projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 808d2265 KB |
1 | /*- |
| 2 | * Copyright (c) 1991 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Ralph Campbell. | |
| 7 | * | |
| 8 | * %sccs.include.redist.c% | |
| 9 | */ | |
| 10 | ||
| 073522ce | 11 | #include <machine/machAsmDefs.h> |
| f1e99c02 | 12 | |
| 808d2265 | 13 | #if defined(LIBC_SCCS) && !defined(lint) |
| 073522ce | 14 | ASMSTR("@(#)htonl.s 5.4 (Berkeley) %G%") |
| 808d2265 KB |
15 | #endif /* LIBC_SCCS and not lint */ |
| 16 | ||
| 3efc1bf9 RC |
17 | #include <machine/endian.h> |
| 18 | #undef htonl | |
| 19 | #undef ntohl | |
| 20 | ||
| 808d2265 KB |
21 | /* |
| 22 | * netorder = htonl(hostorder) | |
| 23 | * hostorder = ntohl(netorder) | |
| 24 | */ | |
| 25 | LEAF(htonl) # a0 = 0x11223344, return 0x44332211 | |
| 26 | ALEAF(ntohl) | |
| 3efc1bf9 | 27 | #if BYTE_ORDER == LITTLE_ENDIAN |
| 808d2265 KB |
28 | srl v1, a0, 24 # v1 = 0x00000011 |
| 29 | sll v0, a0, 24 # v0 = 0x44000000 | |
| 30 | or v0, v0, v1 | |
| 31 | and v1, a0, 0xff00 | |
| 32 | sll v1, v1, 8 # v1 = 0x00330000 | |
| 33 | or v0, v0, v1 | |
| 34 | srl v1, a0, 8 | |
| 35 | and v1, v1, 0xff00 # v1 = 0x00002200 | |
| 36 | or v0, v0, v1 | |
| 3efc1bf9 RC |
37 | #else |
| 38 | #if BYTE_ORDER == BIG_ENDIAN | |
| 39 | move v0, a0 | |
| 40 | #else | |
| 41 | ERROR | |
| 42 | #endif | |
| 43 | #endif | |
| 808d2265 KB |
44 | j ra |
| 45 | END(htonl) |