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-rw-r--r--src/mesa/tnl/t_vertex_sse.c16
-rw-r--r--src/mesa/x86/rtasm/x86sse.c25
-rw-r--r--src/mesa/x86/rtasm/x86sse.h3
3 files changed, 31 insertions, 13 deletions
diff --git a/src/mesa/tnl/t_vertex_sse.c b/src/mesa/tnl/t_vertex_sse.c
index ad4cc62d5f..9515d9f81f 100644
--- a/src/mesa/tnl/t_vertex_sse.c
+++ b/src/mesa/tnl/t_vertex_sse.c
@@ -39,6 +39,12 @@
#include "x86/common_x86_asm.h"
+/**
+ * Number of bytes to allocate for generated SSE functions
+ */
+#define MAX_SSE_CODE_SIZE 1024
+
+
#define X 0
#define Y 1
#define Z 2
@@ -348,8 +354,6 @@ static GLboolean build_vertex_emit( struct x86_program *p )
struct x86_reg vp1 = x86_make_reg(file_XMM, 2);
GLubyte *fixup, *label;
- x86_init_func(&p->func);
-
/* Push a few regs?
*/
x86_push(&p->func, countEBP);
@@ -621,7 +625,10 @@ static GLboolean build_vertex_emit( struct x86_program *p )
x86_pop(&p->func, countEBP);
x86_ret(&p->func);
+ assert(!vtx->emit);
vtx->emit = (tnl_emit_func)x86_get_func(&p->func);
+
+ assert( (char *) p->func.csr - (char *) p->func.store <= MAX_SSE_CODE_SIZE );
return GL_TRUE;
}
@@ -646,7 +653,10 @@ void _tnl_generate_sse_emit( GLcontext *ctx )
p.identity = x86_make_reg(file_XMM, 6);
p.chan0 = x86_make_reg(file_XMM, 7);
- x86_init_func(&p.func);
+ if (!x86_init_func(&p.func, MAX_SSE_CODE_SIZE)) {
+ vtx->emit = NULL;
+ return;
+ }
if (build_vertex_emit(&p)) {
_tnl_register_fastpath( vtx, GL_TRUE );
diff --git a/src/mesa/x86/rtasm/x86sse.c b/src/mesa/x86/rtasm/x86sse.c
index 3ea37bb5e7..612cd51a6e 100644
--- a/src/mesa/x86/rtasm/x86sse.c
+++ b/src/mesa/x86/rtasm/x86sse.c
@@ -1063,20 +1063,29 @@ struct x86_reg x86_fn_arg( struct x86_function *p,
}
-void x86_init_func( struct x86_function *p )
-{
- x86_init_func_size(p, 1024);
-}
-
-void x86_init_func_size( struct x86_function *p, GLuint code_size )
+/**
+ * Initialize an x86_function object, allocating space for up to
+ * 'code_size' bytes of code.
+ */
+GLboolean x86_init_func( struct x86_function *p, GLuint code_size )
{
+ assert(!p->store);
p->store = _mesa_exec_malloc(code_size);
- p->csr = p->store;
+ if (p->store) {
+ p->csr = p->store;
+ return GL_TRUE;
+ }
+ else {
+ p->csr = NULL;
+ return GL_FALSE;
+ }
}
void x86_release_func( struct x86_function *p )
{
- _mesa_exec_free(p->store);
+ if (p->store)
+ _mesa_exec_free(p->store);
+ p->store = p->csr = NULL;
}
diff --git a/src/mesa/x86/rtasm/x86sse.h b/src/mesa/x86/rtasm/x86sse.h
index 66fb852ac9..42b09937bc 100644
--- a/src/mesa/x86/rtasm/x86sse.h
+++ b/src/mesa/x86/rtasm/x86sse.h
@@ -80,8 +80,7 @@ enum sse_cc {
*/
-void x86_init_func( struct x86_function *p );
-void x86_init_func_size( struct x86_function *p, GLuint code_size );
+GLboolean x86_init_func( struct x86_function *p, GLuint code_size );
void x86_release_func( struct x86_function *p );
void (*x86_get_func( struct x86_function *p ))( void );