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LibC: Bring the C library close enough to newlib to trick GCC.

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Now we can build GCC with --with-newlib, which hopefully cuts down on weird
toolchain build issues.
This commit is contained in:
Andreas Kling 2019-04-17 23:13:07 +02:00
parent c02c6fef28
commit 34087a9f90
5 changed files with 83 additions and 95 deletions
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27
LibC/ctype.cpp
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@ -1,16 +1,39 @@
#include <ctype.h>
#include <string.h>
int __tolower(int c)
extern "C" {
const char _ctype_[256] = {
_C, _C, _C, _C, _C, _C, _C, _C,
_C, _C|_S, _C|_S, _C|_S, _C|_S, _C|_S, _C, _C,
_C, _C, _C, _C, _C, _C, _C, _C,
_C, _C, _C, _C, _C, _C, _C, _C,
(char)(_S|_B), _P, _P, _P, _P, _P, _P, _P,
_P, _P, _P, _P, _P, _P, _P, _P,
_N, _N, _N, _N, _N, _N, _N, _N,
_N, _N, _P, _P, _P, _P, _P, _P,
_P, _U|_X, _U|_X, _U|_X, _U|_X, _U|_X, _U|_X, _U,
_U, _U, _U, _U, _U, _U, _U, _U,
_U, _U, _U, _U, _U, _U, _U, _U,
_U, _U, _U, _P, _P, _P, _P, _P,
_P, _L|_X, _L|_X, _L|_X, _L|_X, _L|_X, _L|_X, _L,
_L, _L, _L, _L, _L, _L, _L, _L,
_L, _L, _L, _L, _L, _L, _L, _L,
_L, _L, _L, _P, _P, _P, _P, _C
};
int tolower(int c)
{
if (c >= 'A' && c <= 'Z')
return c | 0x20;
return c;
}
int __toupper(int c)
int toupper(int c)
{
if (c >= 'a' && c <= 'z')
return c & ~0x20;
return c;
}
}