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Replace config-time define HOST_WORDS_BIGENDIAN

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Replace a config-time define with a compile time condition
define (compatible with clang and gcc) that must be declared prior to
its usage. This avoids having a global configure time define, but also
prevents from bad usage, if the config header wasn't included before.

This can help to make some code independent from qemu too.

gcc supports __BYTE_ORDER__ from about 4.6 and clang from 3.2.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[ For the s390x parts I'm involved in ]
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-7-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2022-03-23 19:57:17 +04:00 • committed by Paolo Bonzini
parent 3f6c2e8b79
commit e03b56863d
84 changed files with 173 additions and 174 deletions
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4
accel/kvm/kvm-all.c
View file

@ -1202,8 +1202,8 @@ void kvm_hwpoison_page_add(ram_addr_t ram_addr)
static uint32_t adjust_ioeventfd_endianness(uint32_t val, uint32_t size)
{
#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
/* The kernel expects ioeventfd values in HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN != defined(TARGET_WORDS_BIGENDIAN)
/* The kernel expects ioeventfd values in HOST_BIG_ENDIAN
* endianness, but the memory core hands them in target endianness.
* For example, PPC is always treated as big-endian even if running
* on KVM and on PPC64LE. Correct here.

4
accel/tcg/atomic_template.h
View file

@ -63,7 +63,7 @@
the ATOMIC_NAME macro, and redefined below. */
#if DATA_SIZE == 1
# define END
#elif defined(HOST_WORDS_BIGENDIAN)
#elif HOST_BIG_ENDIAN
# define END _be
#else
# define END _le
@ -196,7 +196,7 @@ GEN_ATOMIC_HELPER_FN(umax_fetch, MAX, DATA_TYPE, new)
/* Define reverse-host-endian atomic operations. Note that END is used
within the ATOMIC_NAME macro. */
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
# define END _le
#else
# define END _be