panfrost: Adopt gen_pack_header.py via v3d
We fork gen_pack_header.py from v3d, which in turn forks GenXML from Intel. Selected changes for Mali: * Custom prefix/vendoring * Cull supported types * Drop <register> and <packet> support (no cmdstream) * Pack 32-bit words instead of 8-bit bytes * Inline packing helpers * Introduce exact attribute * Introduce general minus(..) and shr(..) modifiers * Introduce word:bit syntax * Introduce prettyprinters Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6195>
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#encoding=utf-8
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# Copyright (C) 2016 Intel Corporation
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# Copyright (C) 2016 Broadcom
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# Copyright (C) 2020 Collabora, Ltd.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is 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 (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# 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
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# THE 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
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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import xml.parsers.expat
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import sys
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import operator
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from functools import reduce
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global_prefix = "mali"
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pack_header = """
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/* Generated code, see midgard.xml and gen_pack_header.py
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*
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* Packets, enums and structures for Panfrost.
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*
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* This file has been generated, do not hand edit.
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*/
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#ifndef PAN_PACK_H
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#define PAN_PACK_H
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#include <stdio.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <math.h>
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#include <inttypes.h>
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#include "util/u_math.h"
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#define __gen_unpack_float(x, y, z) uif(__gen_unpack_uint(x, y, z))
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static inline uint64_t
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__gen_uint(uint64_t v, uint32_t start, uint32_t end)
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{
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#ifndef NDEBUG
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const int width = end - start + 1;
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if (width < 64) {
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const uint64_t max = (1ull << width) - 1;
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assert(v <= max);
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}
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#endif
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return v << start;
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}
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static inline uint32_t
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__gen_sint(int32_t v, uint32_t start, uint32_t end)
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{
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const int width = end - start + 1;
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#ifndef NDEBUG
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if (width < 64) {
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const int64_t max = (1ll << (width - 1)) - 1;
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const int64_t min = -(1ll << (width - 1));
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assert(min <= v && v <= max);
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}
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#endif
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return ((uint32_t) v) << start;
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}
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static inline uint64_t
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__gen_unpack_uint(const uint8_t *restrict cl, uint32_t start, uint32_t end)
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{
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uint64_t val = 0;
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const int width = end - start + 1;
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const uint32_t mask = (width == 32 ? ~0 : (1 << width) - 1 );
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for (int byte = start / 8; byte <= end / 8; byte++) {
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val |= cl[byte] << ((byte - start / 8) * 8);
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}
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return (val >> (start % 8)) & mask;
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}
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static inline uint64_t
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__gen_unpack_sint(const uint8_t *restrict cl, uint32_t start, uint32_t end)
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{
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int size = end - start + 1;
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int64_t val = __gen_unpack_uint(cl, start, end);
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/* Get the sign bit extended. */
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return (val << (64 - size)) >> (64 - size);
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}
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#define pan_pack(dst, T, name) \
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for (struct MALI_ ## T name = { MALI_ ## T ## _header }, \
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*_loop_terminate = (void *) (dst); \
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__builtin_expect(_loop_terminate != NULL, 1); \
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({ MALI_ ## T ## _pack((uint32_t *) (dst), &name); \
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_loop_terminate = NULL; }))
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"""
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def to_alphanum(name):
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substitutions = {
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' ': '_',
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'/': '_',
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'[': '',
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']': '',
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'(': '',
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')': '',
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'-': '_',
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':': '',
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'.': '',
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',': '',
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'=': '',
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'>': '',
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'#': '',
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'&': '',
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'*': '',
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'"': '',
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'+': '',
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'\'': '',
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}
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for i, j in substitutions.items():
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name = name.replace(i, j)
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return name
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def safe_name(name):
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name = to_alphanum(name)
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if not name[0].isalpha():
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name = '_' + name
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return name
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def prefixed_upper_name(prefix, name):
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if prefix:
