Commit 7904a293 authored by Alyssa Rosenzweig's avatar Alyssa Rosenzweig 💜 Committed by Marge Bot
Browse files

pan/bit: Stub out BIR interpreter



We'd like to step through a BIR program to evaluate it for testing.
Let's stub out some infrastructure for modeling Bifrost.
Signed-off-by: Alyssa Rosenzweig's avatarAlyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <mesa/mesa!4458>
parent 8eefb276
/*
* Copyright (C) 2020 Collabora Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors (Collabora):
* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
*/
#include "bit.h"
typedef union {
uint64_t u64;
uint32_t u32;
uint16_t u16[2];
uint8_t u8[4];
double f64;
float f32;
uint16_t f16;
} bit_t;
/* Interprets a subset of Bifrost IR required for automated testing */
static uint64_t
bit_read(struct bit_state *s, bi_instruction *ins, unsigned index, nir_alu_type T)
{
/* STUB */
return 0;
}
static void
bit_write(struct bit_state *s, unsigned index, nir_alu_type T, bit_t value)
{
/* STUB */
}
void
bit_step(struct bit_state *s, bi_instruction *ins)
{
/* First, load sources */
bit_t srcs[BIR_SRC_COUNT] = { 0 };
bi_foreach_src(ins, src)
srcs[src].u64 = bit_read(s, ins, ins->src[src], ins->src_types[src]);
/* Next, do the action of the instruction */
bit_t dest = { 0 };
switch (ins->type) {
case BI_ADD:
case BI_ATEST:
case BI_BRANCH:
case BI_CMP:
case BI_BLEND:
case BI_BITWISE:
case BI_COMBINE:
case BI_CONVERT:
case BI_CSEL:
case BI_DISCARD:
case BI_FMA:
case BI_FREXP:
case BI_ISUB:
case BI_LOAD:
case BI_LOAD_UNIFORM:
case BI_LOAD_ATTR:
case BI_LOAD_VAR:
case BI_LOAD_VAR_ADDRESS:
case BI_MINMAX:
case BI_MOV:
case BI_SHIFT:
case BI_STORE:
case BI_STORE_VAR:
case BI_SPECIAL: /* _FAST, _TABLE on supported GPUs */
case BI_SWIZZLE:
case BI_TEX:
case BI_ROUND:
default:
unreachable("Unsupported op");
}
/* Finally, store the result */
bit_write(s, ins->dest, ins->dest_type, dest);
}
......@@ -31,6 +31,7 @@
#include "panfrost/encoder/pan_device.h"
#include "panfrost/encoder/pan_bo.h"
#include "bifrost_compile.h"
#include "bifrost/compiler.h"
struct panfrost_device *
bit_initialize(void *memctx);
......@@ -49,6 +50,15 @@ bit_vertex(struct panfrost_device *dev, panfrost_program prog,
uint32_t *iattr, size_t sz_attr,
uint32_t *expected, size_t sz_expected, enum bit_debug);
/* BIT interpreter */
struct bit_state {
uint32_t r[64];
};
void
bit_step(struct bit_state *s, bi_instruction *ins);
#endif
......@@ -36,7 +36,8 @@ subdir('encoder')
files_bifrost = files(
'bifrost/cmdline.c',
'bifrost/test/bi_submit.c'
'bifrost/test/bi_submit.c',
'bifrost/test/bi_interpret.c',
)
bifrost_compiler = executable(
......
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