| 1 | #!/usr/bin/env python
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| 2 |
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| 3 | import sys
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| 4 | import json
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| 5 | import re
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| 6 |
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| 7 | def usage():
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| 8 | print("%s - Automated structure and offsets generator" % sys.argv[0])
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| 9 | print("%s file.ag probe|generate struct.ag" % sys.argv[0])
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| 10 | sys.exit()
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| 11 |
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| 12 | def generate_includes(struct):
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| 13 | code = ""
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| 14 | for i in range(len(struct['includes'])):
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| 15 | code = code + "#include %s\n" % struct['includes'][i]
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| 16 | return code.strip()
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| 17 |
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| 18 | def generate_struct(struct):
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| 19 | code = "typedef struct %s {\n" % struct['name']
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| 20 | for i in range(len(struct['members'])):
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| 21 | member = struct['members'][i]
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| 22 | code = code + "\t%s %s;\n" % (member['type'], member['name'])
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| 23 | code = code + "} %s_t;" % struct['name']
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| 24 | return code
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| 25 |
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| 26 | def generate_probes(struct):
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| 27 | code = ""
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| 28 | for i in range(len(struct['members'])):
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| 29 | member = struct['members'][i]
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| 30 | code = code + ("\temit_constant(OFFSET_%s, offsetof(%s_t, %s));\n" %
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| 31 | (member['name'].upper(), struct['name'], member['name']))
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| 32 | return code
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| 33 |
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| 34 | def probe(struct):
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| 35 | name = struct['name']
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| 36 | typename = struct['name'] + "_t"
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| 37 |
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| 38 | code = """
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| 39 | %s
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| 40 |
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| 41 | #define str(s) #s
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| 42 | #define emit_constant(n, v) \
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| 43 | asm volatile ("EMITTED_CONSTANT " str(n) \" = %%0\" :: \"i\" (v))
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| 44 | #define offsetof(t, m) ((size_t) &(((t *) 0)->m))
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| 45 |
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| 46 | %s
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| 47 |
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| 48 | int main()
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| 49 | {
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| 50 | %s
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| 51 | emit_constant(%s_SIZE, sizeof(%s));
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| 52 | return 0;
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| 53 | }
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| 54 | """ % (generate_includes(struct), generate_struct(struct),
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| 55 | generate_probes(struct), name.upper(), typename)
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| 56 |
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| 57 | return code
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| 58 |
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| 59 | def generate_defines(pairs):
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| 60 | code = ""
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| 61 | for pair in pairs:
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| 62 | code = code + "#define %s %s\n" % (pair[0], pair[1])
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| 63 | return code.strip()
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| 64 |
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| 65 | def generate(struct, lines):
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| 66 | code = """
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| 67 | /*****************************************************************************
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| 68 | * AUTO-GENERATED FILE, DO NOT EDIT!!!
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| 69 | * Generated by: tools/autogen.py
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| 70 | * Generated from: %s
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| 71 | *****************************************************************************/
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| 72 |
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| 73 | #ifndef AUTOGEN_%s_H
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| 74 | #define AUTOGEN_%s_H
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| 75 |
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| 76 | #ifndef __ASM__
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| 77 | %s
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| 78 | #endif
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| 79 |
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| 80 | %s
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| 81 |
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| 82 | #ifndef __ASM__
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| 83 | %s
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| 84 | #endif
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| 85 |
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| 86 | #endif
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| 87 | """ % (sys.argv[2], struct['name'].upper(), struct['name'].upper(),
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| 88 | generate_includes(struct), generate_defines(lines),
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| 89 | generate_struct(struct))
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| 90 |
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| 91 | return code
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| 92 |
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| 93 | def filter_pairs(lines):
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| 94 | pattern = re.compile("^\tEMITTED_CONSTANT ([A-Z_]*) = \$([0-9]*)$");
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| 95 | pairs = []
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| 96 | for line in lines:
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| 97 | res = pattern.match(line)
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| 98 | if res == None:
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| 99 | continue
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| 100 | pairs = pairs + [res.group(1, 2)]
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| 101 | return pairs
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| 102 |
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| 103 |
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| 104 | def run():
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| 105 | if len(sys.argv) != 3:
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| 106 | usage()
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| 107 |
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| 108 | with open(sys.argv[2], "rb") as fp:
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| 109 | struct = json.load(fp)
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| 110 |
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| 111 | if sys.argv[1] == "probe":
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| 112 | code = probe(struct)
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| 113 | print(code)
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| 114 | elif sys.argv[1] == "generate":
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| 115 | lines = sys.stdin.readlines()
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| 116 | pairs = filter_pairs(lines)
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| 117 | code = generate(struct, pairs)
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| 118 | print(code)
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| 119 | else:
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| 120 | usage()
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| 121 |
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| 122 | run()
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| 123 |
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