exec/cpu-all: remove BSWAP_NEEDED

This identifier is poisoned, so it can't be used from common code
anyway. We replace all occurrences with its definition directly.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Link: https://lore.kernel.org/r/20250320223002.2915728-2-pierrick.bouvier@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

bsd-user/elfload.c

@@ -44,7 +44,7 @@ static inline void memcpy_fromfs(void *to, const void *from, unsigned long n)
     memcpy(to, from, n);
 }
 
-#ifdef BSWAP_NEEDED
+#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
 static void bswap_ehdr(struct elfhdr *ehdr)
 {
     bswap16s(&ehdr->e_type);            /* Object file type */
@@ -111,7 +111,7 @@ static void bswap_note(struct elf_note *en)
     bswap32s(&en->n_type);
 }
 
-#else /* ! BSWAP_NEEDED */
+#else
 
 static void bswap_ehdr(struct elfhdr *ehdr) { }
 static void bswap_phdr(struct elf_phdr *phdr, int phnum) { }
@@ -119,7 +119,7 @@ static void bswap_shdr(struct elf_shdr *shdr, int shnum) { }
 static void bswap_sym(struct elf_sym *sym) { }
 static void bswap_note(struct elf_note *en) { }
 
-#endif /* ! BSWAP_NEEDED */
+#endif /* HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN */
 
 #include "elfcore.c"
 

include/exec/cpu-all.h

@@ -26,18 +26,6 @@
 #include "exec/tswap.h"
 #include "hw/core/cpu.h"
 
-/* some important defines:
- *
- * HOST_BIG_ENDIAN : whether the host cpu is big endian and
- * otherwise little endian.
- *
- * TARGET_BIG_ENDIAN : same for the target cpu
- */
-
-#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
-#define BSWAP_NEEDED
-#endif
-
 /* Target-endianness CPU memory access functions. These fit into the
  * {ld,st}{type}{sign}{size}{endian}_p naming scheme described in bswap.h.
  */

include/exec/poison.h

@@ -37,7 +37,6 @@
 #pragma GCC poison TARGET_NAME
 #pragma GCC poison TARGET_SUPPORTS_MTTCG
 #pragma GCC poison TARGET_BIG_ENDIAN
-#pragma GCC poison BSWAP_NEEDED
 
 #pragma GCC poison TARGET_LONG_BITS
 #pragma GCC poison TARGET_FMT_lx

linux-user/elfload.c

@@ -2121,7 +2121,7 @@ static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
     memcpy(to, from, n);
 }
 
-#ifdef BSWAP_NEEDED
+#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
 static void bswap_ehdr(struct elfhdr *ehdr)
 {
     bswap16s(&ehdr->e_type);            /* Object file type */
@@ -3143,7 +3143,7 @@ static bool parse_elf_properties(const ImageSource *src,
      * The contents of a valid PT_GNU_PROPERTY is a sequence of uint32_t.
      * Swap most of them now, beyond the header and namesz.
      */
-#ifdef BSWAP_NEEDED
+#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
     for (int i = 4; i < n / 4; i++) {
         bswap32s(note.data + i);
     }
@@ -3999,7 +3999,7 @@ struct target_elf_prpsinfo {
     char    pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
 };
 
-#ifdef BSWAP_NEEDED
+#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
 static void bswap_prstatus(struct target_elf_prstatus *prstatus)
 {
     prstatus->pr_info.si_signo = tswap32(prstatus->pr_info.si_signo);
@@ -4038,7 +4038,7 @@ static void bswap_note(struct elf_note *en)
 static inline void bswap_prstatus(struct target_elf_prstatus *p) { }
 static inline void bswap_psinfo(struct target_elf_prpsinfo *p) {}
 static inline void bswap_note(struct elf_note *en) { }
-#endif /* BSWAP_NEEDED */
+#endif /* HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN */
 
 /*
  * Calculate file (dump) size of given memory region.

linux-user/syscall_defs.h

@@ -462,7 +462,7 @@ typedef struct {
     abi_ulong sig[TARGET_NSIG_WORDS];
 } target_sigset_t;
 
-#ifdef BSWAP_NEEDED
+#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
 static inline void tswap_sigset(target_sigset_t *d, const target_sigset_t *s)
 {
     int i;