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name = prefix + "_" + name
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return safe_name(name).upper()
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def enum_name(name):
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return "{}_{}".format(global_prefix, safe_name(name)).lower()
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def num_from_str(num_str):
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if num_str.lower().startswith('0x'):
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return int(num_str, base=16)
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else:
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assert(not num_str.startswith('0') and 'octals numbers not allowed')
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return int(num_str)
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MODIFIERS = ["shr", "minus"]
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def parse_modifier(modifier):
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if modifier is None:
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return None
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for mod in MODIFIERS:
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if modifier[0:len(mod)] == mod and modifier[len(mod)] == '(' and modifier[-1] == ')':
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return [mod, int(modifier[(len(mod) + 1):-1])]
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print("Invalid modifier")
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assert(False)
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class Field(object):
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def __init__(self, parser, attrs):
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self.parser = parser
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if "name" in attrs:
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self.name = safe_name(attrs["name"]).lower()
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self.human_name = attrs["name"]
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if ":" in str(attrs["start"]):
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(word, bit) = attrs["start"].split(":")
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self.start = (int(word) * 32) + int(bit)
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else:
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self.start = int(attrs["start"])
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self.end = self.start + int(attrs["size"]) - 1
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self.type = attrs["type"]
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if self.type == 'bool' and self.start != self.end:
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print("#error Field {} has bool type but more than one bit of size".format(self.name));
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if "prefix" in attrs:
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self.prefix = safe_name(attrs["prefix"]).upper()
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else:
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self.prefix = None
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if "exact" in attrs:
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self.exact = int(attrs["exact"])
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else:
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self.exact = None
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self.default = attrs.get("default")
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# Map enum values
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if self.type in self.parser.enums and self.default is not None:
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self.default = safe_name('{}_{}_{}'.format(global_prefix, self.type, self.default)).upper()
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self.modifier = parse_modifier(attrs.get("modifier"))
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def emit_template_struct(self, dim):
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if self.type == 'address':
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type = 'uint64_t'
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elif self.type == 'bool':
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type = 'bool'
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elif self.type == 'float':
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type = 'float'
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elif self.type == 'uint' and self.end - self.start > 32:
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type = 'uint64_t'
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elif self.type == 'int':
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type = 'int32_t'
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elif self.type == 'uint':
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type = 'uint32_t'
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elif self.type in self.parser.structs:
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type = 'struct ' + self.parser.gen_prefix(safe_name(self.type.upper()))
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elif self.type in self.parser.enums:
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type = 'enum ' + enum_name(self.type)
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else:
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print("#error unhandled type: %s" % self.type)
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type = "uint32_t"
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print(" %-36s %s%s;" % (type, self.name, dim))
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for value in self.values:
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name = prefixed_upper_name(self.prefix, value.name)
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print("#define %-40s %d" % (name, value.value))
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def overlaps(self, field):
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return self != field and max(self.start, field.start) <= min(self.end, field.end)
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class Group(object):
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def __init__(self, parser, parent, start, count):
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self.parser = parser
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self.parent = parent
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self.start = start
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self.count = count
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self.size = 0
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self.length = 0
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self.fields = []
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def emit_template_struct(self, dim):
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if self.count == 0:
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print(" /* variable length fields follow */")
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else:
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if self.count > 1:
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dim = "%s[%d]" % (dim, self.count)
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for field in self.fields:
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if field.exact is not None:
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continue
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field.emit_template_struct(dim)
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class Word:
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def __init__(self):
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self.size = 32
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self.fields = []
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def collect_words(self, words):
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for field in self.fields:
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first_word = field.start // 32
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last_word = field.end // 32
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for b in range(first_word, last_word + 1):
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if not b in words:
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words[b] = self.Word()
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words[b].fields.append(field)
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def emit_pack_function(self):
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# Determine number of bytes in this group.
