r300g: copy the compiler from r300c

What a beast.

r300g doesn't depend on files from r300c anymore, so r300c is now left
to its own fate. BTW 'make test' can be invoked from the gallium/r300
directory to run some compiler unit tests.

1 files changed, 80 insertions, 0 deletions

diff --git a/src/gallium/drivers/r300/compiler/memory_pool.h b/src/gallium/drivers/r300/compiler/memory_pool.h
new file mode 100644
index 00000000000..42344d0e3ba
--- /dev/null
+++ b/src/gallium/drivers/r300/compiler/memory_pool.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2009 Nicolai Hähnle <[email protected]>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#ifndef MEMORY_POOL_H
+#define MEMORY_POOL_H
+
+struct memory_block;
+
+/**
+ * Provides a pool of memory that can quickly be allocated from, at the
+ * cost of being unable to explicitly free one of the allocated blocks.
+ * Instead, the entire pool can be freed at once.
+ *
+ * The idea is to allow one to quickly allocate a flexible amount of
+ * memory during operations like shader compilation while avoiding
+ * reference counting headaches.
+ */
+struct memory_pool {
+	unsigned char * head;
+	unsigned char * end;
+	unsigned int total_allocated;
+	struct memory_block * blocks;
+};
+
+
+void memory_pool_init(struct memory_pool * pool);
+void memory_pool_destroy(struct memory_pool * pool);
+void * memory_pool_malloc(struct memory_pool * pool, unsigned int bytes);
+
+
+/**
+ * Generic helper for growing an array that has separate size/count
+ * and reserved counters to accomodate up to num new element.
+ *
+ *  type * Array;
+ *  unsigned int Size;
+ *  unsigned int Reserved;
+ *
+ * memory_pool_array_reserve(pool, type, Array, Size, Reserved, k);
+ * assert(Size + k < Reserved);
+ *
+ * \note Size is not changed by this macro.
+ *
+ * \warning Array, Size, Reserved have to be lvalues and may be evaluated
+ * several times.
+ */
+#define memory_pool_array_reserve(pool, type, array, size, reserved, num) do { \
+	unsigned int _num = (num); \
+	if ((size) + _num > (reserved)) { \
+		unsigned int newreserve = (reserved) * 2; \
+		type * newarray; \
+		if (newreserve < _num) \
+			newreserve = 4 * _num; /* arbitrary heuristic */ \
+		newarray = memory_pool_malloc((pool), newreserve * sizeof(type)); \
+		memcpy(newarray, (array), (size) * sizeof(type)); \
+		(array) = newarray; \
+		(reserved) = newreserve; \
+	} \
+} while(0)
+
+#endif /* MEMORY_POOL_H */