Differential D5836 Diff 14922 head/sys/arm64/cloudabi64/cloudabi64_sysvec.c

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head/sys/arm64/cloudabi64/cloudabi64_sysvec.c

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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.		* SUCH DAMAGE.
*/		*/

#include <sys/cdefs.h>		#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");		__FBSDID("$FreeBSD$");

#include <sys/param.h>		#include <sys/param.h>
		#include <sys/imgact.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/proc.h>		#include <sys/proc.h>
#include <sys/sysent.h>		#include <sys/sysent.h>

#include <vm/vm.h>		#include <vm/vm.h>
#include <vm/pmap.h>		#include <vm/pmap.h>

#include <machine/frame.h>		#include <machine/frame.h>
#include <machine/pcb.h>		#include <machine/pcb.h>
#include <machine/vmparam.h>		#include <machine/vmparam.h>

#include <compat/cloudabi/cloudabi_util.h>		#include <compat/cloudabi/cloudabi_util.h>

#include <compat/cloudabi64/cloudabi64_syscall.h>		#include <compat/cloudabi64/cloudabi64_syscall.h>
#include <compat/cloudabi64/cloudabi64_util.h>		#include <compat/cloudabi64/cloudabi64_util.h>

extern const char *cloudabi64_syscallnames[];		extern const char *cloudabi64_syscallnames[];
extern struct sysent cloudabi64_sysent[];		extern struct sysent cloudabi64_sysent[];

		static void
		cloudabi64_proc_setregs(struct thread td, struct image_params imgp,
		unsigned long stack)
		{
		struct trapframe *regs;

		exec_setregs(td, imgp, stack);

		/*
		* The stack now contains a pointer to the TCB and the auxiliary
		* vector. Let x0 point to the auxiliary vector, and set
		* tpidr_el0 to the TCB.
		*/
		regs = td->td_frame;
		regs->tf_x[0] = td->td_retval[0] =
		stack + roundup(sizeof(cloudabi64_tcb_t), sizeof(register_t));
		(void)cpu_set_user_tls(td, (void *)stack);
		}

static int		static int
cloudabi64_fetch_syscall_args(struct thread td, struct syscall_args sa)		cloudabi64_fetch_syscall_args(struct thread td, struct syscall_args sa)
{		{
struct trapframe *frame = td->td_frame;		struct trapframe *frame = td->td_frame;
int i;		int i;

/* Obtain system call number. */		/* Obtain system call number. */
sa->code = frame->tf_x[8];		sa->code = frame->tf_x[8];
▲ Show 20 Lines • Show All 48 Lines • ▼ Show 20 Lines	cloudabi64_schedtail(struct thread *td)
* when creating a new thread.		* when creating a new thread.
*/		*/
if ((td->td_pflags & TDP_FORKING) != 0) {		if ((td->td_pflags & TDP_FORKING) != 0) {
frame->tf_x[0] = CLOUDABI_PROCESS_CHILD;		frame->tf_x[0] = CLOUDABI_PROCESS_CHILD;
frame->tf_x[1] = td->td_tid;		frame->tf_x[1] = td->td_tid;
}		}
}		}

void		int
cloudabi64_thread_setregs(struct thread *td,		cloudabi64_thread_setregs(struct thread *td,
const cloudabi64_threadattr_t *attr)		const cloudabi64_threadattr_t *attr, uint64_t tcb)
{		{
struct trapframe *frame;		struct trapframe *frame;
stack_t stack;		stack_t stack;

/* Perform standard register initialization. */		/* Perform standard register initialization. */
stack.ss_sp = (void *)attr->stack;		stack.ss_sp = (void *)attr->stack;
stack.ss_size = attr->stack_size;		stack.ss_size = attr->stack_size;
cpu_set_upcall_kse(td, (void *)attr->entry_point, NULL, &stack);		cpu_set_upcall_kse(td, (void *)attr->entry_point, NULL, &stack);

/*		/*
* Pass in the thread ID of the new thread and the argument		* Pass in the thread ID of the new thread and the argument
* pointer provided by the parent thread in as arguments to the		* pointer provided by the parent thread in as arguments to the
* entry point.		* entry point.
*/		*/
frame = td->td_frame;		frame = td->td_frame;
frame->tf_x[0] = td->td_tid;		frame->tf_x[0] = td->td_tid;
frame->tf_x[1] = attr->argument;		frame->tf_x[1] = attr->argument;

		/* Set up TLS. */
		return (cpu_set_user_tls(td, (void *)tcb));
}		}

static struct sysentvec cloudabi64_elf_sysvec = {		static struct sysentvec cloudabi64_elf_sysvec = {
.sv_size = CLOUDABI64_SYS_MAXSYSCALL,		.sv_size = CLOUDABI64_SYS_MAXSYSCALL,
.sv_table = cloudabi64_sysent,		.sv_table = cloudabi64_sysent,
.sv_fixup = cloudabi64_fixup,		.sv_fixup = cloudabi64_fixup,
.sv_name = "CloudABI ELF64",		.sv_name = "CloudABI ELF64",
.sv_coredump = elf64_coredump,		.sv_coredump = elf64_coredump,
.sv_pagesize = PAGE_SIZE,		.sv_pagesize = PAGE_SIZE,
.sv_minuser = VM_MIN_ADDRESS,		.sv_minuser = VM_MIN_ADDRESS,
.sv_maxuser = VM_MAXUSER_ADDRESS,		.sv_maxuser = VM_MAXUSER_ADDRESS,
.sv_usrstack = USRSTACK,		.sv_usrstack = USRSTACK,
.sv_stackprot = VM_PROT_READ \| VM_PROT_WRITE,		.sv_stackprot = VM_PROT_READ \| VM_PROT_WRITE,
.sv_copyout_strings = cloudabi64_copyout_strings,		.sv_copyout_strings = cloudabi64_copyout_strings,
		.sv_setregs = cloudabi64_proc_setregs,
.sv_flags = SV_ABI_CLOUDABI \| SV_CAPSICUM \| SV_LP64,		.sv_flags = SV_ABI_CLOUDABI \| SV_CAPSICUM \| SV_LP64,
.sv_set_syscall_retval = cloudabi64_set_syscall_retval,		.sv_set_syscall_retval = cloudabi64_set_syscall_retval,
.sv_fetch_syscall_args = cloudabi64_fetch_syscall_args,		.sv_fetch_syscall_args = cloudabi64_fetch_syscall_args,
.sv_syscallnames = cloudabi64_syscallnames,		.sv_syscallnames = cloudabi64_syscallnames,
.sv_schedtail = cloudabi64_schedtail,		.sv_schedtail = cloudabi64_schedtail,
};		};

INIT_SYSENTVEC(elf_sysvec, &cloudabi64_elf_sysvec);		INIT_SYSENTVEC(elf_sysvec, &cloudabi64_elf_sysvec);

Elf64_Brandinfo cloudabi64_brand = {		Elf64_Brandinfo cloudabi64_brand = {
.brand = ELFOSABI_CLOUDABI,		.brand = ELFOSABI_CLOUDABI,
.machine = EM_AARCH64,		.machine = EM_AARCH64,
.sysvec = &cloudabi64_elf_sysvec,		.sysvec = &cloudabi64_elf_sysvec,
.flags = BI_CAN_EXEC_DYN,		.flags = BI_CAN_EXEC_DYN,
.compat_3_brand = "CloudABI",		.compat_3_brand = "CloudABI",
};		};