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calculated = max(field.end // 8 for field in self.fields) + 1
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if self.length > 0:
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assert(self.length >= calculated)
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else:
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self.length = calculated
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words = {}
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self.collect_words(words)
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emitted_structs = set()
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# Validate the modifier is lossless
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for field in self.fields:
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if field.modifier is None:
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continue
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assert(field.exact is None)
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if field.modifier[0] == "shr":
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shift = field.modifier[1]
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mask = hex((1 << shift) - 1)
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print(" assert((values->{} & {}) == 0);".format(field.name, mask))
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elif field.modifier[0] == "minus":
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print(" assert(values->{} >= {});".format(field.name, field.modifier[1]))
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for index in range(self.length // 4):
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# Handle MBZ words
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if not index in words:
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print(" cl[%2d] = 0;" % index)
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continue
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word = words[index]
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word_start = index * 32
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v = None
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prefix = " cl[%2d] =" % index
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first = word.fields[0]
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if first.type in self.parser.structs and first.start not in emitted_structs:
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pack_name = self.parser.gen_prefix(safe_name(first.type.upper()))
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start = first.start
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assert((first.start % 32) == 0)
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assert(first.end == first.start + (self.parser.structs[first.type].length * 8) - 1)
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print(" {}_pack(cl + {}, &values->{});".format(pack_name, first.start // 32, first.name))
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emitted_structs.add(first.start)
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for field in word.fields:
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name = field.name
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start = field.start
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end = field.end
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field_word_start = (field.start // 32) * 32
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start -= field_word_start
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end -= field_word_start
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value = str(field.exact) if field.exact is not None else "values->%s" % name
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if field.modifier is not None:
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if field.modifier[0] == "shr":
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value = "{} >> {}".format(value, field.modifier[1])
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elif field.modifier[0] == "minus":
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value = "{} - {}".format(value, field.modifier[1])
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if field.type == "uint" or field.type == "address":
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s = "__gen_uint(%s, %d, %d)" % \
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(value, start, end)
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elif field.type in self.parser.enums:
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s = "__gen_uint(%s, %d, %d)" % \
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(value, start, end)
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elif field.type == "int":
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s = "__gen_sint(%s, %d, %d)" % \
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(value, start, end)
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elif field.type == "bool":
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s = "__gen_uint(%s, %d, %d)" % \
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(value, start, end)
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elif field.type == "float":
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assert(start == 0 and end == 31)
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s = "__gen_uint(fui({}), 0, 32)".format(value)
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elif field.type in self.parser.structs:
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# Structs are packed directly
