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authorBen Skeggs <skeggsb@gmail.com>2008-03-13 13:39:05 +1100
committerBen Skeggs <skeggsb@gmail.com>2008-03-13 13:39:05 +1100
commit03ec66375889f049b09f39ba98515aa35ac48164 (patch)
treee149d8defb52b1252af982b459902ee0800b17cd /src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
parentbd4fe0e87c1b979973d9a76aa48de5fbbb8d52b7 (diff)
parent2366bb1baf2e9ae5b6ecf19f66ae9e0a4b0d2f36 (diff)
Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1
Diffstat (limited to 'src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c')
-rw-r--r--src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
index 95a2d6fcbb..a996218ce7 100644
--- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
+++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c
@@ -306,6 +306,11 @@ void spe_init_func(struct spe_function *p, unsigned code_size)
{
p->store = align_malloc(code_size, 16);
p->csr = p->store;
+
+ /* Conservatively treat R0 - R2 and R80 - R127 as non-volatile.
+ */
+ p->regs[0] = ~7;
+ p->regs[1] = (1U << (80 - 64)) - 1;
}
@@ -317,6 +322,48 @@ void spe_release_func(struct spe_function *p)
}
+int spe_allocate_available_register(struct spe_function *p)
+{
+ unsigned i;
+ for (i = 0; i < 128; i++) {
+ const uint64_t mask = (1ULL << (i % 128));
+ const unsigned idx = i / 128;
+
+ if ((p->regs[idx] & mask) != 0) {
+ p->regs[idx] &= ~mask;
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+
+int spe_allocate_register(struct spe_function *p, int reg)
+{
+ const unsigned idx = reg / 128;
+ const unsigned bit = reg % 128;
+
+ assert((p->regs[idx] & (1ULL << bit)) != 0);
+
+ p->regs[idx] &= ~(1ULL << bit);
+ return reg;
+}
+
+
+void spe_release_register(struct spe_function *p, int reg)
+{
+ const unsigned idx = reg / 128;
+ const unsigned bit = reg % 128;
+
+ assert((p->regs[idx] & (1ULL << bit)) == 0);
+
+ p->regs[idx] |= (1ULL << bit);
+}
+
+
+
+
void spe_bi(struct spe_function *p, unsigned rA, int d, int e)
{
emit_RI7(p, 0x1a8, 0, rA, (d << 5) | (e << 4));