1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * traps.h: Format of entries for the Sparc trap table. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef _UAPI_SPARC_TRAPS_H 9*4882a593Smuzhiyun #define _UAPI_SPARC_TRAPS_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #define NUM_SPARC_TRAPS 255 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 14*4882a593Smuzhiyun #endif /* !(__ASSEMBLY__) */ 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* For patching the trap table at boot time, we need to know how to 17*4882a593Smuzhiyun * form various common Sparc instructions. Thus these macros... 18*4882a593Smuzhiyun */ 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define SPARC_MOV_CONST_L3(const) (0xa6102000 | (const&0xfff)) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* The following assumes that the branch lies before the place we 23*4882a593Smuzhiyun * are branching to. This is the case for a trap vector... 24*4882a593Smuzhiyun * You have been warned. 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun #define SPARC_BRANCH(dest_addr, inst_addr) \ 27*4882a593Smuzhiyun (0x10800000 | (((dest_addr-inst_addr)>>2)&0x3fffff)) 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #define SPARC_RD_PSR_L0 (0xa1480000) 30*4882a593Smuzhiyun #define SPARC_RD_WIM_L3 (0xa7500000) 31*4882a593Smuzhiyun #define SPARC_NOP (0x01000000) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun /* Various interesting trap levels. */ 34*4882a593Smuzhiyun /* First, hardware traps. */ 35*4882a593Smuzhiyun #define SP_TRAP_TFLT 0x1 /* Text fault */ 36*4882a593Smuzhiyun #define SP_TRAP_II 0x2 /* Illegal Instruction */ 37*4882a593Smuzhiyun #define SP_TRAP_PI 0x3 /* Privileged Instruction */ 38*4882a593Smuzhiyun #define SP_TRAP_FPD 0x4 /* Floating Point Disabled */ 39*4882a593Smuzhiyun #define SP_TRAP_WOVF 0x5 /* Window Overflow */ 40*4882a593Smuzhiyun #define SP_TRAP_WUNF 0x6 /* Window Underflow */ 41*4882a593Smuzhiyun #define SP_TRAP_MNA 0x7 /* Memory Address Unaligned */ 42*4882a593Smuzhiyun #define SP_TRAP_FPE 0x8 /* Floating Point Exception */ 43*4882a593Smuzhiyun #define SP_TRAP_DFLT 0x9 /* Data Fault */ 44*4882a593Smuzhiyun #define SP_TRAP_TOF 0xa /* Tag Overflow */ 45*4882a593Smuzhiyun #define SP_TRAP_WDOG 0xb /* Watchpoint Detected */ 46*4882a593Smuzhiyun #define SP_TRAP_IRQ1 0x11 /* IRQ level 1 */ 47*4882a593Smuzhiyun #define SP_TRAP_IRQ2 0x12 /* IRQ level 2 */ 48*4882a593Smuzhiyun #define SP_TRAP_IRQ3 0x13 /* IRQ level 3 */ 49*4882a593Smuzhiyun #define SP_TRAP_IRQ4 0x14 /* IRQ level 4 */ 50*4882a593Smuzhiyun #define SP_TRAP_IRQ5 0x15 /* IRQ level 5 */ 51*4882a593Smuzhiyun #define SP_TRAP_IRQ6 0x16 /* IRQ level 6 */ 52*4882a593Smuzhiyun #define SP_TRAP_IRQ7 0x17 /* IRQ level 7 */ 53*4882a593Smuzhiyun #define SP_TRAP_IRQ8 0x18 /* IRQ level 8 */ 54*4882a593Smuzhiyun #define SP_TRAP_IRQ9 0x19 /* IRQ level 9 */ 55*4882a593Smuzhiyun #define SP_TRAP_IRQ10 0x1a /* IRQ level 10 */ 56*4882a593Smuzhiyun #define SP_TRAP_IRQ11 0x1b /* IRQ level 11 */ 57*4882a593Smuzhiyun #define SP_TRAP_IRQ12 0x1c /* IRQ level 12 */ 58*4882a593Smuzhiyun #define SP_TRAP_IRQ13 0x1d /* IRQ level 13 */ 59*4882a593Smuzhiyun #define SP_TRAP_IRQ14 0x1e /* IRQ level 14 */ 60*4882a593Smuzhiyun #define SP_TRAP_IRQ15 0x1f /* IRQ level 15 Non-maskable */ 61*4882a593Smuzhiyun #define SP_TRAP_RACC 0x20 /* Register Access Error ??? */ 62*4882a593Smuzhiyun #define SP_TRAP_IACC 0x21 /* Instruction Access Error */ 63*4882a593Smuzhiyun #define SP_TRAP_CPDIS 0x24 /* Co-Processor Disabled */ 