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assert(len(word.fields) == 1)
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continue
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else:
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s = "#error unhandled field {}, type {}".format(name, field.type)
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if not s == None:
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shift = word_start - field_word_start
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if shift:
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s = "%s >> %d" % (s, shift)
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if field == word.fields[-1]:
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print("%s %s;" % (prefix, s))
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else:
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print("%s %s |" % (prefix, s))
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prefix = " "
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continue
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# Given a field (start, end) contained in word `index`, generate the 32-bit
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# mask of present bits relative to the word
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||||||
|
def mask_for_word(self, index, start, end):
|
||||||
|
field_word_start = index * 32
|
||||||
|
start -= field_word_start
|
||||||
|
end -= field_word_start
|
||||||
|
# Cap multiword at one word
|
||||||
|
start = max(start, 0)
|
||||||
|
end = min(end, 32 - 1)
|
||||||
|
count = (end - start + 1)
|
||||||
|
return (((1 << count) - 1) << start)
|
||||||
|
|
||||||
|
def emit_unpack_function(self):
|
||||||
|
# First, verify there is no garbage in unused bits
|
||||||
|
words = {}
|
||||||
|
self.collect_words(words)
|
||||||
|
|
||||||
|
for index in range(self.length // 4):
|
||||||
|
base = index * 32
|
||||||
|
word = words.get(index, self.Word())
|
||||||
|
masks = [self.mask_for_word(index, f.start, f.end) for f in word.fields]
|
||||||
|
mask = reduce(lambda x,y: x | y, masks, 0)
|
||||||
|
|
||||||
|
ALL_ONES = 0xffffffff
|
||||||
|
|
||||||
|
if mask != ALL_ONES:
|
||||||
|
TMPL = ' if (((const uint32_t *) cl)[{}] & {}) fprintf(stderr, "XXX: Invalid field unpacked at word {}\\n");'
|
||||||
|
print(TMPL.format(index, hex(mask ^ ALL_ONES), index))
|
||||||
|
|
||||||
|
for field in self.fields:
|
||||||
|
# Recurse for structs, see pack() for validation
|
||||||
|
if field.type in self.parser.structs:
|
||||||
|
pack_name = self.parser.gen_prefix(safe_name(field.type)).upper()
|
||||||
|
print(" {}_unpack(cl + {}, &values->{});".format(pack_name, field.start // 32, field.name))
|
||||||
|
continue
|
||||||
|
|
||||||
|
convert = None
|
||||||
|
|
||||||
|
args = []
|
||||||
|
args.append('cl')
|
||||||
|
args.append(str(field.start))
|
||||||
|
args.append(str(field.end))
|
||||||
|
|
||||||
|
if field.type in set(["uint", "address"]) | self.parser.enums:
|
||||||
|
convert = "__gen_unpack_uint"
|
||||||
|
elif field.type == "int":
|
||||||
|
convert = "__gen_unpack_sint"
|
||||||
|
elif field.type == "bool":
|
||||||
|
convert = "__gen_unpack_uint"
|
||||||
|
elif field.type == "float":
|
||||||
|
convert = "__gen_unpack_float"
|
||||||
|
else:
|
||||||
|
s = "/* unhandled field %s, type %s */\n" % (field.name, field.type)
|
||||||
|
|
||||||
|
suffix = ""
|
||||||
|
if field.modifier:
|
||||||
|
if field.modifier[0] == "minus":
|
||||||
|
suffix = " + {}".format(field.modifier[1])
|
||||||
|
elif field.modifier[0] == "shr":
|
||||||
|
suffix = " << {}".format(field.modifier[1])
|
||||||
|
|
||||||
|
decoded = '{}({}){}'.format(convert, ', '.join(args), suffix)
|
||||||
|
|
||||||
|
print(' values->{} = {};'.format(field.name, decoded))
|
||||||
|
|
||||||
|
def emit_print_function(self):
|
||||||
|
for field in self.fields:
|
||||||
|
convert = None
|
||||||
|
name, val = field.human_name, 'values->{}'.format(field.name)
|
||||||
|
|
||||||
|
if field.type in self.parser.structs:
|
||||||
|
pack_name = self.parser.gen_prefix(safe_name(field.type)).upper()
|
||||||
|
print(' fprintf(fp, "%*s{}:\\n", indent, "");'.format(field.human_name))
|
||||||
|
print(" {}_print(fp, &values->{}, indent + 2);".format(pack_name, field.name))
|
||||||
|
elif field.type == "address":
|
||||||
|
# TODO resolve to name
|
||||||
|
print(' fprintf(fp, "%*s{}: 0x%" PRIx64 "\\n", indent, "", {});'.format(name, val))
|
||||||
|
elif field.type in self.parser.enums:
|
||||||
|
print(' fprintf(fp, "%*s{}: %s\\n", indent, "", {}_as_str({}));'.format(name, enum_name(field.type), val))
|
||||||
|
elif field.type == "int":
|
||||||
|
print(' fprintf(fp, "%*s{}: %d\\n", indent, "", {});'.format(name, val))
|
||||||
|
elif field.type == "bool":
|
||||||
|
print(' fprintf(fp, "%*s{}: %s\\n", indent, "", {} ? "true" : "false");'.format(name, val))
|
||||||
|
elif field.type == "float":
|
||||||
|
print(' fprintf(fp, "%*s{}: %f\\n", indent, "", {});'.format(name, val))
|
||||||
|
elif field.type == "uint" and (field.end - field.start) >= 32:
|
||||||
|
print(' fprintf(fp, "%*s{}: 0x%" PRIx64 "\\n", indent, "", {});'.format(name, val))
|
||||||
|
else:
|
||||||
|
print(' fprintf(fp, "%*s{}: %u\\n", indent, "", {});'.format(name, val))
|
||||||
|
|
||||||
|
class Value(object):
|
||||||
|
def __init__(self, attrs):
|
||||||
|
self.name = attrs["name"]
|
||||||
|
self.value = int(attrs["value"])
|
||||||
|
|
||||||
|
class Parser(object):
|
||||||
|
def __init__(self):
|
||||||
|
self.parser = xml.parsers.expat.ParserCreate()
