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authorBrian Paul <brian.paul@tungstengraphics.com>2008-10-29 16:56:28 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-10-29 16:56:28 -0600
commitf952aac1da432336f330122cacc30a87f52b4101 (patch)
treec750c7bee0f71516f1b9774b4840773c71c400f2 /src/gallium/auxiliary/rtasm
parent725ba94ce5701aa8690c7ab2ea792dda86cbbe7a (diff)
gallium: grow SPE instruction buffer as needed
Diffstat (limited to 'src/gallium/auxiliary/rtasm')
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c57
1 files changed, 41 insertions, 16 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
index dea1aed032..f8568f690b 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
@@ -185,6 +185,34 @@ reg_name(int reg)
}
+static void
+emit_instruction(struct spe_function *p, uint32_t inst_bits)
+{
+ if (!p->store)
+ return; /* out of memory, drop the instruction */
+
+ if (p->num_inst == p->max_inst) {
+ /* allocate larger buffer */
+ uint32_t *newbuf;
+ p->max_inst *= 2; /* 2x larger */
+ newbuf = align_malloc(p->max_inst * SPE_INST_SIZE, 16);
+ if (newbuf) {
+ memcpy(newbuf, p->store, p->num_inst * SPE_INST_SIZE);
+ }
+ align_free(p->store);
+ p->store = newbuf;
+ if (!p->store) {
+ /* out of memory */
+ p->num_inst = 0;
+ return;
+ }
+ }
+
+ p->store[p->num_inst++] = inst_bits;
+}
+
+
+
static void emit_RR(struct spe_function *p, unsigned op, unsigned rT,
unsigned rA, unsigned rB, const char *name)
{
@@ -193,8 +221,7 @@ static void emit_RR(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.rB = rB;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, %s\n",
@@ -212,8 +239,7 @@ static void emit_RRR(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.rB = rB;
inst.inst.rA = rA;
inst.inst.rC = rC;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, %s, %s\n", rem_prefix(name), reg_name(rT),
@@ -230,8 +256,7 @@ static void emit_RI7(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.i7 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, 0x%x\n",
@@ -249,8 +274,7 @@ static void emit_RI8(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.i8 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, 0x%x\n",
@@ -268,8 +292,7 @@ static void emit_RI10(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.i10 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, 0x%x\n",
@@ -295,8 +318,7 @@ static void emit_RI16(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.op = op;
inst.inst.i16 = imm;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, 0x%x\n", rem_prefix(name), reg_name(rT), imm);
@@ -311,8 +333,7 @@ static void emit_RI18(struct spe_function *p, unsigned op, unsigned rT,
inst.inst.op = op;
inst.inst.i18 = imm;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, 0x%x\n", rem_prefix(name), reg_name(rT), imm);
@@ -394,15 +415,19 @@ void _name (struct spe_function *p, int imm) \
/**
* Initialize an spe_function.
- * \param code_size size of instruction buffer to allocate, in bytes.
+ * \param code_size initial size of instruction buffer to allocate, in bytes.
+ * If zero, use a default.
*/
void spe_init_func(struct spe_function *p, unsigned code_size)
{
unsigned int i;
- p->store = align_malloc(code_size, 16);
+ if (!code_size)
+ code_size = 64;
+
p->num_inst = 0;
p->max_inst = code_size / SPE_INST_SIZE;
+ p->store = align_malloc(code_size, 16);
p->set_count = 0;
memset(p->regs, 0, SPE_NUM_REGS * sizeof(p->regs[0]));