From 2e96c010733c720159cfb2cdbcdb62443d64d173 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Nicolai=20H=C3=A4hnle?= <nicolai.haehnle@amd.com>
Date: Tue, 22 May 2018 13:29:27 +0200
Subject: [PATCH] amd/common: extract ac_parse_shader_binary_config
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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
---
 src/amd/common/ac_binary.c | 77 +++++++++++++++++++++-----------------
 src/amd/common/ac_binary.h |  4 ++
 2 files changed, 47 insertions(+), 34 deletions(-)

diff --git a/src/amd/common/ac_binary.c b/src/amd/common/ac_binary.c
index 8f4755ebe16..ee8d3836177 100644
--- a/src/amd/common/ac_binary.c
+++ b/src/amd/common/ac_binary.c
@@ -206,43 +206,16 @@ const unsigned char *ac_shader_binary_config_start(
 	return binary->config;
 }
 
-
-static const char *scratch_rsrc_dword0_symbol =
-	"SCRATCH_RSRC_DWORD0";
-
-static const char *scratch_rsrc_dword1_symbol =
-	"SCRATCH_RSRC_DWORD1";
-
-void ac_shader_binary_read_config(struct ac_shader_binary *binary,
-				  struct ac_shader_config *conf,
-				  unsigned symbol_offset,
-				  bool supports_spill)
+/* Parse configuration data in .AMDGPU.config section format. */
+void ac_parse_shader_binary_config(const char *data, size_t nbytes,
+				   bool really_needs_scratch,
+				   struct ac_shader_config *conf)
 {
-	unsigned i;
-	const unsigned char *config =
-		ac_shader_binary_config_start(binary, symbol_offset);
-	bool really_needs_scratch = false;
 	uint32_t wavesize = 0;
-	/* LLVM adds SGPR spills to the scratch size.
-	 * Find out if we really need the scratch buffer.
-	 */
-	if (supports_spill) {
-		really_needs_scratch = true;
-	} else {
-		for (i = 0; i < binary->reloc_count; i++) {
-			const struct ac_shader_reloc *reloc = &binary->relocs[i];
 
-			if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name) ||
-			    !strcmp(scratch_rsrc_dword1_symbol, reloc->name)) {
-				really_needs_scratch = true;
-				break;
-			}
-		}
-	}
-
-	for (i = 0; i < binary->config_size_per_symbol; i+= 8) {
-		unsigned reg = util_le32_to_cpu(*(uint32_t*)(config + i));
-		unsigned value = util_le32_to_cpu(*(uint32_t*)(config + i + 4));
+	for (size_t i = 0; i < nbytes; i += 8) {
+		unsigned reg = util_le32_to_cpu(*(uint32_t*)(data + i));
+		unsigned value = util_le32_to_cpu(*(uint32_t*)(data + i + 4));
 		switch (reg) {
 		case R_00B028_SPI_SHADER_PGM_RSRC1_PS:
 		case R_00B128_SPI_SHADER_PGM_RSRC1_VS:
@@ -299,6 +272,42 @@ void ac_shader_binary_read_config(struct ac_shader_binary *binary,
 	}
 }
 
+static const char *scratch_rsrc_dword0_symbol =
+	"SCRATCH_RSRC_DWORD0";
+
+static const char *scratch_rsrc_dword1_symbol =
+	"SCRATCH_RSRC_DWORD1";
+
+void ac_shader_binary_read_config(struct ac_shader_binary *binary,
+				  struct ac_shader_config *conf,
+				  unsigned symbol_offset,
+				  bool supports_spill)
+{
+	unsigned i;
+	const char *config =
+		(const char *)ac_shader_binary_config_start(binary, symbol_offset);
+	bool really_needs_scratch = false;
+	/* LLVM adds SGPR spills to the scratch size.
+	 * Find out if we really need the scratch buffer.
+	 */
+	if (supports_spill) {
+		really_needs_scratch = true;
+	} else {
+		for (i = 0; i < binary->reloc_count; i++) {
+			const struct ac_shader_reloc *reloc = &binary->relocs[i];
+
+			if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name) ||
+			    !strcmp(scratch_rsrc_dword1_symbol, reloc->name)) {
+				really_needs_scratch = true;
+				break;
+			}
+		}
+	}
+
+	ac_parse_shader_binary_config(config, binary->config_size_per_symbol,
+				      really_needs_scratch, conf);
+}
+
 void ac_shader_binary_clean(struct ac_shader_binary *b)
 {
 	if (!b)
diff --git a/src/amd/common/ac_binary.h b/src/amd/common/ac_binary.h
index 735e3932055..febc4da7fed 100644
--- a/src/amd/common/ac_binary.h
+++ b/src/amd/common/ac_binary.h
@@ -24,6 +24,7 @@
 #ifndef AC_BINARY_H
 #define AC_BINARY_H
 
+#include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
 
@@ -96,6 +97,9 @@ const unsigned char *ac_shader_binary_config_start(
 	const struct ac_shader_binary *binary,
 	uint64_t symbol_offset);
 
+void ac_parse_shader_binary_config(const char *data, size_t nbytes,
+				   bool really_needs_scratch,
+				   struct ac_shader_config *conf);
 void ac_shader_binary_read_config(struct ac_shader_binary *binary,
 				  struct ac_shader_config *conf,
 				  unsigned symbol_offset,
-- 
2.30.2