|
||||||
|
self.parser.StartElementHandler = self.start_element
|
||||||
|
self.parser.EndElementHandler = self.end_element
|
||||||
|
|
||||||
|
self.struct = None
|
||||||
|
self.structs = {}
|
||||||
|
# Set of enum names we've seen.
|
||||||
|
self.enums = set()
|
||||||
|
|
||||||
|
def gen_prefix(self, name):
|
||||||
|
return '{}_{}'.format(global_prefix.upper(), name)
|
||||||
|
|
||||||
|
def start_element(self, name, attrs):
|
||||||
|
if name == "panxml":
|
||||||
|
print(pack_header)
|
||||||
|
elif name == "struct":
|
||||||
|
name = attrs["name"]
|
||||||
|
|
||||||
|
object_name = self.gen_prefix(safe_name(name.upper()))
|
||||||
|
self.struct = object_name
|
||||||
|
|
||||||
|
self.group = Group(self, None, 0, 1)
|
||||||
|
if "size" in attrs:
|
||||||
|
self.group.length = int(attrs["size"]) * 4
|
||||||
|
self.structs[attrs["name"]] = self.group
|
||||||
|
elif name == "field":
|
||||||
|
self.group.fields.append(Field(self, attrs))
|
||||||
|
self.values = []
|
||||||
|
elif name == "enum":
|
||||||
|
self.values = []
|
||||||
|
self.enum = safe_name(attrs["name"])
|
||||||
|
self.enums.add(attrs["name"])
|
||||||
|
if "prefix" in attrs:
|
||||||
|
self.prefix = attrs["prefix"]
|
||||||
|
else:
|
||||||
|
self.prefix= None
|
||||||
|
elif name == "value":
|
||||||
|
self.values.append(Value(attrs))
|
||||||
|
|
||||||
|
def end_element(self, name):
|
||||||
|
if name == "struct":
|
||||||
|
self.emit_struct()
|
||||||
|
self.struct = None
|
||||||
|
self.group = None
|
||||||
|
elif name == "field":
|
||||||
|
self.group.fields[-1].values = self.values
|
||||||
|
elif name == "enum":
|
||||||
|
self.emit_enum()
|
||||||
|
self.enum = None
|
||||||
|
elif name == "panxml":
|
||||||
|
# Include at the end so it can depend on us but not the converse
|
||||||
|
print('#include "panfrost-job.h"')
|
||||||
|
print('#endif')
|
||||||
|
|
||||||
|
def emit_header(self, name):
|
||||||
|
default_fields = []
|
||||||
|
for field in self.group.fields:
|
||||||
|
if not type(field) is Field:
|
||||||
|
continue
|
||||||
|
if field.default == None:
|
||||||
|
continue
|
||||||
|
default_fields.append(" .{} = {}".format(field.name, field.default))
|
||||||
|
|
||||||
|
print('#define %-40s\\' % (name + '_header'))
|
||||||
|
print(", \\\n".join(default_fields))
|
||||||
|
print('')
|
||||||
|
|
||||||
|
def emit_template_struct(self, name, group):
|
||||||
|
print("struct %s {" % name)
|
||||||
|
group.emit_template_struct("")
|
||||||
|
print("};\n")
|
||||||
|
|
||||||
|
def emit_pack_function(self, name, group):
|
||||||
|
print("static inline void\n%s_pack(uint32_t * restrict cl,\n%sconst struct %s * restrict values)\n{" %
