1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2/*
  3 * traps.h:  Format of entries for the Sparc trap table.
  4 *
  5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  6 */
  7
  8#ifndef _UAPI_SPARC_TRAPS_H
  9#define _UAPI_SPARC_TRAPS_H
 10
 11#define NUM_SPARC_TRAPS  255
 12
 13#ifndef __ASSEMBLY__
 14#endif /* !(__ASSEMBLY__) */
 15
 16/* For patching the trap table at boot time, we need to know how to
 17 * form various common Sparc instructions.  Thus these macros...
 18 */
 19
 20#define SPARC_MOV_CONST_L3(const) (0xa6102000 | (const&0xfff))
 21
 22/* The following assumes that the branch lies before the place we
 23 * are branching to.  This is the case for a trap vector...
 24 * You have been warned.
 25 */
 26#define SPARC_BRANCH(dest_addr, inst_addr) \
 27          (0x10800000 | (((dest_addr-inst_addr)>>2)&0x3fffff))
 28
 29#define SPARC_RD_PSR_L0  (0xa1480000)
 30#define SPARC_RD_WIM_L3  (0xa7500000)
 31#define SPARC_NOP (0x01000000)
 32
 33/* Various interesting trap levels. */
 34/* First, hardware traps. */
 35#define SP_TRAP_TFLT    0x1          /* Text fault */
 36#define SP_TRAP_II      0x2          /* Illegal Instruction */
 37#define SP_TRAP_PI      0x3          /* Privileged Instruction */
 38#define SP_TRAP_FPD     0x4          /* Floating Point Disabled */
 39#define SP_TRAP_WOVF    0x5          /* Window Overflow */
 40#define SP_TRAP_WUNF    0x6          /* Window Underflow */
 41#define SP_TRAP_MNA     0x7          /* Memory Address Unaligned */
 42#define SP_TRAP_FPE     0x8          /* Floating Point Exception */
 43#define SP_TRAP_DFLT    0x9          /* Data Fault */
 44#define SP_TRAP_TOF     0xa          /* Tag Overflow */
 45#define SP_TRAP_WDOG    0xb          /* Watchpoint Detected */
 46#define SP_TRAP_IRQ1    0x11         /* IRQ level 1 */
 47#define SP_TRAP_IRQ2    0x12         /* IRQ level 2 */
 48#define SP_TRAP_IRQ3    0x13         /* IRQ level 3 */
 49#define SP_TRAP_IRQ4    0x14         /* IRQ level 4 */
 50#define SP_TRAP_IRQ5    0x15         /* IRQ level 5 */
 51#define SP_TRAP_IRQ6    0x16         /* IRQ level 6 */
 52#define SP_TRAP_IRQ7    0x17         /* IRQ level 7 */
 53#define SP_TRAP_IRQ8    0x18         /* IRQ level 8 */
 54#define SP_TRAP_IRQ9    0x19         /* IRQ level 9 */
 55#define SP_TRAP_IRQ10   0x1a         /* IRQ level 10 */
 56#define SP_TRAP_IRQ11   0x1b         /* IRQ level 11 */
 57#define SP_TRAP_IRQ12   0x1c         /* IRQ level 12 */
 58#define SP_TRAP_IRQ13   0x1d         /* IRQ level 13 */
 59#define SP_TRAP_IRQ14   0x1e         /* IRQ level 14 */
 60#define SP_TRAP_IRQ15   0x1f         /* IRQ level 15 Non-maskable */
 61#define SP_TRAP_RACC    0x20         /* Register Access Error ??? */
 62#define SP_TRAP_IACC    0x21         /* Instruction Access Error */
 63#define SP_TRAP_CPDIS   0x24         /* Co-Processor Disabled */
 64#define SP_TRAP_BADFL   0x25         /* Unimplemented Flush Instruction */
 65#define SP_TRAP_CPEXP   0x28         /* Co-Processor Exception */
 66#define SP_TRAP_DACC    0x29         /* Data Access Error */
 67#define SP_TRAP_DIVZ    0x2a         /* Divide By Zero */
 68#define SP_TRAP_DSTORE  0x2b         /* Data Store Error ??? */
 69#define SP_TRAP_DMM     0x2c         /* Data Access MMU Miss ??? */
 70#define SP_TRAP_IMM     0x3c         /* Instruction Access MMU Miss ??? */
 71
 72/* Now the Software Traps... */
 73#define SP_TRAP_SUNOS   0x80         /* SunOS System Call */
 74#define SP_TRAP_SBPT    0x81         /* Software Breakpoint */
 75#define SP_TRAP_SDIVZ   0x82         /* Software Divide-by-Zero trap */
 76#define SP_TRAP_FWIN    0x83         /* Flush Windows */
 77#define SP_TRAP_CWIN    0x84         /* Clean Windows */
 78#define SP_TRAP_RCHK    0x85         /* Range Check */
 79#define SP_TRAP_FUNA    0x86         /* Fix Unaligned Access */
 80#define SP_TRAP_IOWFL   0x87         /* Integer Overflow */
 81#define SP_TRAP_SOLARIS 0x88         /* Solaris System Call */
 82#define SP_TRAP_NETBSD  0x89         /* NetBSD System Call */
 83#define SP_TRAP_LINUX   0x90         /* Linux System Call */
 84
 85/* Names used for compatibility with SunOS */
 86#define ST_SYSCALL              0x00
 87#define ST_BREAKPOINT           0x01
 88#define ST_DIV0                 0x02
 89#define ST_FLUSH_WINDOWS        0x03
 90#define ST_CLEAN_WINDOWS        0x04
 91#define ST_RANGE_CHECK          0x05
 92#define ST_FIX_ALIGN            0x06
 93#define ST_INT_OVERFLOW         0x07
 94
 95/* Special traps... */
 96#define SP_TRAP_KBPT1   0xfe         /* KADB/PROM Breakpoint one */
 97#define SP_TRAP_KBPT2   0xff         /* KADB/PROM Breakpoint two */
 98
 99/* Handy Macros */
100/* Is this a trap we never expect to get? */
101#define BAD_TRAP_P(level) \
102        ((level > SP_TRAP_WDOG && level < SP_TRAP_IRQ1) || \
103	 (level > SP_TRAP_IACC && level < SP_TRAP_CPDIS) || \
104	 (level > SP_TRAP_BADFL && level < SP_TRAP_CPEXP) || \
105	 (level > SP_TRAP_DMM && level < SP_TRAP_IMM) || \
106	 (level > SP_TRAP_IMM && level < SP_TRAP_SUNOS) || \
107	 (level > SP_TRAP_LINUX && level < SP_TRAP_KBPT1))
108
109/* Is this a Hardware trap? */
110#define HW_TRAP_P(level) ((level > 0) && (level < SP_TRAP_SUNOS))
111
112/* Is this a Software trap? */
113#define SW_TRAP_P(level) ((level >= SP_TRAP_SUNOS) && (level <= SP_TRAP_KBPT2))
114
115/* Is this a system call for some OS we know about? */
116#define SCALL_TRAP_P(level) ((level == SP_TRAP_SUNOS) || \
117			     (level == SP_TRAP_SOLARIS) || \
118			     (level == SP_TRAP_NETBSD) || \
119			     (level == SP_TRAP_LINUX))
120
121#endif /* _UAPI_SPARC_TRAPS_H */