mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-19 04:30:02 +00:00
394d998315
At least in neovim, `│vi:` is not recognized as a modeline because it has no preceding whitespace. After fixing this, opening a file yields an error because `net` is not an option. (`noet`, however, is.)
52 lines
2.1 KiB
C
52 lines
2.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set noet ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Python 3 │
|
|
│ https://docs.python.org/3/license.html │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "third_party/python/Include/code.h"
|
|
|
|
/* This file contains code shared by the compiler and the peephole
|
|
optimizer.
|
|
*/
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
# define PACKOPARG(opcode, oparg) ((_Py_CODEUNIT)(((opcode) << 8) | (oparg)))
|
|
#else
|
|
# define PACKOPARG(opcode, oparg) ((_Py_CODEUNIT)(((oparg) << 8) | (opcode)))
|
|
#endif
|
|
|
|
/* Minimum number of code units necessary to encode instruction with
|
|
EXTENDED_ARGs */
|
|
static int
|
|
instrsize(unsigned int oparg)
|
|
{
|
|
return oparg <= 0xff ? 1 :
|
|
oparg <= 0xffff ? 2 :
|
|
oparg <= 0xffffff ? 3 :
|
|
4;
|
|
}
|
|
|
|
/* Spits out op/oparg pair using ilen bytes. codestr should be pointed at the
|
|
desired location of the first EXTENDED_ARG */
|
|
static void
|
|
write_op_arg(_Py_CODEUNIT *codestr, unsigned char opcode,
|
|
unsigned int oparg, int ilen)
|
|
{
|
|
switch (ilen) {
|
|
case 4:
|
|
*codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 24) & 0xff);
|
|
/* fall through */
|
|
case 3:
|
|
*codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 16) & 0xff);
|
|
/* fall through */
|
|
case 2:
|
|
*codestr++ = PACKOPARG(EXTENDED_ARG, (oparg >> 8) & 0xff);
|
|
/* fall through */
|
|
case 1:
|
|
*codestr++ = PACKOPARG(opcode, oparg & 0xff);
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|