64*4882a593Smuzhiyun #define SP_TRAP_BADFL 0x25 /* Unimplemented Flush Instruction */ 65*4882a593Smuzhiyun #define SP_TRAP_CPEXP 0x28 /* Co-Processor Exception */ 66*4882a593Smuzhiyun #define SP_TRAP_DACC 0x29 /* Data Access Error */ 67*4882a593Smuzhiyun #define SP_TRAP_DIVZ 0x2a /* Divide By Zero */ 68*4882a593Smuzhiyun #define SP_TRAP_DSTORE 0x2b /* Data Store Error ??? */ 69*4882a593Smuzhiyun #define SP_TRAP_DMM 0x2c /* Data Access MMU Miss ??? */ 70*4882a593Smuzhiyun #define SP_TRAP_IMM 0x3c /* Instruction Access MMU Miss ??? */ 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* Now the Software Traps... */ 73*4882a593Smuzhiyun #define SP_TRAP_SUNOS 0x80 /* SunOS System Call */ 74*4882a593Smuzhiyun #define SP_TRAP_SBPT 0x81 /* Software Breakpoint */ 75*4882a593Smuzhiyun #define SP_TRAP_SDIVZ 0x82 /* Software Divide-by-Zero trap */ 76*4882a593Smuzhiyun #define SP_TRAP_FWIN 0x83 /* Flush Windows */ 77*4882a593Smuzhiyun #define SP_TRAP_CWIN 0x84 /* Clean Windows */ 78*4882a593Smuzhiyun #define SP_TRAP_RCHK 0x85 /* Range Check */ 79*4882a593Smuzhiyun #define SP_TRAP_FUNA 0x86 /* Fix Unaligned Access */ 80*4882a593Smuzhiyun #define SP_TRAP_IOWFL 0x87 /* Integer Overflow */ 81*4882a593Smuzhiyun #define SP_TRAP_SOLARIS 0x88 /* Solaris System Call */ 82*4882a593Smuzhiyun #define SP_TRAP_NETBSD 0x89 /* NetBSD System Call */ 83*4882a593Smuzhiyun #define SP_TRAP_LINUX 0x90 /* Linux System Call */ 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun /* Names used for compatibility with SunOS */ 86*4882a593Smuzhiyun #define ST_SYSCALL 0x00 87*4882a593Smuzhiyun #define ST_BREAKPOINT 0x01 88*4882a593Smuzhiyun #define ST_DIV0 0x02 89*4882a593Smuzhiyun #define ST_FLUSH_WINDOWS 0x03 90*4882a593Smuzhiyun #define ST_CLEAN_WINDOWS 0x04 91*4882a593Smuzhiyun #define ST_RANGE_CHECK 0x05 92*4882a593Smuzhiyun #define ST_FIX_ALIGN 0x06 93*4882a593Smuzhiyun #define ST_INT_OVERFLOW 0x07 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun /* Special traps... */ 96*4882a593Smuzhiyun #define SP_TRAP_KBPT1 0xfe /* KADB/PROM Breakpoint one */ 97*4882a593Smuzhiyun #define SP_TRAP_KBPT2 0xff /* KADB/PROM Breakpoint two */ 98*4882a593Smuzhiyun 99*4882a593Smuzhiyun /* Handy Macros */ 100*4882a593Smuzhiyun /* Is this a trap we never expect to get? */ 101*4882a593Smuzhiyun #define BAD_TRAP_P(level) \ 102*4882a593Smuzhiyun ((level > SP_TRAP_WDOG && level < SP_TRAP_IRQ1) || \ 103*4882a593Smuzhiyun (level > SP_TRAP_IACC && level < SP_TRAP_CPDIS) || \ 104*4882a593Smuzhiyun (level > SP_TRAP_BADFL && level < SP_TRAP_CPEXP) || \ 105*4882a593Smuzhiyun (level > SP_TRAP_DMM && level < SP_TRAP_IMM) || \ 106*4882a593Smuzhiyun (level > SP_TRAP_IMM && level < SP_TRAP_SUNOS) || \ 107*4882a593Smuzhiyun (level > SP_TRAP_LINUX && level < SP_TRAP_KBPT1)) 108*4882a593Smuzhiyun 109*4882a593Smuzhiyun /* Is this a Hardware trap? */ 110*4882a593Smuzhiyun #define HW_TRAP_P(level) ((level > 0) && (level < SP_TRAP_SUNOS)) 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun /* Is this a Software trap? */ 113*4882a593Smuzhiyun #define SW_TRAP_P(level) ((level >= SP_TRAP_SUNOS) && (level <= SP_TRAP_KBPT2)) 114*4882a593Smuzhiyun 115*4882a593Smuzhiyun /* Is this a system call for some OS we know about? */ 116*4882a593Smuzhiyun #define SCALL_TRAP_P(level) ((level == SP_TRAP_SUNOS) || \ 117*4882a593Smuzhiyun (level == SP_TRAP_SOLARIS) || \ 118*4882a593Smuzhiyun (level == SP_TRAP_NETBSD) || \ 119*4882a593Smuzhiyun (level == SP_TRAP_LINUX)) 120*4882a593Smuzhiyun 121*4882a593Smuzhiyun #endif /* _UAPI_SPARC_TRAPS_H */ 122