mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-27 06:25:00 +00:00
ee8e76141b
The shmat() handling needs to do target-specific handling of the attach address for shmat(): * if the SHM_RND flag is passed, the address is rounded down to a SHMLBA boundary * if SHM_RND is not passed, then the call is failed EINVAL if the address is not a multiple of SHMLBA Since SHMLBA is target-specific, we need to do this checking and rounding in QEMU and can't leave it up to the host syscall. Allow targets to define TARGET_FORCE_SHMLBA and provide a target_shmlba() function if appropriate, and update do_shmat() to honour them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
#ifndef SPARC_TARGET_SYSCALL_H
|
|
#define SPARC_TARGET_SYSCALL_H
|
|
|
|
struct target_pt_regs {
|
|
abi_ulong psr;
|
|
abi_ulong pc;
|
|
abi_ulong npc;
|
|
abi_ulong y;
|
|
abi_ulong u_regs[16];
|
|
};
|
|
|
|
#define UNAME_MACHINE "sun4"
|
|
#define UNAME_MINIMUM_RELEASE "2.6.32"
|
|
|
|
/* SPARC kernels don't define this in their Kconfig, but they have the
|
|
* same ABI as if they did, implemented by sparc-specific code which fishes
|
|
* directly in the u_regs() struct for half the parameters in sparc_do_fork()
|
|
* and copy_thread().
|
|
*/
|
|
#define TARGET_CLONE_BACKWARDS
|
|
#define TARGET_MINSIGSTKSZ 4096
|
|
#define TARGET_MLOCKALL_MCL_CURRENT 0x2000
|
|
#define TARGET_MLOCKALL_MCL_FUTURE 0x4000
|
|
|
|
/* For SPARC SHMLBA is determined at runtime in the kernel, and
|
|
* libc has to runtime-detect it using the hwcaps (see glibc
|
|
* sysdeps/unix/sysv/linux/sparc/getshmlba; we follow the same
|
|
* logic here, though we know we're not the sparc v9 64-bit case).
|
|
*/
|
|
#define TARGET_FORCE_SHMLBA
|
|
|
|
static inline abi_ulong target_shmlba(CPUSPARCState *env)
|
|
{
|
|
if (!(env->def->features & CPU_FEATURE_FLUSH)) {
|
|
return 64 * 1024;
|
|
} else {
|
|
return 256 * 1024;
|
|
}
|
|
}
|
|
|
|
#endif /* SPARC_TARGET_SYSCALL_H */
|