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Prefix zfs internal endian checks with _ZFS

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FreeBSD defines _BIG_ENDIAN BIG_ENDIAN _LITTLE_ENDIAN
LITTLE_ENDIAN on every architecture. Trying to do
cross builds whilst hiding this from ZFS has proven
extremely cumbersome.

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #10621
This commit is contained in:
Matthew Macy
2020-07-28 13:02:49 -07:00
committed by GitHub
parent 3eabed74c0
commit 5678d3f593
23 changed files with 99 additions and 240 deletions
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lib/libspl/include/os/freebsd/sys/byteorder.h
+4 -123
View File
@@ -40,91 +40,8 @@
#ifndef _SYS_BYTEORDER_H
#define _SYS_BYTEORDER_H
/*
* XXX FIXME
* on FreeBSD _BIG_ENDIAN is defined on all architectures so we have
* to exclude _MACHINE_ENDIAN_H_ and define the bulk of it here
*/
#include <sys/cdefs.h>
#include <sys/_types.h>
/*
* Define the order of 32-bit words in 64-bit words.
*/
#define _QUAD_HIGHWORD 1
#define _QUAD_LOWWORD 0
/*
* Definitions for byte order, according to byte significance from low
* address to high.
*/
#undef _LITTLE_ENDIAN
/* LSB first: i386, vax */
#define _LITTLE_ENDIAN 1234
/* LSB first in word, MSW first in long */
#define _PDP_ENDIAN 3412
#define _BYTE_ORDER _LITTLE_ENDIAN
/*
* Deprecated variants that don't have enough underscores to be useful in more
* strict namespaces.
*/
#if __BSD_VISIBLE
#define LITTLE_ENDIAN _LITTLE_ENDIAN
#define PDP_ENDIAN _PDP_ENDIAN
#define BYTE_ORDER _BYTE_ORDER
#endif
#define __bswap16_gen(x) (__uint16_t)((x) << 8 | (x) >> 8)
#define __bswap32_gen(x) \
(((__uint32_t)__bswap16((x) & 0xffff) << 16) | __bswap16((x) >> 16))
#define __bswap64_gen(x) \
(((__uint64_t)__bswap32((x) & 0xffffffff) << 32) | __bswap32((x) >> 32))
#ifdef __GNUCLIKE_BUILTIN_CONSTANT_P
#define __bswap16(x) \
((__uint16_t)(__builtin_constant_p(x) ? \
__bswap16_gen((__uint16_t)(x)) : __bswap16_var(x)))
#define __bswap32(x) \
(__builtin_constant_p(x) ? \
__bswap32_gen((__uint32_t)(x)) : __bswap32_var(x))
#define __bswap64(x) \
(__builtin_constant_p(x) ? \
__bswap64_gen((__uint64_t)(x)) : __bswap64_var(x))
#else
/* XXX these are broken for use in static initializers. */
#define __bswap16(x) __bswap16_var(x)
#define __bswap32(x) __bswap32_var(x)
#define __bswap64(x) __bswap64_var(x)
#endif
/* These are defined as functions to avoid multiple evaluation of x. */
static __inline __uint16_t
__bswap16_var(__uint16_t _x)
{
return (__bswap16_gen(_x));
}
static __inline __uint32_t
__bswap32_var(__uint32_t _x)
{
#ifdef __GNUCLIKE_ASM
__asm("bswap %0" : "+r" (_x));
return (_x);
#else
return (__bswap32_gen(_x));
#endif
}
#define __htonl(x) __bswap32(x)
#define __htons(x) __bswap16(x)
#define __ntohl(x) __bswap32(x)
#define __ntohs(x) __bswap16(x)
#include <sys/endian.h>
#include <netinet/in.h>
#include <sys/isa_defs.h>
#include <sys/int_types.h>
@@ -140,42 +57,6 @@ extern "C" {
/*
* macros for conversion between host and (internet) network byte order
*/
#if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint)
/* big-endian */
#if defined(_BIG_ENDIAN) && (defined(__amd64__) || defined(__amd64))
#error "incompatible ENDIAN / ARCH combination"
#endif
#define ntohl(x) (x)
#define ntohs(x) (x)
#define htonl(x) (x)
#define htons(x) (x)
#elif !defined(ntohl) /* little-endian */
#ifndef _IN_PORT_T
#define _IN_PORT_T
typedef uint16_t in_port_t;
#endif
#ifndef _IN_ADDR_T
#define _IN_ADDR_T
typedef uint32_t in_addr_t;
#endif
#if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5)
extern uint32_t htonl(uint32_t);
extern uint16_t htons(uint16_t);
extern uint32_t ntohl(uint32_t);
extern uint16_t ntohs(uint16_t);
#else
extern in_addr_t htonl(in_addr_t);
extern in_port_t htons(in_port_t);
extern in_addr_t ntohl(in_addr_t);
extern in_port_t ntohs(in_port_t);
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) */
#endif
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
/*
@@ -194,7 +75,7 @@ extern in_port_t ntohs(in_port_t);
/*
* Macros to convert from a specific byte order to/from native byte order
*/
#ifdef _BIG_ENDIAN
#ifdef _ZFS_BIG_ENDIAN
#define BE_8(x) BMASK_8(x)
#define BE_16(x) BMASK_16(x)
#define BE_32(x) BMASK_32(x)
@@ -214,7 +95,7 @@ extern in_port_t ntohs(in_port_t);
#define BE_64(x) BSWAP_64(x)
#endif
#ifdef _BIG_ENDIAN
#ifdef _ZFS_BIG_ENDIAN
static __inline__ uint64_t
htonll(uint64_t n)
{
lib/libspl/include/os/freebsd/sys/zfs_context_os.h
-4
View File
@@ -29,10 +29,6 @@
#ifndef ZFS_CONTEXT_OS_H_
#define ZFS_CONTEXT_OS_H_
#if BYTE_ORDER != BIG_ENDIAN
#undef _BIG_ENDIAN
#endif
#define ZFS_EXPORTS_PATH "/etc/zfs/exports"
#endif