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
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#define SPARC_TARGET_SYSCALL_H
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struct target_pt_regs {
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abi_ulong psr;
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abi_ulong pc;
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abi_ulong npc;
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abi_ulong y;
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abi_ulong u_regs[16];
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};
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#define UNAME_MACHINE "sun4"
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#define UNAME_MINIMUM_RELEASE "2.6.32"
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/* SPARC kernels don't define this in their Kconfig, but they have the
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* same ABI as if they did, implemented by sparc-specific code which fishes
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* directly in the u_regs() struct for half the parameters in sparc_do_fork()
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* and copy_thread().
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*/
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#define TARGET_CLONE_BACKWARDS
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#define TARGET_MINSIGSTKSZ 4096
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#define TARGET_MLOCKALL_MCL_CURRENT 0x2000
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#define TARGET_MLOCKALL_MCL_FUTURE 0x4000
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/* For SPARC SHMLBA is determined at runtime in the kernel, and
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* libc has to runtime-detect it using the hwcaps (see glibc
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* sysdeps/unix/sysv/linux/sparc/getshmlba; we follow the same
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* logic here, though we know we're not the sparc v9 64-bit case).
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*/
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#define TARGET_FORCE_SHMLBA
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static inline abi_ulong target_shmlba(CPUSPARCState *env)
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{
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if (!(env->def->features & CPU_FEATURE_FLUSH)) {
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return 64 * 1024;
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} else {
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return 256 * 1024;
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}
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}
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#endif /* SPARC_TARGET_SYSCALL_H */
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