xnu-2422.115.4.tar.gz

[apple/xnu.git] / osfmk / i386 / bsd_i386.c

diff --git a/osfmk/i386/bsd_i386.c b/osfmk/i386/bsd_i386.c
index 57b222a14e7ad9bd2c131dab61a0865900e28c35..14795130823f8150ed8e4d3c9088a5c4ae4206bd 100644 (file)
--- a/osfmk/i386/bsd_i386.c
+++ b/osfmk/i386/bsd_i386.c
@@ -71,6 +71,7 @@
 
 #ifdef MACH_BSD
 extern void    mach_kauth_cred_uthread_update(void);
+extern void throttle_lowpri_io(int);
 #endif
 
 void * find_user_regs(thread_t);
@@ -81,8 +82,6 @@ unsigned int get_msr_nbits(void);
 
 unsigned int get_msr_rbits(void);
 
-extern void throttle_lowpri_io(int);
-
 /*
  * thread_userstack:
  *
@@ -146,6 +145,24 @@ thread_userstack(
        return (KERN_SUCCESS);
 }
 
+/*
+ * thread_userstackdefault:
+ *
+ * Return the default stack location for the
+ * thread, if otherwise unknown.
+ */
+kern_return_t
+thread_userstackdefault(
+       thread_t thread,
+       mach_vm_offset_t *default_user_stack)
+{
+       if (thread_is_64bit(thread)) {
+               *default_user_stack = VM_USRSTACK64;
+       } else {
+               *default_user_stack = VM_USRSTACK32;
+       }
+       return (KERN_SUCCESS);
+}
 
 kern_return_t
 thread_entrypoint(
@@ -229,7 +246,7 @@ machdep_syscall(x86_saved_state_t *state)
        int                     args[machdep_call_count];
        int                     trapno;
        int                     nargs;
-       machdep_call_t          *entry;
+       const machdep_call_t    *entry;
        x86_saved_state32_t     *regs;
 
        assert(is_saved_state32(state));
@@ -300,7 +317,7 @@ machdep_syscall(x86_saved_state_t *state)
 
        DEBUG_KPRINT_SYSCALL_MDEP("machdep_syscall: retval=%u\n", regs->eax);
 
-       throttle_lowpri_io(TRUE);
+       throttle_lowpri_io(1);
 
        thread_exception_return();
        /* NOTREACHED */
@@ -311,7 +328,7 @@ void
 machdep_syscall64(x86_saved_state_t *state)
 {
        int                     trapno;
-       machdep_call_t          *entry;
+       const machdep_call_t    *entry;
        x86_saved_state64_t     *regs;
 
        assert(is_saved_state64(state));
@@ -345,7 +362,7 @@ machdep_syscall64(x86_saved_state_t *state)
 
        DEBUG_KPRINT_SYSCALL_MDEP("machdep_syscall: retval=%llu\n", regs->rax);
 
-       throttle_lowpri_io(TRUE);
+       throttle_lowpri_io(1);
 
        thread_exception_return();
        /* NOTREACHED */
@@ -369,37 +386,15 @@ struct mach_call_args {
 };
 
 static kern_return_t
-mach_call_arg_munger32(uint32_t sp, int nargs, int call_number, struct mach_call_args *args);
+mach_call_arg_munger32(uint32_t sp, struct mach_call_args *args, const mach_trap_t *trapp);
 
 
 static kern_return_t
-mach_call_arg_munger32(uint32_t sp, int nargs, int call_number, struct mach_call_args *args)
+mach_call_arg_munger32(uint32_t sp, struct mach_call_args *args, const mach_trap_t *trapp)
 {
-       unsigned int args32[9];
-
-       if (copyin((user_addr_t)(sp + sizeof(int)), (char *)args32, nargs * sizeof (int)))
+       if (copyin((user_addr_t)(sp + sizeof(int)), (char *)args, trapp->mach_trap_u32_words * sizeof (int)))
                return KERN_INVALID_ARGUMENT;
-
-       switch (nargs) {
-       case 9: args->arg9 = args32[8];
-       case 8: args->arg8 = args32[7];
-       case 7: args->arg7 = args32[6];
-       case 6: args->arg6 = args32[5];
-       case 5: args->arg5 = args32[4];
-       case 4: args->arg4 = args32[3];
-       case 3: args->arg3 = args32[2];
-       case 2: args->arg2 = args32[1];
-       case 1: args->arg1 = args32[0];
-       }
-       if (call_number == 90) {
-               /* munge_l for mach_wait_until_trap() */
-               args->arg1 = (((uint64_t)(args32[0])) | ((((uint64_t)(args32[1]))<<32)));
-       }
-       if (call_number == 93) {
-               /* munge_wl for mk_timer_arm_trap() */
-               args->arg2 = (((uint64_t)(args32[1])) | ((((uint64_t)(args32[2]))<<32)));
-       }
-
+       trapp->mach_trap_arg_munge32(NULL, args);
        return KERN_SUCCESS;
 }
 
@@ -445,7 +440,7 @@ mach_call_munger(x86_saved_state_t *state)
 
        argc = mach_trap_table[call_number].mach_trap_arg_count;
        if (argc) {
-               retval = mach_call_arg_munger32(regs->uesp, argc, call_number, &args);
+               retval = mach_call_arg_munger32(regs->uesp, &args,  &mach_trap_table[call_number]);
                if (retval != KERN_SUCCESS) {
                        regs->eax = retval;
 
@@ -460,18 +455,22 @@ mach_call_munger(x86_saved_state_t *state)
 #ifdef MACH_BSD
        mach_kauth_cred_uthread_update();
 #endif
-       KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
-                       args.arg1, args.arg2, args.arg3, args.arg4, 0);
+
+       KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+               MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
+               args.arg1, args.arg2, args.arg3, args.arg4, 0);
 
        retval = mach_call(&args);
 
        DEBUG_KPRINT_SYSCALL_MACH("mach_call_munger: retval=0x%x\n", retval);
 
-       KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
-                       retval, 0, 0, 0, 0);
+       KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+               MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
+               retval, 0, 0, 0, 0);
+
        regs->eax = retval;
 
-       throttle_lowpri_io(TRUE);
+       throttle_lowpri_io(1);
 
        thread_exception_return();
        /* NOTREACHED */
@@ -497,10 +496,9 @@ mach_call_munger64(x86_saved_state_t *state)
                "mach_call_munger64: code=%d(%s)\n",
                call_number, mach_syscall_name_table[call_number]);
 
-       KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,
-                                          (call_number)) | DBG_FUNC_START,
-                             regs->rdi, regs->rsi,
-                             regs->rdx, regs->r10, 0);
+       KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, 
+               MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_START,
+               regs->rdi, regs->rsi, regs->rdx, regs->r10, 0);
        
        if (call_number < 0 || call_number >= mach_trap_count) {
                i386_exception(EXC_SYSCALL, regs->rax, 1);
@@ -535,11 +533,11 @@ mach_call_munger64(x86_saved_state_t *state)
        
        DEBUG_KPRINT_SYSCALL_MACH( "mach_call_munger64: retval=0x%llx\n", regs->rax);
 
-       KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,
-                                          (call_number)) | DBG_FUNC_END,
-                             regs->rax, 0, 0, 0, 0);
+       KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, 
+               MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END, 
+               regs->rax, 0, 0, 0, 0);
 
-       throttle_lowpri_io(TRUE);
+       throttle_lowpri_io(1);
 
        thread_exception_return();
        /* NOTREACHED */