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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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2
target/i386/cpu.h
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@ -1248,7 +1248,7 @@ typedef struct BNDCSReg {
#define BNDCFG_BNDPRESERVE 2ULL
#define BNDCFG_BDIR_MASK TARGET_PAGE_MASK
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
#define ZMM_B(n) _b_ZMMReg[63 - (n)]
#define ZMM_W(n) _w_ZMMReg[31 - (n)]
#define ZMM_L(n) _l_ZMMReg[15 - (n)]

2
target/i386/tcg/translate.c
View file

@ -359,7 +359,7 @@ static void gen_update_cc_op(DisasContext *s)
#endif /* !TARGET_X86_64 */
#if defined(HOST_WORDS_BIGENDIAN)
#if HOST_BIG_ENDIAN
#define REG_B_OFFSET (sizeof(target_ulong) - 1)
#define REG_H_OFFSET (sizeof(target_ulong) - 2)
#define REG_W_OFFSET (sizeof(target_ulong) - 2)