From 8162d317d2f6f2dcc31f31c0c2d663c33dfee053 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Wed, 13 Feb 2008 12:35:16 +0000
Subject: x86: emit absolute calls, as reallocating exec mem breaks relative
 ones

---
 src/mesa/x86/rtasm/x86sse.c | 13 +++++++++++++
 src/mesa/x86/rtasm/x86sse.h |  3 ++-
 2 files changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/mesa/x86/rtasm')

diff --git a/src/mesa/x86/rtasm/x86sse.c b/src/mesa/x86/rtasm/x86sse.c
index 385fb84c01..e944d00f9e 100644
--- a/src/mesa/x86/rtasm/x86sse.c
+++ b/src/mesa/x86/rtasm/x86sse.c
@@ -278,11 +278,24 @@ void x86_jmp( struct x86_function *p, unsigned char *label)
    emit_1i(p, label - x86_get_label(p) - 4);
 }
 
+#if 0
+/* This doesn't work once we start reallocating & copying the
+ * generated code on buffer fills, because the call is relative to the
+ * current pc.
+ */
 void x86_call( struct x86_function *p, void (*label)())
 {
    emit_1ub(p, 0xe8);
    emit_1i(p, cptr(label) - x86_get_label(p) - 4);
 }
+#else
+void x86_call( struct x86_function *p, struct x86_reg reg)
+{
+   emit_1ub(p, 0xff);
+   emit_modrm(p, reg, reg);
+}
+#endif
+
 
 /* michal:
  * Temporary. As I need immediate operands, and dont want to mess with the codegen,
diff --git a/src/mesa/x86/rtasm/x86sse.h b/src/mesa/x86/rtasm/x86sse.h
index d53b6d71a6..c2aa416492 100644
--- a/src/mesa/x86/rtasm/x86sse.h
+++ b/src/mesa/x86/rtasm/x86sse.h
@@ -119,7 +119,8 @@ void x86_fixup_fwd_jump( struct x86_function *p,
 
 void x86_jmp( struct x86_function *p, unsigned char *label );
 
-void x86_call( struct x86_function *p, void (*label)() );
+/* void x86_call( struct x86_function *p, void (*label)() ); */
+void x86_call( struct x86_function *p, struct x86_reg reg);
 
 /* michal:
  * Temporary. As I need immediate operands, and dont want to mess with the codegen,
-- 
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