/* * System call callback functions for SPUs */ #undef DEBUG #include #include #include #include #include #include /* * This table defines the system calls that an SPU can call. * It is currently a subset of the 64 bit powerpc system calls, * with the exact semantics. * * The reasons for disabling some of the system calls are: * 1. They interact with the way SPU syscalls are handled * and we can't let them execute ever: * restart_syscall, exit, for, execve, ptrace, ... * 2. They are deprecated and replaced by other means: * uselib, pciconfig_*, sysfs, ... * 3. They are somewhat interacting with the system in a way * we don't want an SPU to: * reboot, init_module, mount, kexec_load * 4. They are optional and we can't rely on them being * linked into the kernel. Unfortunately, the cond_syscall * helper does not work here as it does not add the necessary * opd symbols: * mbind, mq_open, ipc, ... */ static void *spu_syscall_table[] = { #define SYSCALL(func) sys_ni_syscall, #define COMPAT_SYS(func) sys_ni_syscall, #define PPC_SYS(func) sys_ni_syscall, #define OLDSYS(func) sys_ni_syscall, #define SYS32ONLY(func) sys_ni_syscall, #define PPC64ONLY(func) sys_ni_syscall, #define SYSX(f, f3264, f32) sys_ni_syscall, #define SYSCALL_SPU(func) sys_##func, #define COMPAT_SYS_SPU(func) sys_##func, #define PPC_SYS_SPU(func) ppc_##func, #define SYSX_SPU(f, f3264, f32) f, #include }; long spu_sys_callback(struct spu_syscall_block *s) { long (*syscall)(u64 a1, u64 a2, u64 a3, u64 a4, u64 a5, u64 a6); if (s->nr_ret >= ARRAY_SIZE(spu_syscall_table)) { pr_debug("%s: invalid syscall #%lld", __func__, s->nr_ret); return -ENOSYS; } syscall = spu_syscall_table[s->nr_ret]; pr_debug("SPU-syscall " "%pSR:syscall%lld(%llx, %llx, %llx, %llx, %llx, %llx)\n", syscall, s->nr_ret, s->parm[0], s->parm[1], s->parm[2], s->parm[3], s->parm[4], s->parm[5]); return syscall(s->parm[0], s->parm[1], s->parm[2], s->parm[3], s->parm[4], s->parm[5]); } EXPORT_SYMBOL_GPL(spu_sys_callback); et' action='/cgit.cgi/linux/net-next.git/log/arch/powerpc/boot/dts/kilauea.dts'>

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