[PATCH i-g-t v2 47/66] lib/gpgpu_shader: Add set/clear exception register (cr0.1) helpers

[Christoph Manszewski <christoph.manszewski@intel.com>]

From: Andrzej Hajda <andrzej.hajda@intel.com>

To allow enabling and handling exceptions from shader and siplet
proper helpers should be provided.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
---
 lib/gpgpu_shader.c          | 28 ++++++++++++++++++++++++++++
 lib/gpgpu_shader.h          |  2 ++
 lib/iga64_generated_codes.c | 32 +++++++++++++++++++++++++++++++-
 3 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/lib/gpgpu_shader.c b/lib/gpgpu_shader.c
index a98abc57e..40161c52b 100644
--- a/lib/gpgpu_shader.c
+++ b/lib/gpgpu_shader.c
@@ -628,6 +628,34 @@ void gpgpu_shader__write_dword(struct gpgpu_shader *shdr, uint32_t value,
 	", 2, y_offset, 3, value, value, value, value);
 }
 
+/**
+ * gpgpu_shader__clear_exception:
+ * @shdr: shader to be modified
+ * @value: exception bits to be cleared
+ *
+ * Clear provided bits in exception register: cr0.1 &= ~value.
+ */
+void gpgpu_shader__clear_exception(struct gpgpu_shader *shdr, uint32_t value)
+{
+	emit_iga64_code(shdr, clear_exception, "		\n\
+(W)	and (1|M0) cr0.1<1>:ud cr0.1<0;1,0>:ud ARG(0):ud	\n\
+	", ~value);
+}
+
+/**
+ * gpgpu_shader__set_exception:
+ * @shdr: shader to be modified
+ * @value: exception bits to be set
+ *
+ * Set provided bits in exception register: cr0.1 |= value.
+ */
+void gpgpu_shader__set_exception(struct gpgpu_shader *shdr, uint32_t value)
+{
+	emit_iga64_code(shdr, set_exception, "		\n\
+(W)	or (1|M0) cr0.1<1>:ud cr0.1<0;1,0>:ud ARG(0):ud	\n\
+	", value);
+}
+
 /**
  * gpgpu_shader__write_on_exception:
  * @shdr: shader to be modified
diff --git a/lib/gpgpu_shader.h b/lib/gpgpu_shader.h
index 76ff4989e..0bbeae66f 100644
--- a/lib/gpgpu_shader.h
+++ b/lib/gpgpu_shader.h
@@ -66,6 +66,8 @@ void gpgpu_shader__common_target_write(struct gpgpu_shader *shdr,
 				       uint32_t y_offset, const uint32_t value[4]);
 void gpgpu_shader__common_target_write_u32(struct gpgpu_shader *shdr,
 				     uint32_t y_offset, uint32_t value);
+void gpgpu_shader__clear_exception(struct gpgpu_shader *shdr, uint32_t value);
+void gpgpu_shader__set_exception(struct gpgpu_shader *shdr, uint32_t value);
 void gpgpu_shader__end_system_routine(struct gpgpu_shader *shdr,
 				      bool breakpoint_suppress);
 void gpgpu_shader__end_system_routine_step_if_eq(struct gpgpu_shader *shdr,
diff --git a/lib/iga64_generated_codes.c b/lib/iga64_generated_codes.c
index 71429d442..2cba1b315 100644
--- a/lib/iga64_generated_codes.c
+++ b/lib/iga64_generated_codes.c
@@ -3,7 +3,7 @@
 
 #include "gpgpu_shader.h"
 
-#define MD5_SUM_IGA64_ASMS 88529cc180578939c0b8c4bb29da7db6
+#define MD5_SUM_IGA64_ASMS 6cfe013e2a99076bcdf69ecdbf4333cf
 
 struct iga64_template const iga64_code_end_system_routine_step_if_eq[] = {
 	{ .gen_ver = 2000, .size = 44, .code = (const uint32_t []) {
@@ -170,6 +170,36 @@ struct iga64_template const iga64_code_write_on_exception[] = {
 	}}
 };
 
+struct iga64_template const iga64_code_set_exception[] = {
+	{ .gen_ver = 1272, .size = 8, .code = (const uint32_t []) {
+		0x80000966, 0x80118220, 0x02008010, 0xc0ded000,
+		0x80000901, 0x00010000, 0x00000000, 0x00000000,
+	}},
+	{ .gen_ver = 1250, .size = 8, .code = (const uint32_t []) {
+		0x80000966, 0x80218220, 0x02008020, 0xc0ded000,
+		0x80000901, 0x00010000, 0x00000000, 0x00000000,
+	}},
+	{ .gen_ver = 0, .size = 8, .code = (const uint32_t []) {
+		0x80000166, 0x80218220, 0x02008020, 0xc0ded000,
+		0x80000101, 0x00010000, 0x00000000, 0x00000000,
+	}}
+};
+
+struct iga64_template const iga64_code_clear_exception[] = {
+	{ .gen_ver = 1272, .size = 8, .code = (const uint32_t []) {
+		0x80000965, 0x80118220, 0x02008010, 0xc0ded000,
+		0x80000901, 0x00010000, 0x00000000, 0x00000000,
+	}},
+	{ .gen_ver = 1250, .size = 8, .code = (const uint32_t []) {
+		0x80000965, 0x80218220, 0x02008020, 0xc0ded000,
+		0x80000901, 0x00010000, 0x00000000, 0x00000000,
+	}},
+	{ .gen_ver = 0, .size = 8, .code = (const uint32_t []) {
+		0x80000165, 0x80218220, 0x02008020, 0xc0ded000,
+		0x80000101, 0x00010000, 0x00000000, 0x00000000,
+	}}
+};
+
 struct iga64_template const iga64_code_media_block_write[] = {
 	{ .gen_ver = 2000, .size = 56, .code = (const uint32_t []) {
 		0x80000061, 0x05054220, 0x00000000, 0xc0ded003,
-- 
2.34.1