spe_load_float(gen->f, reg, val);
+ }
+ }
+
+ gen->num_imm++;
+
+ return TRUE;
+}
+
+
+
+/**
+ * Emit "code" for a TGSI declaration.
+ * We only care about TGSI TEMPORARY register declarations at this time.
+ * For each TGSI TEMPORARY we allocate four SPE registers.
+ */
+static boolean
+emit_declaration(struct cell_context *cell,
+ struct codegen *gen, const struct tgsi_full_declaration *decl)
+{
+ int i, ch;
+
+ switch (decl->Declaration.File) {
+ case TGSI_FILE_TEMPORARY:
+ for (i = decl->DeclarationRange.First;
+ i <= decl->DeclarationRange.Last;
+ i++) {
+ assert(i < MAX_TEMPS);
+ for (ch = 0; ch < 4; ch++) {
+ gen->temp_regs[i][ch] = spe_allocate_available_register(gen->f);
+ if (gen->temp_regs[i][ch] < 0)
+ return FALSE; /* out of regs */
+ }
+
+ /* XXX if we run out of SPE registers, we need to spill
+ * to SPU memory. someday...
+ */
+
+ {
+ char buf[100];
+ sprintf(buf, "TGSI temp[%d] maps to SPU regs [$%d $%d $%d $%d]", i,
+ gen->temp_regs[i][0], gen->temp_regs[i][1],
+ gen->temp_regs[i][2], gen->temp_regs[i][3]);
+ spe_comment(gen->f, 0, buf);
+ }
+ }
+ break;
+ default:
+ ; /* ignore */
+ }
+
+ return TRUE;
+}
+
+
+
+/**
+ * Translate TGSI shader code to SPE instructions. This is done when
+ * the state tracker gives us a new shader (via pipe->create_fs_state()).
+ *
+ * \param cell the rendering context (in)
+ * \param tokens the TGSI shader (in)
+ * \param f the generated function (out)
+ */
+boolean
+cell_gen_fragment_program(struct cell_context *cell,
+ const struct tgsi_token *tokens,
+ struct spe_function *f)
+{
+ struct tgsi_parse_context parse;
+ struct codegen gen;
+ uint ic = 0;
+
+ memset(&gen, 0, sizeof(gen));
+ gen.cell = cell;
+ gen.f = f;
+
+ /* For SPE function calls: reg $3 = first param, $4 = second param, etc. */
+ gen.inputs_reg = 3; /* pointer to inputs array */
+ gen.outputs_reg = 4; /* pointer to outputs array */
+ gen.constants_reg = 5; /* pointer to constants array */
+
+ spe_init_func(f, SPU_MAX_FRAGMENT_PROGRAM_INSTS * SPE_INST_SIZE);
+ spe_allocate_register(f, gen.inputs_reg);
+ spe_allocate_register(f, gen.outputs_reg);
+ spe_allocate_register(f, gen.constants_reg);
+
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ spe_print_code(f, TRUE);
+ spe_indent(f, 2*8);
+ printf("Begin %s\n", __FUNCTION__);
+ tgsi_dump(tokens, 0);
+ }
+
+ 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 (f->print) {
+ _debug_printf(" # ");
+ tgsi_dump_immediate(&parse.FullToken.FullImmediate);
+ }
+ if (!emit_immediate(&gen, &parse.FullToken.FullImmediate))
+ gen.error = TRUE;
+ break;
+
+ case TGSI_TOKEN_TYPE_DECLARATION:
+ if (f->print) {
+ _debug_printf(" # ");
+ tgsi_dump_declaration(&parse.FullToken.FullDeclaration);
+ }
+ if (!emit_declaration(cell, &gen, &parse.FullToken.FullDeclaration))
+ gen.error = TRUE;
+ break;
+
+ case TGSI_TOKEN_TYPE_INSTRUCTION:
+ if (f->print) {
+ _debug_printf(" # ");
+ ic++;
+ tgsi_dump_instruction(&parse.FullToken.FullInstruction, ic);
+ }
+ if (!emit_instruction(&gen, &parse.FullToken.FullInstruction))
+ gen.error = TRUE;
+ break;
+
+ default:
+ assert(0);
+ }
+ }
+
+ if (gen.error) {
+ /* terminate the SPE code */
+ return emit_END(&gen);
+ }
+
+ if (cell->debug_flags & CELL_DEBUG_ASM) {
+ printf("cell_gen_fragment_program nr instructions: %d\n", f->num_inst);
+ printf("End %s\n", __FUNCTION__);
+ }
+
+ tgsi_parse_free( &parse );
+
+ return !gen.error;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 08:15:36 +0000