arch/powerpc/include/asm/asm-prototypes.h

   1 #ifndef _ASM_POWERPC_ASM_PROTOTYPES_H
   2 #define _ASM_POWERPC_ASM_PROTOTYPES_H
   3 /*
   4  * This file is for prototypes of C functions that are only called
   5  * from asm, and any associated variables.
   6  *
   7  * Copyright 2016, Daniel Axtens, IBM Corporation.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  */
  14
  15 #include <linux/threads.h>
  16 #include <asm/cacheflush.h>
  17 #include <asm/checksum.h>
  18 #include <asm/uaccess.h>
  19 #include <asm/epapr_hcalls.h>
  20
  21 #include <uapi/asm/ucontext.h>
  22
  23 /* SMP */
  24 extern struct thread_info *current_set[NR_CPUS];
  25 extern struct thread_info *secondary_ti;
  26 void start_secondary(void *unused);
  27
  28 /* kexec */
  29 struct paca_struct;
  30 struct kimage;
  31 extern struct paca_struct kexec_paca;
  32 void kexec_copy_flush(struct kimage *image);
  33
  34 /* pseries hcall tracing */
  35 extern struct static_key hcall_tracepoint_key;
  36 void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
  37 void __trace_hcall_exit(long opcode, unsigned long retval,
  38                         unsigned long *retbuf);
  39 /* OPAL tracing */
  40 #ifdef HAVE_JUMP_LABEL
  41 extern struct static_key opal_tracepoint_key;
  42 #endif
  43
  44 void __trace_opal_entry(unsigned long opcode, unsigned long *args);
  45 void __trace_opal_exit(long opcode, unsigned long retval);
  46
  47 /* VMX copying */
  48 int enter_vmx_usercopy(void);
  49 int exit_vmx_usercopy(void);
  50 int enter_vmx_copy(void);
  51 void * exit_vmx_copy(void *dest);
  52
  53 /* Traps */
  54 long machine_check_early(struct pt_regs *regs);
  55 long hmi_exception_realmode(struct pt_regs *regs);
  56 void SMIException(struct pt_regs *regs);
  57 void handle_hmi_exception(struct pt_regs *regs);
  58 void instruction_breakpoint_exception(struct pt_regs *regs);
  59 void RunModeException(struct pt_regs *regs);
  60 void single_step_exception(struct pt_regs *regs);
  61 void program_check_exception(struct pt_regs *regs);
  62 void alignment_exception(struct pt_regs *regs);
  63 void StackOverflow(struct pt_regs *regs);
  64 void nonrecoverable_exception(struct pt_regs *regs);
  65 void kernel_fp_unavailable_exception(struct pt_regs *regs);
  66 void altivec_unavailable_exception(struct pt_regs *regs);
  67 void vsx_unavailable_exception(struct pt_regs *regs);
  68 void fp_unavailable_tm(struct pt_regs *regs);
  69 void altivec_unavailable_tm(struct pt_regs *regs);
  70 void vsx_unavailable_tm(struct pt_regs *regs);
  71 void facility_unavailable_exception(struct pt_regs *regs);
  72 void TAUException(struct pt_regs *regs);
  73 void altivec_assist_exception(struct pt_regs *regs);
  74 void unrecoverable_exception(struct pt_regs *regs);
  75 void kernel_bad_stack(struct pt_regs *regs);
  76 void system_reset_exception(struct pt_regs *regs);
  77 void machine_check_exception(struct pt_regs *regs);
  78 void emulation_assist_interrupt(struct pt_regs *regs);
  79
  80 /* signals, syscalls and interrupts */
  81 #ifdef CONFIG_PPC64
  82 int sys_swapcontext(struct ucontext __user *old_ctx,
  83                     struct ucontext __user *new_ctx,
  84                     long ctx_size, long r6, long r7, long r8, struct pt_regs *regs);
  85 #else
  86 long sys_swapcontext(struct ucontext __user *old_ctx,
  87                     struct ucontext __user *new_ctx,
  88                     int ctx_size, int r6, int r7, int r8, struct pt_regs *regs);
  89 #endif
  90 long sys_switch_endian(void);
  91 notrace unsigned int __check_irq_replay(void);
  92 void notrace restore_interrupts(void);
  93
  94 /* ptrace */
  95 long do_syscall_trace_enter(struct pt_regs *regs);
  96 void do_syscall_trace_leave(struct pt_regs *regs);
  97
  98 /* process */
  99 void restore_math(struct pt_regs *regs);
 100 void restore_tm_state(struct pt_regs *regs);
 101
 102 /* prom_init (OpenFirmware) */
 103 unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 104                                unsigned long pp,
 105                                unsigned long r6, unsigned long r7,
 106                                unsigned long kbase);
 107
 108 /* setup */
 109 void __init early_setup(unsigned long dt_ptr);
 110 void early_setup_secondary(void);
 111
 112 /* time */
 113 void accumulate_stolen_time(void);
 114
 115 /* misc runtime */
 116 extern u64 __bswapdi2(u64);
 117 extern s64 __lshrdi3(s64, int);
 118 extern s64 __ashldi3(s64, int);
 119 extern s64 __ashrdi3(s64, int);
 120 extern int __cmpdi2(s64, s64);
 121 extern int __ucmpdi2(u64, u64);
 122
 123 #endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */