freedreno: C++ fixes for computerator to compile

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22148>

src/freedreno/common/freedreno_common.h

@@ -116,9 +116,9 @@ struct BitmaskEnum {
 #endif
 
 /*
- * swap - swap value of @a and @b
+ * SWAP - swap value of @a and @b
  */
-#define swap(a, b)                                                             \
+#define SWAP(a, b)                                                             \
    do {                                                                        \
       __typeof(a) __tmp = (a);                                                 \
       (a) = (b);                                                               \

src/freedreno/ir3/ir3_assembler.h

@@ -29,6 +29,10 @@
 
 #define MAX_BUFS 4
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct ir3_kernel_info {
    uint32_t num_bufs;
    uint32_t buf_sizes[MAX_BUFS]; /* size in dwords */
@@ -46,4 +50,8 @@ struct ir3_compiler;
 struct ir3_shader *ir3_parse_asm(struct ir3_compiler *c,
                                  struct ir3_kernel_info *info, FILE *in);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __IR3_ASSEMBLER_H__ */

src/gallium/drivers/freedreno/freedreno_gmem.c

@@ -435,7 +435,7 @@ gmem_stateobj_init(struct fd_screen *screen, struct gmem_key *key)
       for (i = 0; i < gmem->nbins_y; i+=2) {
          unsigned col0 = gmem->nbins_x * i;
          for (j = 0; j < gmem->nbins_x/2; j++) {
-            swap(gmem->tile[col0 + j], gmem->tile[col0 + gmem->nbins_x - j - 1]);
+            SWAP(gmem->tile[col0 + j], gmem->tile[col0 + gmem->nbins_x - j - 1]);
          }
       }
    }

src/gallium/drivers/freedreno/freedreno_resource.c

@@ -452,15 +452,15 @@ fd_try_shadow_resource(struct fd_context *ctx, struct fd_resource *rsc,
    DBG("shadow: %p (%d, %p) -> %p (%d, %p)", rsc, rsc->b.b.reference.count,
        rsc->track, shadow, shadow->b.b.reference.count, shadow->track);
 
-   swap(rsc->bo, shadow->bo);
-   swap(rsc->valid, shadow->valid);
+   SWAP(rsc->bo, shadow->bo);
+   SWAP(rsc->valid, shadow->valid);
 
    /* swap() doesn't work because you can't typeof() the bitfield. */
    bool temp = shadow->needs_ubwc_clear;
    shadow->needs_ubwc_clear = rsc->needs_ubwc_clear;
    rsc->needs_ubwc_clear = temp;
 
-   swap(rsc->layout, shadow->layout);
+   SWAP(rsc->layout, shadow->layout);
    rsc->seqno = seqno_next_u16(&ctx->screen->rsc_seqno);
 
    /* at this point, the newly created shadow buffer is not referenced
@@ -473,7 +473,7 @@ fd_try_shadow_resource(struct fd_context *ctx, struct fd_resource *rsc,
       _mesa_set_remove(batch->resources, entry);
       _mesa_set_add_pre_hashed(batch->resources, shadow->hash, shadow);
    }
-   swap(rsc->track, shadow->track);
+   SWAP(rsc->track, shadow->track);
 
    fd_screen_unlock(ctx->screen);
 

src/gallium/drivers/freedreno/freedreno_state.c

@@ -412,10 +412,10 @@ fd_set_viewport_states(struct pipe_context *pctx, unsigned start_slot,
 
       /* Handle inverted viewports. */
       if (minx > maxx) {
-         swap(minx, maxx);
+         SWAP(minx, maxx);
       }
       if (miny > maxy) {
-         swap(miny, maxy);
+         SWAP(miny, maxy);
       }
 
       const float max_dims = ctx->screen->gen >= 4 ? 16384.f : 4096.f;