intel/hang_replay: move common code into a lib

Before bringing support for Xe let's create a lib so that
the common code can live there.

Signed-off-by: Carlos Santa <carlos.santa@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34829>

src/intel/tools/intel_hang_replay.c

@@ -51,6 +51,7 @@
 
 #include "util/u_dynarray.h"
 #include "util/u_math.h"
+#include "intel_hang_replay_lib.h"
 
 #include "intel_tools.h"
 
@@ -181,20 +182,6 @@ gem_mmap_offset(int drm_fd,
    return map;
 }
 
-static void
-write_malloc_data(void *out_data,
-                  int file_fd,
-                  size_t size)
-{
-   size_t total_read_len = 0;
-   ssize_t read_len;
-   while (total_read_len < size &&
-          (read_len = read(file_fd, out_data + total_read_len, size - total_read_len)) > 0) {
-      total_read_len += read_len;
-   }
-   assert(total_read_len == size);
-}
-
 static void
 write_gem_bo_data(int drm_fd,
                   uint32_t gem_handle,
@@ -215,12 +202,6 @@ write_gem_bo_data(int drm_fd,
    assert(total_read_len == size);
 }
 
-static void
-skip_data(int file_fd, size_t size)
-{
-   lseek(file_fd, size, SEEK_CUR);
-}
-
 static int
 get_drm_device(struct intel_device_info *devinfo)
 {
@@ -251,22 +232,6 @@ get_drm_device(struct intel_device_info *devinfo)
    return fd;
 }
 
-struct gem_bo {
-   off_t    file_offset;
-   uint32_t gem_handle;
-   uint64_t offset;
-   uint64_t size;
-   bool     hw_img;
-};
-
-static int
-compare_bos(const void *b1, const void *b2)
-{
-   const struct gem_bo *gem_b1 = b1, *gem_b2 = b2;
-
-   return gem_b2->size > gem_b1->size;
-}
-
 static void
 print_help(const char *filename, FILE *f)
 {

src/intel/tools/intel_hang_replay_lib.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2025 Intel Corporation
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "intel_hang_replay_lib.h"
+
+int
+compare_bos(const void *b1, const void *b2)
+{
+   const struct gem_bo *gem_b1 = b1, *gem_b2 = b2;
+
+   return gem_b2->size > gem_b1->size;
+}
+
+void
+skip_data(int file_fd, size_t size)
+{
+   lseek(file_fd, size, SEEK_CUR);
+}
+
+void
+write_malloc_data(void *out_data,
+                  int file_fd,
+                  size_t size)
+{
+   size_t total_read_len = 0;
+   ssize_t read_len;
+   while (total_read_len < size &&
+          (read_len = read(file_fd, out_data + total_read_len, size - total_read_len)) > 0) {
+      total_read_len += read_len;
+   }
+   assert(total_read_len == size);
+}

src/intel/tools/intel_hang_replay_lib.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2025 Intel Corporation
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <unistd.h>
+
+struct gem_bo {
+   off_t file_offset;
+   uint32_t gem_handle;
+   uint64_t offset;
+   uint64_t size;
+   bool hw_img;
+};
+
+int compare_bos(const void *b1, const void *b2);
+void skip_data(int file_fd, size_t size);
+void write_malloc_data(void *out_data, int file_fd, size_t size);

src/intel/tools/meson.build

@@ -98,6 +98,7 @@ error2hangdump = executable(
 
 intel_hang_replay = executable(
   'intel_hang_replay',
+  files('intel_hang_replay_lib.c'),
   files('intel_hang_replay.c'),
   dependencies : [idep_intel_dev, idep_libintel_common, dep_libdrm, dep_dl, dep_thread, dep_m,
                   idep_libintel_tools],