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head/sys/amd64/cloudabi64/cloudabi64_sysvec.c
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| #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 int | static int | ||||
| cloudabi64_fixup_tcb(register_t **stack_base, struct image_params *imgp) | cloudabi64_fixup_tcb(uintptr_t *stack_base, struct image_params *imgp) | ||||
| { | { | ||||
| int error; | int error; | ||||
| register_t tcbptr; | register_t tcbptr; | ||||
| /* Place auxiliary vector and TCB on the stack. */ | /* Place auxiliary vector and TCB on the stack. */ | ||||
| error = cloudabi64_fixup(stack_base, imgp); | error = cloudabi64_fixup(stack_base, imgp); | ||||
| if (error != 0) | if (error != 0) | ||||
| return (error); | return (error); | ||||
| /* | /* | ||||
| * On x86-64, the TCB is referred to by %fs:0. Take some space | * On x86-64, the TCB is referred to by %fs:0. Take some space | ||||
| * from the top of the stack to store a single element array, | * from the top of the stack to store a single element array, | ||||
| * containing a pointer to the TCB. %fs base will point to this. | * containing a pointer to the TCB. %fs base will point to this. | ||||
| */ | */ | ||||
| tcbptr = (register_t)*stack_base; | tcbptr = (register_t)*stack_base; | ||||
| return (copyout(&tcbptr, --*stack_base, sizeof(tcbptr))); | *stack_base -= sizeof(tcbptr); | ||||
| return (copyout(&tcbptr, (void *)*stack_base, sizeof(tcbptr))); | |||||
| } | } | ||||
| static void | static void | ||||
| cloudabi64_proc_setregs(struct thread *td, struct image_params *imgp, | cloudabi64_proc_setregs(struct thread *td, struct image_params *imgp, | ||||
| unsigned long stack) | uintptr_t stack) | ||||
| { | { | ||||
| struct trapframe *regs; | struct trapframe *regs; | ||||
| exec_setregs(td, imgp, stack); | exec_setregs(td, imgp, stack); | ||||
| /* | /* | ||||
| * The stack now contains a pointer to the TCB, the TCB itself, | * The stack now contains a pointer to the TCB, the TCB itself, | ||||
| * and the auxiliary vector. Let %rdx point to the auxiliary | * and the auxiliary vector. Let %rdx point to the auxiliary | ||||
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