Merge branch 'master' into libretro

libretro · Jan 6, 2025 · 60e75db · 60e75db
2 parents 3fc26d1 + db2804f
commit 60e75db
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Showing 6 changed files with 116 additions and 109 deletions.
diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu.c b/plugins/gpu_neon/psx_gpu/psx_gpu.c
@@ -528,6 +528,11 @@ void flush_render_block_buffer(psx_gpu_struct *psx_gpu)
     render_block_handler_struct *render_block_handler =
      psx_gpu->render_block_handler;
 
+#if defined(__arm__) && defined(NEON_BUILD) && !defined(SIMD_BUILD)
+    // the asm doesn't bother to save callee-save vector regs, so do it here
+    __asm__ __volatile__("":::"q4","q5","q6","q7");
+#endif
+
     render_block_handler->texture_blocks(psx_gpu);
     render_block_handler->shade_blocks(psx_gpu);
     render_block_handler->blend_blocks(psx_gpu);
@@ -538,6 +543,9 @@ void flush_render_block_buffer(psx_gpu_struct *psx_gpu)
 #endif
 
     psx_gpu->num_blocks = 0;
+#if defined(__arm__) && defined(NEON_BUILD) && !defined(SIMD_BUILD)
+    __asm__ __volatile__("":::"q4","q5","q6","q7");
+#endif
   }
 }
 
@@ -3037,6 +3045,11 @@ static void render_triangle_p(psx_gpu_struct *psx_gpu,
   triangle_set_direction(y_direction_b, y_delta_b);
   triangle_set_direction(y_direction_c, y_delta_c);
 
+#if defined(__arm__) && defined(NEON_BUILD) && !defined(SIMD_BUILD)
+  // the asm doesn't bother to save callee-save vector regs, so do it here
+  __asm__ __volatile__("vstmia %0, {q4-q7}" :: "r"(psx_gpu->saved_q4_q7) : "memory");
+#endif
+
   compute_all_gradients(psx_gpu, a, b, c);
 
   switch(y_direction_a | (y_direction_b << 2) | (y_direction_c << 4) |
@@ -3163,6 +3176,10 @@ static void render_triangle_p(psx_gpu_struct *psx_gpu,
    &(render_triangle_block_handlers[render_state]);
   ((setup_blocks_function_type *)psx_gpu->render_block_handler->setup_blocks)
    (psx_gpu);
+
+#if defined(__arm__) && defined(NEON_BUILD) && !defined(SIMD_BUILD)
+  __asm__ __volatile__("vldmia %0, {q4-q7}" :: "r"(psx_gpu->saved_q4_q7));
+#endif
 }
 
 void render_triangle(psx_gpu_struct *psx_gpu, vertex_struct *vertexes,

diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu.h b/plugins/gpu_neon/psx_gpu/psx_gpu.h
@@ -218,7 +218,11 @@ typedef struct
 
   // Align up to 64 byte boundary to keep the upcoming buffers cache line
   // aligned, also make reachable with single immediate addition
-  u8 reserved_a[180 + 9*4 - 9*sizeof(void *)];
+  u8 reserved_a[68 + 9*4 - 9*sizeof(void *)];
+
+  // space for saving regs on c call to flush_render_block_buffer() and asm
+  u32 saved_tmp[48 / sizeof(u32)];
+  u32 saved_q4_q7[64 / sizeof(u32)];
 
   // 8KB
   block_struct blocks[MAX_BLOCKS_PER_ROW];