|
||||||
|
(name, ' ' * (len(name) + 6), name))
|
||||||
|
|
||||||
|
group.emit_pack_function()
|
||||||
|
|
||||||
|
print("}\n")
|
||||||
|
|
||||||
|
# Should be a whole number of words
|
||||||
|
assert((self.group.length % 4) == 0)
|
||||||
|
|
||||||
|
print('#define {} {}'.format (name + "_LENGTH", self.group.length))
|
||||||
|
print('struct {}_packed {{ uint32_t opaque[{}]; }};'.format(name.lower(), self.group.length // 4))
|
||||||
|
|
||||||
|
def emit_unpack_function(self, name, group):
|
||||||
|
print("static inline void")
|
||||||
|
print("%s_unpack(const uint8_t * restrict cl,\n%sstruct %s * restrict values)\n{" %
|
||||||
|
(name.upper(), ' ' * (len(name) + 8), name))
|
||||||
|
|
||||||
|
group.emit_unpack_function()
|
||||||
|
|
||||||
|
print("}\n")
|
||||||
|
|
||||||
|
def emit_print_function(self, name, group):
|
||||||
|
print("static inline void")
|
||||||
|
print("{}_print(FILE *fp, const struct {} * values, unsigned indent)\n{{".format(name.upper(), name))
|
||||||
|
|
||||||
|
group.emit_print_function()
|
||||||
|
|
||||||
|
print("}\n")
|
||||||
|
|
||||||
|
def emit_struct(self):
|
||||||
|
name = self.struct
|
||||||
|
|
||||||
|
self.emit_template_struct(self.struct, self.group)
|
||||||
|
self.emit_header(name)
|
||||||
|
self.emit_pack_function(self.struct, self.group)
|
||||||
|
self.emit_unpack_function(self.struct, self.group)
|
||||||
|
self.emit_print_function(self.struct, self.group)
|
||||||
|
|
||||||
|
def emit_enum(self):
|
||||||
|
e_name = enum_name(self.enum)
|
||||||
|
print('enum {} {{'.format(e_name))
|
||||||
|
for value in self.values:
|
||||||
|
name = '{}_{}'.format(e_name, value.name)
|
||||||
|
name = safe_name(name).upper()
|
||||||
|
print(' % -36s = %6d,' % (name, value.value))
|
||||||
|
print('};\n')
|
||||||
|
|
||||||
|
print("static inline const char *")
|
||||||
|
print("{}_as_str(enum {} imm)\n{{".format(e_name.lower(), e_name))
|
||||||
|
print(" switch (imm) {")
|
||||||
|
for value in self.values:
|
||||||
|
name = '{}_{}'.format(e_name, value.name)
|
||||||
|
name = safe_name(name).upper()
|
||||||
|
print(' case {}: return "{}";'.format(name, value.name))
|
||||||
|
print(' default: return "XXX: INVALID";')
|
||||||
|
print(" }")
|
||||||
|
print("}\n")
|
||||||
|
|
||||||
|
def parse(self, filename):
|
||||||
|
file = open(filename, "rb")
|
||||||
|
self.parser.ParseFile(file)
|
||||||
|
file.close()
|
||||||
|
|
||||||
|
if len(sys.argv) < 2:
|
||||||
|
print("No input xml file specified")
|
||||||
|
sys.exit(1)
|
||||||
|
|
||||||
|
input_file = sys.argv[1]
|
||||||
|
|
||||||
|
p = Parser()
|
||||||
|
p.parse(input_file)
|
Loading…
Reference in New Issue