uapi/asm/traps.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 /*
0003  * traps.h:  Format of entries for the Sparc trap table.
0004  *
0005  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
0006  */
0007
0008 #ifndef _UAPI_SPARC_TRAPS_H
0009 #define _UAPI_SPARC_TRAPS_H
0010
0011 #define NUM_SPARC_TRAPS  255
0012
0013 #ifndef __ASSEMBLY__
0014 #endif /* !(__ASSEMBLY__) */
0015
0016 /* For patching the trap table at boot time, we need to know how to
0017  * form various common Sparc instructions.  Thus these macros...
0018  */
0019
0020 #define SPARC_MOV_CONST_L3(const) (0xa6102000 | (const&0xfff))
0021
0022 /* The following assumes that the branch lies before the place we
0023  * are branching to.  This is the case for a trap vector...
0024  * You have been warned.
0025  */
0026 #define SPARC_BRANCH(dest_addr, inst_addr) \
0027           (0x10800000 | (((dest_addr-inst_addr)>>2)&0x3fffff))
0028
0029 #define SPARC_RD_PSR_L0  (0xa1480000)
0030 #define SPARC_RD_WIM_L3  (0xa7500000)
0031 #define SPARC_NOP (0x01000000)
0032
0033 /* Various interesting trap levels. */
0034 /* First, hardware traps. */
0035 #define SP_TRAP_TFLT    0x1          /* Text fault */
0036 #define SP_TRAP_II      0x2          /* Illegal Instruction */
0037 #define SP_TRAP_PI      0x3          /* Privileged Instruction */
0038 #define SP_TRAP_FPD     0x4          /* Floating Point Disabled */
0039 #define SP_TRAP_WOVF    0x5          /* Window Overflow */
0040 #define SP_TRAP_WUNF    0x6          /* Window Underflow */
0041 #define SP_TRAP_MNA     0x7          /* Memory Address Unaligned */
0042 #define SP_TRAP_FPE     0x8          /* Floating Point Exception */
0043 #define SP_TRAP_DFLT    0x9          /* Data Fault */
0044 #define SP_TRAP_TOF     0xa          /* Tag Overflow */
0045 #define SP_TRAP_WDOG    0xb          /* Watchpoint Detected */
0046 #define SP_TRAP_IRQ1    0x11         /* IRQ level 1 */
0047 #define SP_TRAP_IRQ2    0x12         /* IRQ level 2 */
0048 #define SP_TRAP_IRQ3    0x13         /* IRQ level 3 */
0049 #define SP_TRAP_IRQ4    0x14         /* IRQ level 4 */
0050 #define SP_TRAP_IRQ5    0x15         /* IRQ level 5 */
0051 #define SP_TRAP_IRQ6    0x16         /* IRQ level 6 */
0052 #define SP_TRAP_IRQ7    0x17         /* IRQ level 7 */
0053 #define SP_TRAP_IRQ8    0x18         /* IRQ level 8 */
0054 #define SP_TRAP_IRQ9    0x19         /* IRQ level 9 */
0055 #define SP_TRAP_IRQ10   0x1a         /* IRQ level 10 */
0056 #define SP_TRAP_IRQ11   0x1b         /* IRQ level 11 */
0057 #define SP_TRAP_IRQ12   0x1c         /* IRQ level 12 */
0058 #define SP_TRAP_IRQ13   0x1d         /* IRQ level 13 */
0059 #define SP_TRAP_IRQ14   0x1e         /* IRQ level 14 */
0060 #define SP_TRAP_IRQ15   0x1f         /* IRQ level 15 Non-maskable */
0061 #define SP_TRAP_RACC    0x20         /* Register Access Error ??? */
0062 #define SP_TRAP_IACC    0x21         /* Instruction Access Error */
0063 #define SP_TRAP_CPDIS   0x24         /* Co-Processor Disabled */
0064 #define SP_TRAP_BADFL   0x25         /* Unimplemented Flush Instruction */
0065 #define SP_TRAP_CPEXP   0x28         /* Co-Processor Exception */
0066 #define SP_TRAP_DACC    0x29         /* Data Access Error */
0067 #define SP_TRAP_DIVZ    0x2a         /* Divide By Zero */
0068 #define SP_TRAP_DSTORE  0x2b         /* Data Store Error ??? */
0069 #define SP_TRAP_DMM     0x2c         /* Data Access MMU Miss ??? */
0070 #define SP_TRAP_IMM     0x3c         /* Instruction Access MMU Miss ??? */
0071
0072 /* Now the Software Traps... */
0073 #define SP_TRAP_SUNOS   0x80         /* SunOS System Call */
0074 #define SP_TRAP_SBPT    0x81         /* Software Breakpoint */
0075 #define SP_TRAP_SDIVZ   0x82         /* Software Divide-by-Zero trap */
0076 #define SP_TRAP_FWIN    0x83         /* Flush Windows */
0077 #define SP_TRAP_CWIN    0x84         /* Clean Windows */
0078 #define SP_TRAP_RCHK    0x85         /* Range Check */
0079 #define SP_TRAP_FUNA    0x86         /* Fix Unaligned Access */
0080 #define SP_TRAP_IOWFL   0x87         /* Integer Overflow */
0081 #define SP_TRAP_SOLARIS 0x88         /* Solaris System Call */
0082 #define SP_TRAP_NETBSD  0x89         /* NetBSD System Call */
0083 #define SP_TRAP_LINUX   0x90         /* Linux System Call */
0084
0085 /* Names used for compatibility with SunOS */
0086 #define ST_SYSCALL              0x00
0087 #define ST_BREAKPOINT           0x01
0088 #define ST_DIV0                 0x02
0089 #define ST_FLUSH_WINDOWS        0x03
0090 #define ST_CLEAN_WINDOWS        0x04
0091 #define ST_RANGE_CHECK          0x05
0092 #define ST_FIX_ALIGN            0x06
0093 #define ST_INT_OVERFLOW         0x07
0094
0095 /* Special traps... */
0096 #define SP_TRAP_KBPT1   0xfe         /* KADB/PROM Breakpoint one */
0097 #define SP_TRAP_KBPT2   0xff         /* KADB/PROM Breakpoint two */
0098
0099 /* Handy Macros */
0100 /* Is this a trap we never expect to get? */
0101 #define BAD_TRAP_P(level) \
0102         ((level > SP_TRAP_WDOG && level < SP_TRAP_IRQ1) || \
0103      (level > SP_TRAP_IACC && level < SP_TRAP_CPDIS) || \
0104      (level > SP_TRAP_BADFL && level < SP_TRAP_CPEXP) || \
0105      (level > SP_TRAP_DMM && level < SP_TRAP_IMM) || \
0106      (level > SP_TRAP_IMM && level < SP_TRAP_SUNOS) || \
0107      (level > SP_TRAP_LINUX && level < SP_TRAP_KBPT1))
0108
0109 /* Is this a Hardware trap? */
0110 #define HW_TRAP_P(level) ((level > 0) && (level < SP_TRAP_SUNOS))
0111
0112 /* Is this a Software trap? */
0113 #define SW_TRAP_P(level) ((level >= SP_TRAP_SUNOS) && (level <= SP_TRAP_KBPT2))
0114
0115 /* Is this a system call for some OS we know about? */
0116 #define SCALL_TRAP_P(level) ((level == SP_TRAP_SUNOS) || \
0117                  (level == SP_TRAP_SOLARIS) || \
0118                  (level == SP_TRAP_NETBSD) || \
0119                  (level == SP_TRAP_LINUX))
0120
0121 #endif /* _UAPI_SPARC_TRAPS_H */