[PATCH v2 2/5] vkd3d-shader: Check that instructions are valid.

[Giovanni Mascellani]

From: Giovanni Mascellani

---
 libs/vkd3d-shader/ir.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index bc205c5d..39b6ae60 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -1299,15 +1299,35 @@ struct validation_context
     struct vkd3d_string_buffer messages;
 };

+static void vkd3d_shader_validate_instruction(struct validation_context *ctx,
+        size_t instruction_idx)
+{
+    const struct vkd3d_shader_instruction *instruction = &ctx->parser->instructions.elements[instruction_idx];
+
+    switch (instruction->handler_idx)
+    {
+        case VKD3DSIH_INVALID:
+            vkd3d_string_buffer_printf(&ctx->messages, "Instruction %zu: invalid handler.\n", instruction_idx);
+            break;
+
+        default:
+            break;
+    }
+}
+
 void vkd3d_shader_validate_vsir(struct vkd3d_shader_parser *parser)
 {
     struct validation_context ctx = { .parser = parser };
+    size_t i;

if (!TRACE_ON())
         return;

vkd3d_string_buffer_init(&ctx.messages);

+    for (i = 0; i < parser->instructions.count; ++i)
+        vkd3d_shader_validate_instruction(&ctx, i);
+
     if (ctx.messages.content_size)
     {
         ERR("Malformed instruction stream\n");