From 265e210edb2fdf0f6ae777635676f05613b38eb7 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Wed, 19 Aug 2009 11:54:06 +0100 Subject: tgsi: add missing functionality to support instructions with labels Could previously emit opcodes with label arguments, but was no way to patch them with the actual destinations of those labels. Adds two functions: ureg_get_instruction_number - to get the id of the next instruction to be emitted ureg_fixup_label - to patch an emitted label to point to a given instruction number. Need some more complex examples than u_simple_shader, so far this has only been compile-tested. --- src/gallium/auxiliary/tgsi/tgsi_ureg.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'src/gallium/auxiliary/tgsi/tgsi_ureg.h') diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h index 0a976fd63b..5a48bb7a35 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h +++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h @@ -174,6 +174,33 @@ ureg_DECL_immediate1f( struct ureg_program *ureg, return ureg_DECL_immediate( ureg, v, 1 ); } +/*********************************************************************** + * Functions for patching up labels + */ + + +/* Will return a number which can be used in a label to point to the + * next instruction to be emitted. + */ +unsigned +ureg_get_instruction_number( struct ureg_program *ureg ); + + +/* Patch a given label (expressed as a token number) to point to a + * given instruction (expressed as an instruction number). + * + * Labels are obtained from instruction emitters, eg ureg_CAL(). + * Instruction numbers are obtained from ureg_get_instruction_number(), + * above. + */ +void +ureg_fixup_label(struct ureg_program *ureg, + unsigned label_token, + unsigned instruction_number ); + + + + /*********************************************************************** * Internal instruction helpers, don't call these directly: */ -- cgit v1.2.3