111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/* Copyright (c) 2018-2019 Alyssa Rosenzweig (alyssa@rosenzweig.io)
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* Copyright (C) 2019-2020 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __MIDGARD_OPS
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#define __MIDGARD_OPS
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#include "helpers.h"
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/* Forward declare */
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extern struct mir_op_props alu_opcode_props[256];
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extern struct mir_ldst_op_props load_store_opcode_props[256];
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extern struct mir_tex_op_props tex_opcode_props[16];
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extern struct mir_tag_props midgard_tag_props[16];
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#define OP_IS_ATOMIC(op) (load_store_opcode_props[op].props & LDST_ATOMIC)
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#define OP_USES_ATTRIB(op) (load_store_opcode_props[op].props & LDST_ATTRIB)
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#define OP_IS_STORE(op) (load_store_opcode_props[op].props & LDST_STORE)
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#define OP_HAS_ADDRESS(op) (load_store_opcode_props[op].props & LDST_ADDRESS)
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/* Is this opcode that of an integer (regardless of signedness)? Instruction
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* names authoritatively determine types */
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static inline bool
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midgard_is_integer_op(int op)
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{
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return (op >= 0x40 && op <= 0x7E) || (op >= 0xA0 && op <= 0xC1);
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}
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static inline bool
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midgard_is_unsigned_op(int op)
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{
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assert(midgard_is_integer_op(op));
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switch (op) {
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case midgard_alu_op_uaddsat:
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case midgard_alu_op_usubsat:
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case midgard_alu_op_uwmul:
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case midgard_alu_op_umin:
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case midgard_alu_op_umax:
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case midgard_alu_op_uavg:
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case midgard_alu_op_uravg:
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case midgard_alu_op_ushlsat:
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case midgard_alu_op_uabsdiff:
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case midgard_alu_op_ult:
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case midgard_alu_op_ule:
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case midgard_alu_op_uball_lt:
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case midgard_alu_op_uball_lte:
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case midgard_alu_op_ubany_lt:
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case midgard_alu_op_ubany_lte:
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case midgard_alu_op_u2f_rte:
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case midgard_alu_op_u2f_rtz:
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case midgard_alu_op_u2f_rtn:
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case midgard_alu_op_u2f_rtp:
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return true;
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default:
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return false;
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}
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}
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/* Does this opcode *write* an integer? Same as is_integer_op, unless it's a
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* conversion between int<->float in which case we do the opposite */
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static inline bool
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midgard_is_integer_out_op(int op)
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{
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bool is_int = midgard_is_integer_op(op);
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bool is_conversion = alu_opcode_props[op].props & OP_TYPE_CONVERT;
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return is_int ^ is_conversion;
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}
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/* Determines effective writemask, taking quirks and expansion into account */
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static inline unsigned
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effective_writemask(midgard_alu_op op, unsigned existing_mask)
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{
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/* Channel count is off-by-one to fit in two-bits (0 channel makes no
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* sense) */
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unsigned channel_count = GET_CHANNEL_COUNT(alu_opcode_props[op].props);
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/* If there is a fixed channel count, construct the appropriate mask */
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if (channel_count)
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return (1 << channel_count) - 1;
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return existing_mask;
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};
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#endif
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