1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
diff -ur lua-5.1.3-pt2/src/ldump.c lua-5.1.3-pt3/src/ldump.c
--- lua-5.1.3-pt2/src/ldump.c 2008-04-05 14:25:13.000000000 +0200
+++ lua-5.1.3-pt3/src/ldump.c 2008-04-05 14:28:27.000000000 +0200
@@ -67,12 +67,12 @@
{
if (s==NULL || getstr(s)==NULL)
{
- size_t size=0;
+ unsigned int size=0;
DumpVar(size,D);
}
else
{
- size_t size=s->tsv.len+1; /* include trailing '\0' */
+ unsigned int size=s->tsv.len+1; /* include trailing '\0' */
DumpVar(size,D);
DumpBlock(getstr(s),size,D);
}
diff -ur lua-5.1.3-pt2/src/lundump.c lua-5.1.3-pt3/src/lundump.c
--- lua-5.1.3-pt2/src/lundump.c 2008-04-05 14:25:13.000000000 +0200
+++ lua-5.1.3-pt3/src/lundump.c 2008-04-05 14:28:27.000000000 +0200
@@ -25,6 +25,7 @@
ZIO* Z;
Mbuffer* b;
const char* name;
+ int swap;
} LoadState;
#ifdef LUAC_TRUST_BINARIES
@@ -40,7 +41,6 @@
}
#endif
-#define LoadMem(S,b,n,size) LoadBlock(S,b,(n)*(size))
#define LoadByte(S) (lu_byte)LoadChar(S)
#define LoadVar(S,x) LoadMem(S,&x,1,sizeof(x))
#define LoadVector(S,b,n,size) LoadMem(S,b,n,size)
@@ -52,6 +52,49 @@
IF (r!=0, "unexpected end");
}
+static void LoadMem (LoadState* S, void* b, int n, size_t size)
+{
+ LoadBlock(S,b,n*size);
+ if (S->swap)
+ {
+ char* p=(char*) b;
+ char c;
+ switch (size)
+ {
+ case 1:
+ break;
+ case 2:
+ while (n--)
+ {
+ c=p[0]; p[0]=p[1]; p[1]=c;
+ p+=2;
+ }
+ break;
+ case 4:
+ while (n--)
+ {
+ c=p[0]; p[0]=p[3]; p[3]=c;
+ c=p[1]; p[1]=p[2]; p[2]=c;
+ p+=4;
+ }
+ break;
+ case 8:
+ while (n--)
+ {
+ c=p[0]; p[0]=p[7]; p[7]=c;
+ c=p[1]; p[1]=p[6]; p[6]=c;
+ c=p[2]; p[2]=p[5]; p[5]=c;
+ c=p[3]; p[3]=p[4]; p[4]=c;
+ p+=8;
+ }
+ break;
+ default:
+ IF(1, "bad size");
+ break;
+ }
+ }
+}
+
static int LoadChar(LoadState* S)
{
char x;
@@ -83,7 +126,7 @@
static TString* LoadString(LoadState* S)
{
- size_t size;
+ unsigned int size;
LoadVar(S,size);
if (size==0)
return NULL;
@@ -194,6 +237,7 @@
char s[LUAC_HEADERSIZE];
luaU_header(h);
LoadBlock(S,s,LUAC_HEADERSIZE);
+ S->swap=(s[6]!=h[6]); s[6]=h[6];
IF (memcmp(h,s,LUAC_HEADERSIZE)!=0, "bad header");
}
@@ -228,7 +272,7 @@
*h++=(char)LUAC_FORMAT;
*h++=(char)*(char*)&x; /* endianness */
*h++=(char)sizeof(int);
- *h++=(char)sizeof(size_t);
+ *h++=(char)sizeof(unsigned int);
*h++=(char)sizeof(Instruction);
*h++=(char)sizeof(lua_Number);
|
