intel: tools: add aubinator_error_decode tool

This is pretty much the same tool as what i-g-t has, only with a more
fancy decoding of the instructions/registers. It also doesn't support
anything before gen4.

v2 (from Matt): Drop authors
                Remove undefined automake variable

v3: Fix incorrect offsets for dword > 1 (Jordan)

v4: Fix decompression error with large blobs (Jordan)

Signed-off-by: Lionel Landwerlin <[email protected]>
Acked-by: Matt Turner <[email protected]>

2 files changed, 12 insertions, 0 deletions

diff --git a/src/intel/common/gen_decoder.c b/src/intel/common/gen_decoder.c
index 6cc6896b057..1ae78c88e3f 100644
--- a/src/intel/common/gen_decoder.c
+++ b/src/intel/common/gen_decoder.c
@@ -108,6 +108,17 @@ gen_spec_find_register(struct gen_spec *spec, uint32_t offset)
    return NULL;
 }
 
+struct gen_group *
+gen_spec_find_register_by_name(struct gen_spec *spec, const char *name)
+{
+   for (int i = 0; i < spec->nregisters; i++) {
+      if (strcmp(spec->registers[i]->name, name) == 0)
+         return spec->registers[i];
+   }
+
+   return NULL;
+}
+
 struct gen_enum *
 gen_spec_find_enum(struct gen_spec *spec, const char *name)
 {
diff --git a/src/intel/common/gen_decoder.h b/src/intel/common/gen_decoder.h
index be37e8a5424..870bd7f7841 100644
--- a/src/intel/common/gen_decoder.h
+++ b/src/intel/common/gen_decoder.h
@@ -45,6 +45,7 @@ struct gen_spec *gen_spec_load_from_path(const struct gen_device_info *devinfo,
 uint32_t gen_spec_get_gen(struct gen_spec *spec);
 struct gen_group *gen_spec_find_instruction(struct gen_spec *spec, const uint32_t *p);
 struct gen_group *gen_spec_find_register(struct gen_spec *spec, uint32_t offset);
+struct gen_group *gen_spec_find_register_by_name(struct gen_spec *spec, const char *name);
 int gen_group_get_length(struct gen_group *group, const uint32_t *p);
 const char *gen_group_get_name(struct gen_group *group);
 uint32_t gen_group_get_opcode(struct gen_group *group);