Shaders that contain instruction data after an instruction with EOP could end up parsing that as an instruction, leading to various crashes and asserts in SB as it gets very confused if it sees for instance a loop start instruction jumping off to some random point.
Add a couple of asserts, and print EOP bit if set in old asm printer. Signed-off-by: Glenn Kennard <[email protected]> --- src/gallium/drivers/r600/r600_asm.c | 2 ++ src/gallium/drivers/r600/sb/sb_bc_decoder.cpp | 1 + src/gallium/drivers/r600/sb/sb_bc_parser.cpp | 4 +++- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/src/gallium/drivers/r600/r600_asm.c b/src/gallium/drivers/r600/r600_asm.c index 762cc7f..b514c58 100644 --- a/src/gallium/drivers/r600/r600_asm.c +++ b/src/gallium/drivers/r600/r600_asm.c @@ -2029,6 +2029,8 @@ void r600_bytecode_disasm(struct r600_bytecode *bc) fprintf(stderr, "CND:%X ", cf->cond); if (cf->pop_count) fprintf(stderr, "POP:%X ", cf->pop_count); + if (cf->end_of_program) + fprintf(stderr, "EOP "); fprintf(stderr, "\n"); } } diff --git a/src/gallium/drivers/r600/sb/sb_bc_decoder.cpp b/src/gallium/drivers/r600/sb/sb_bc_decoder.cpp index 5e233f9..5fe8f50 100644 --- a/src/gallium/drivers/r600/sb/sb_bc_decoder.cpp +++ b/src/gallium/drivers/r600/sb/sb_bc_decoder.cpp @@ -32,6 +32,7 @@ int bc_decoder::decode_cf(unsigned &i, bc_cf& bc) { int r = 0; uint32_t dw0 = dw[i]; uint32_t dw1 = dw[i+1]; + assert(i+1 <= ndw); if ((dw1 >> 29) & 1) { // CF_ALU return decode_cf_alu(i, bc); diff --git a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp index 4879c03..748aae2 100644 --- a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp +++ b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp @@ -95,7 +95,7 @@ int bc_parser::decode_shader() { if ((r = decode_cf(i, eop))) return r; - } while (!eop || (i >> 1) <= max_cf); + } while (!eop || (i >> 1) < max_cf); return 0; } @@ -769,6 +769,7 @@ int bc_parser::prepare_ir() { } int bc_parser::prepare_loop(cf_node* c) { + assert(c->bc.addr-1 < cf_map.size()); cf_node *end = cf_map[c->bc.addr - 1]; assert(end->bc.op == CF_OP_LOOP_END); @@ -788,6 +789,7 @@ int bc_parser::prepare_loop(cf_node* c) { } int bc_parser::prepare_if(cf_node* c) { + assert(c->bc.addr-1 < cf_map.size()); cf_node *c_else = NULL, *end = cf_map[c->bc.addr]; BCP_DUMP( -- 1.9.1 _______________________________________________ mesa-dev mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-dev
