Add new attribute called static_dispatch to the <function> element. This

boolean attribute, which defaults to true, determines whether or not a
static dispatch function is available in libGL for applications to link
against.

Ideally, any new functions that are not part of the ABI should not have
directly accessable dispatch functions.  This forces applications to use
glXGetProcAddress to access these functions.  By doing this we can
gracefully remove functions from libGL without breaking the linkage of
applications.

Note that the static dispatch functions are still generated.  However, they
are given names like gl_dispatch_stub_820 and are marked with the "hidden"
linker attribute.

All extension functions added since the previous Mesa release (6.5) have
been marked as 'static_dispatch="false"'.

1 files changed, 30 insertions, 24 deletions

diff --git a/src/mesa/x86-64/glapi_x86-64.S b/src/mesa/x86-64/glapi_x86-64.S
index 39896eb2b96..c826619eb63 100644
--- a/src/mesa/x86-64/glapi_x86-64.S
+++ b/src/mesa/x86-64/glapi_x86-64.S
@@ -30937,9 +30937,10 @@ GL_PREFIX(BlitFramebufferEXT):
 	.size	GL_PREFIX(BlitFramebufferEXT), .-GL_PREFIX(BlitFramebufferEXT)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(BindVertexArrayAPPLE)
-	.type	GL_PREFIX(BindVertexArrayAPPLE), @function
-GL_PREFIX(BindVertexArrayAPPLE):
+	.globl	GL_PREFIX(_dispatch_stub_819)
+	.type	GL_PREFIX(_dispatch_stub_819), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_819))
+GL_PREFIX(_dispatch_stub_819):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6552(%rax), %r11
@@ -30963,12 +30964,13 @@ GL_PREFIX(BindVertexArrayAPPLE):
 	movq	6552(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(BindVertexArrayAPPLE), .-GL_PREFIX(BindVertexArrayAPPLE)
+	.size	GL_PREFIX(_dispatch_stub_819), .-GL_PREFIX(_dispatch_stub_819)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(DeleteVertexArraysAPPLE)
-	.type	GL_PREFIX(DeleteVertexArraysAPPLE), @function
-GL_PREFIX(DeleteVertexArraysAPPLE):
+	.globl	GL_PREFIX(_dispatch_stub_820)
+	.type	GL_PREFIX(_dispatch_stub_820), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_820))
+GL_PREFIX(_dispatch_stub_820):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6560(%rax), %r11
@@ -31000,12 +31002,13 @@ GL_PREFIX(DeleteVertexArraysAPPLE):
 	movq	6560(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(DeleteVertexArraysAPPLE), .-GL_PREFIX(DeleteVertexArraysAPPLE)
+	.size	GL_PREFIX(_dispatch_stub_820), .-GL_PREFIX(_dispatch_stub_820)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(GenVertexArraysAPPLE)
-	.type	GL_PREFIX(GenVertexArraysAPPLE), @function
-GL_PREFIX(GenVertexArraysAPPLE):
+	.globl	GL_PREFIX(_dispatch_stub_821)
+	.type	GL_PREFIX(_dispatch_stub_821), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_821))
+GL_PREFIX(_dispatch_stub_821):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6568(%rax), %r11
@@ -31037,12 +31040,13 @@ GL_PREFIX(GenVertexArraysAPPLE):
 	movq	6568(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(GenVertexArraysAPPLE), .-GL_PREFIX(GenVertexArraysAPPLE)
+	.size	GL_PREFIX(_dispatch_stub_821), .-GL_PREFIX(_dispatch_stub_821)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(IsVertexArrayAPPLE)
-	.type	GL_PREFIX(IsVertexArrayAPPLE), @function
-GL_PREFIX(IsVertexArrayAPPLE):
+	.globl	GL_PREFIX(_dispatch_stub_822)
+	.type	GL_PREFIX(_dispatch_stub_822), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_822))
+GL_PREFIX(_dispatch_stub_822):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6576(%rax), %r11
@@ -31066,12 +31070,13 @@ GL_PREFIX(IsVertexArrayAPPLE):
 	movq	6576(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(IsVertexArrayAPPLE), .-GL_PREFIX(IsVertexArrayAPPLE)
+	.size	GL_PREFIX(_dispatch_stub_822), .-GL_PREFIX(_dispatch_stub_822)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(ProgramEnvParameters4fvEXT)
-	.type	GL_PREFIX(ProgramEnvParameters4fvEXT), @function
-GL_PREFIX(ProgramEnvParameters4fvEXT):
+	.globl	GL_PREFIX(_dispatch_stub_823)
+	.type	GL_PREFIX(_dispatch_stub_823), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_823))
+GL_PREFIX(_dispatch_stub_823):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6584(%rax), %r11
@@ -31111,12 +31116,13 @@ GL_PREFIX(ProgramEnvParameters4fvEXT):
 	movq	6584(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(ProgramEnvParameters4fvEXT), .-GL_PREFIX(ProgramEnvParameters4fvEXT)
+	.size	GL_PREFIX(_dispatch_stub_823), .-GL_PREFIX(_dispatch_stub_823)
 
 	.p2align	4,,15
-	.globl	GL_PREFIX(ProgramLocalParameters4fvEXT)
-	.type	GL_PREFIX(ProgramLocalParameters4fvEXT), @function
-GL_PREFIX(ProgramLocalParameters4fvEXT):
+	.globl	GL_PREFIX(_dispatch_stub_824)
+	.type	GL_PREFIX(_dispatch_stub_824), @function
+	HIDDEN(GL_PREFIX(_dispatch_stub_824))
+GL_PREFIX(_dispatch_stub_824):
 #if defined(GLX_USE_TLS)
 	call	_x86_64_get_dispatch@PLT
 	movq	6592(%rax), %r11
@@ -31156,7 +31162,7 @@ GL_PREFIX(ProgramLocalParameters4fvEXT):
 	movq	6592(%rax), %r11
 	jmp	*%r11
 #endif /* defined(GLX_USE_TLS) */
-	.size	GL_PREFIX(ProgramLocalParameters4fvEXT), .-GL_PREFIX(ProgramLocalParameters4fvEXT)
+	.size	GL_PREFIX(_dispatch_stub_824), .-GL_PREFIX(_dispatch_stub_824)
 
 	.globl GL_PREFIX(ArrayElementEXT) ; .set GL_PREFIX(ArrayElementEXT), GL_PREFIX(ArrayElement)
 	.globl GL_PREFIX(BindTextureEXT) ; .set GL_PREFIX(BindTextureEXT), GL_PREFIX(BindTexture)