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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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12
tcg/tcg.c
View file

@ -51,7 +51,7 @@
#else
# define ELF_CLASS ELFCLASS64
#endif
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
# define ELF_DATA ELFDATA2MSB
#else
# define ELF_DATA ELFDATA2LSB
@ -883,7 +883,7 @@ TCGTemp *tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
TCGTemp *base_ts = tcgv_ptr_temp(base);
TCGTemp *ts = tcg_global_alloc(s);
int indirect_reg = 0, bigendian = 0;
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
bigendian = 1;
#endif
@ -1547,7 +1547,7 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args)
}
#else
if (TCG_TARGET_REG_BITS < 64 && (typemask & 6) == dh_typecode_i64) {
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
op->args[pi++] = temp_arg(ret + 1);
op->args[pi++] = temp_arg(ret);
#else
@ -1600,7 +1600,7 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args)
* have to get more complicated to differentiate between
* stack arguments and register arguments.
*/
#if defined(HOST_WORDS_BIGENDIAN) != defined(TCG_TARGET_STACK_GROWSUP)
#if HOST_BIG_ENDIAN != defined(TCG_TARGET_STACK_GROWSUP)
op->args[pi++] = temp_arg(args[i] + 1);
op->args[pi++] = temp_arg(args[i]);
#else
@ -3598,7 +3598,7 @@ static void tcg_reg_alloc_dup(TCGContext *s, const TCGOp *op)
/* fall through */
case TEMP_VAL_MEM:
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
endian_fixup = itype == TCG_TYPE_I32 ? 4 : 8;
endian_fixup -= 1 << vece;
#else
@ -3879,7 +3879,7 @@ static bool tcg_reg_alloc_dup2(TCGContext *s, const TCGOp *op)
if (!itsh->mem_coherent) {
temp_sync(s, itsh, s->reserved_regs, 0, 0);
}
#ifdef HOST_WORDS_BIGENDIAN
#if HOST_BIG_ENDIAN
TCGTemp *its = itsh;
#else
TCGTemp *its = itsl;