motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target/mips: Check CPU endianness at runtime using env_is_bigendian()

Browse source 
Since CPU endianness can be toggled at runtime before resetting,
checking the endianness at build time preprocessing the
TARGET_BIG_ENDIAN definition isn't correct. We have to call
mips_env_is_bigendian() to get the CPU endianness at runtime.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250417131004.47205-4-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2025-04-17 10:47:00 +02:00
parent 56f8fb6886
commit 33fa8f02a9
1 changed files with 16 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

34
target/mips/tcg/msa_helper.c
View file

@ -8212,7 +8212,6 @@ void helper_msa_ffint_u_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
/* Element-by-element access macros */
#define DF_ELEMENTS(df) (MSA_WRLEN / DF_BITS(df))
#if TARGET_BIG_ENDIAN
static inline uint64_t bswap16x4(uint64_t x)
{
uint64_t m = 0x00ff00ff00ff00ffull;
@ -8223,7 +8222,6 @@ static inline uint64_t bswap32x2(uint64_t x)
{
return ror64(bswap64(x), 32);
}
#endif
void helper_msa_ld_b(CPUMIPSState *env, uint32_t wd,
target_ulong addr)
@ -8252,10 +8250,10 @@ void helper_msa_ld_h(CPUMIPSState *env, uint32_t wd,
*/
d0 = cpu_ldq_le_data_ra(env, addr + 0, ra);
d1 = cpu_ldq_le_data_ra(env, addr + 8, ra);
#if TARGET_BIG_ENDIAN
d0 = bswap16x4(d0);
d1 = bswap16x4(d1);
#endif
if (mips_env_is_bigendian(env)) {
d0 = bswap16x4(d0);
d1 = bswap16x4(d1);
}
pwd->d[0] = d0;
pwd->d[1] = d1;
}
@ -8273,10 +8271,10 @@ void helper_msa_ld_w(CPUMIPSState *env, uint32_t wd,
*/
d0 = cpu_ldq_le_data_ra(env, addr + 0, ra);
d1 = cpu_ldq_le_data_ra(env, addr + 8, ra);
#if TARGET_BIG_ENDIAN
d0 = bswap32x2(d0);
d1 = bswap32x2(d1);
#endif
if (mips_env_is_bigendian(env)) {
d0 = bswap32x2(d0);
d1 = bswap32x2(d1);
}
pwd->d[0] = d0;
pwd->d[1] = d1;
}
@ -8339,10 +8337,10 @@ void helper_msa_st_h(CPUMIPSState *env, uint32_t wd,
/* Store 8 bytes at a time. See helper_msa_ld_h. */
d0 = pwd->d[0];
d1 = pwd->d[1];
#if TARGET_BIG_ENDIAN
d0 = bswap16x4(d0);
d1 = bswap16x4(d1);
#endif
if (mips_env_is_bigendian(env)) {
d0 = bswap16x4(d0);
d1 = bswap16x4(d1);
}
cpu_stq_le_data_ra(env, addr + 0, d0, ra);
cpu_stq_le_data_ra(env, addr + 8, d1, ra);
}
@ -8360,10 +8358,10 @@ void helper_msa_st_w(CPUMIPSState *env, uint32_t wd,
/* Store 8 bytes at a time. See helper_msa_ld_w. */
d0 = pwd->d[0];
d1 = pwd->d[1];
#if TARGET_BIG_ENDIAN
d0 = bswap32x2(d0);
d1 = bswap32x2(d1);
#endif
if (mips_env_is_bigendian(env)) {
d0 = bswap32x2(d0);
d1 = bswap32x2(d1);
}
cpu_stq_le_data_ra(env, addr + 0, d0, ra);
cpu_stq_le_data_ra(env, addr + 8, d1, ra);
}