cosmopolitan/libc/str/tpenc.h
Justine Tunney 9e3e985ae5 Make terminal ui binaries work well everywhere
Here's some screenshots of an emulator tui program that was compiled on
Linux, then scp'd it to Windows, Mac, and FreeBSD.

https://justine.storage.googleapis.com/blinkenlights-cmdexe.png
https://justine.storage.googleapis.com/blinkenlights-imac.png
https://justine.storage.googleapis.com/blinkenlights-freebsd.png
https://justine.storage.googleapis.com/blinkenlights-lisp.png

How is this even possible that we have a nontrivial ui binary that just
works on Mac, Windows, Linux, and BSD? Surely a first ever achievement.

Fixed many bugs. Bootstrapped John McCarthy's metacircular evaluator on
bare metal in half the size of Altair BASIC (about 2.5kb) and ran it in
emulator for fun and profit.
2020-10-19 06:38:31 -07:00

27 lines
817 B
C

#ifndef COSMOPOLITAN_LIBC_STR_TPENC_H_
#define COSMOPOLITAN_LIBC_STR_TPENC_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
uint64_t tpenc(int32_t) pureconst;
#ifndef __STRICT_ANSI__
#define tpenc(CODE) \
({ \
long Buf; \
int32_t Code = (CODE); \
if (0 <= Code && Code <= 127) { \
Buf = Code; \
} else { \
asm("call\ttpenc" \
: "=a"(Buf), "+D"(Code) \
: /* inputs */ \
: "rcx", "rdx", "cc"); \
} \
Buf; \
})
#endif
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_STR_TPENC_H_ */