Mesa (master): radeonsi: increase array size for shader inputs and outputs

[Michel Dänzer]

Module: Mesa
Branch: master
Commit: 2eac0aa1d8d6fbdbbee43e44b24cff7f71733764
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2eac0aa1d8d6fbdbbee43e44b24cff7f71733764

Author: Marek Olšák <maraeo at gmail.com>
Date:   Tue May 14 19:37:17 2013 +0200

radeonsi: increase array size for shader inputs and outputs

and add assertions to prevent buffer overflow. This fixes corruption
of the si_shader struct.

NOTE: This is a candidate for the 9.1 branch.

[ Cherry-pick of r600g commit da33f9b919039442e9ab51f9b1d1c83a73607133 ]

Reviewed-by: Marek Olšák <maraeo at gmail.com>

---

 src/gallium/drivers/radeonsi/radeonsi_shader.c |    2 ++
 src/gallium/drivers/radeonsi/radeonsi_shader.h |    4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index f942436..bea2895 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -589,6 +589,7 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
 		switch (d->Declaration.File) {
 		case TGSI_FILE_INPUT:
 			i = shader->ninput++;
+			assert(i < Elements(shader->input));
 			shader->input[i].name = d->Semantic.Name;
 			shader->input[i].sid = d->Semantic.Index;
 			shader->input[i].interpolate = d->Interp.Interpolate;
@@ -597,6 +598,7 @@ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base)
 
 		case TGSI_FILE_OUTPUT:
 			i = shader->noutput++;
+			assert(i < Elements(shader->output));
 			shader->output[i].name = d->Semantic.Name;
 			shader->output[i].sid = d->Semantic.Index;
 			shader->output[i].interpolate = d->Interp.Interpolate;
diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.h b/src/gallium/drivers/radeonsi/radeonsi_shader.h
index 1552dc2..0fbd601 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.h
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.h
@@ -101,10 +101,10 @@ struct si_pipe_shader_selector {
 
 struct si_shader {
 	unsigned		ninput;
-	struct si_shader_io	input[32];
+	struct si_shader_io	input[40];
 
 	unsigned		noutput;
-	struct si_shader_io	output[32];
+	struct si_shader_io	output[40];
 
 	unsigned		ninterp;
 	bool			uses_kill;