patch-1.3.4 linux/include/asm-sparc/traps.h
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- Lines: 136
- Date:
Sun Jun 18 02:33:57 1995
- Orig file:
v1.3.3/linux/include/asm-sparc/traps.h
- Orig date:
Thu Jan 1 02:00:00 1970
diff -u --recursive --new-file v1.3.3/linux/include/asm-sparc/traps.h linux/include/asm-sparc/traps.h
@@ -0,0 +1,135 @@
+/* traps.h: Format of entries for the Sparc trap table.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC_TRAPS_H
+#define _SPARC_TRAPS_H
+
+#define NUM_SPARC_TRAPS 255
+
+/* This is for V8 and V9 compliant Sparc CPUS */
+struct tt_entry {
+ unsigned long inst_one;
+ unsigned long inst_two;
+ unsigned long inst_three;
+ unsigned long inst_four;
+};
+
+/* We set this to _start in system setup. */
+extern struct tt_entry *sparc_ttable;
+
+/* This for V9 compliant Sparc CPUS */
+struct tt_v9_entry {
+ unsigned long inst_one;
+ unsigned long inst_two;
+ unsigned long inst_three;
+ unsigned long inst_four;
+ unsigned long inst_five;
+ unsigned long inst_six;
+ unsigned long inst_seven;
+ unsigned long inst_eight;
+};
+
+/* V9 has multiple trap tables, which one is used depends
+ * upon how deep within multiple traps you are.
+ * I believe the UltraSparc supports two levels now.
+ */
+extern struct tt_v9_entry *sparc_v9_ttablel0;
+extern struct tt_v9_entry *sparc_v9_ttablel1;
+
+/* For patching the trap table at boot time, we need to know how to
+ * form various common Sparc instructions. Thus these macros...
+ */
+
+#define SPARC_MOV_CONST_L3(const) (0xa6102000 | (const&0xfff))
+
+/* The following assumes that the branch lies before the place we
+ * are branching to. This is the case for a trap vector...
+ * You have been warned.
+ */
+#define SPARC_BRANCH(dest_addr, inst_addr) \
+ (0x10800000 | (((dest_addr-inst_addr)>>2)&0x3fffff))
+
+#define SPARC_RD_PSR_L0 (0xa1480000)
+#define SPARC_NOP (0x01000000)
+
+/* Various interesting trap levels. */
+/* First, hardware traps. */
+#define SP_TRAP_TFLT 0x1 /* Text fault */
+#define SP_TRAP_II 0x2 /* Illegal Instruction */
+#define SP_TRAP_PI 0x3 /* Priviledged Instruction */
+#define SP_TRAP_FPD 0x4 /* Floating Point Disabled */
+#define SP_TRAP_WOVF 0x5 /* Window Overflow */
+#define SP_TRAP_WUNF 0x6 /* Window Underflow */
+#define SP_TRAP_MNA 0x7 /* Memory Address Unaligned */
+#define SP_TRAP_FPE 0x8 /* Floating Point Exception */
+#define SP_TRAP_DFLT 0x9 /* Data Fault */
+#define SP_TRAP_TOF 0xa /* Tag Overflow */
+#define SP_TRAP_WDOG 0xb /* Watchpoint Detected */
+#define SP_TRAP_IRQ1 0x11 /* IRQ level 1 */
+#define SP_TRAP_IRQ2 0x12 /* IRQ level 2 */
+#define SP_TRAP_IRQ3 0x13 /* IRQ level 3 */
+#define SP_TRAP_IRQ4 0x14 /* IRQ level 4 */
+#define SP_TRAP_IRQ5 0x15 /* IRQ level 5 */
+#define SP_TRAP_IRQ6 0x16 /* IRQ level 6 */
+#define SP_TRAP_IRQ7 0x17 /* IRQ level 7 */
+#define SP_TRAP_IRQ8 0x18 /* IRQ level 8 */
+#define SP_TRAP_IRQ9 0x19 /* IRQ level 9 */
+#define SP_TRAP_IRQ10 0x1a /* IRQ level 10 */
+#define SP_TRAP_IRQ11 0x1b /* IRQ level 11 */
+#define SP_TRAP_IRQ12 0x1c /* IRQ level 12 */
+#define SP_TRAP_IRQ13 0x1d /* IRQ level 13 */
+#define SP_TRAP_IRQ14 0x1e /* IRQ level 14 */
+#define SP_TRAP_IRQ15 0x1f /* IRQ level 15 Non-maskable */
+#define SP_TRAP_RACC 0x20 /* Register Access Error ??? */
+#define SP_TRAP_IACC 0x21 /* Instruction Access Error */
+#define SP_TRAP_CPDIS 0x24 /* Co-Processor Disabled */
+#define SP_TRAP_BADFL 0x25 /* Unimplemented Flush Instruction */
+#define SP_TRAP_CPEXP 0x28 /* Co-Processor Exception */
+#define SP_TRAP_DACC 0x29 /* Data Access Error */
+#define SP_TRAP_DIVZ 0x2a /* Divide By Zero */
+#define SP_TRAP_DSTORE 0x2b /* Data Store Error ??? */
+#define SP_TRAP_DMM 0x2c /* Data Access MMU Miss ??? */
+#define SP_TRAP_IMM 0x3c /* Instruction Access MMU Miss ??? */
+
+/* Now the Software Traps... */
+#define SP_TRAP_SUNOS 0x80 /* SunOS System Call */
+#define SP_TRAP_SBPT 0x81 /* Software Breakpoint */
+#define SP_TRAP_SDIVZ 0x82 /* Software Divide-by-Zero trap */
+#define SP_TRAP_FWIN 0x83 /* Flush Windows */
+#define SP_TRAP_CWIN 0x84 /* Clean Windows */
+#define SP_TRAP_RCHK 0x85 /* Range Check */
+#define SP_TRAP_FUNA 0x86 /* Fix Unaligned Access */
+#define SP_TRAP_IOWFL 0x87 /* Integer Overflow */
+#define SP_TRAP_SOLARIS 0x88 /* Solaris System Call */
+#define SP_TRAP_NETBSD 0x89 /* NetBSD System Call */
+#define SP_TRAP_LINUX 0x90 /* Linux System Call */
+
+/* Special traps... */
+#define SP_TRAP_KBPT1 0xfe /* KADB/PROM Breakpoint one */
+#define SP_TRAP_KBPT2 0xff /* KADB/PROM Breakpoint two */
+
+/* Handy Macros */
+/* Is this a trap we never expect to get? */
+#define BAD_TRAP_P(level) \
+ ((level > SP_TRAP_WDOG && level < SP_TRAP_IRQ1) || \
+ (level > SP_TRAP_IACC && level < SP_TRAP_CPDIS) || \
+ (level > SP_TRAP_BADFL && level < SP_TRAP_CPEXP) || \
+ (level > SP_TRAP_DMM && level < SP_TRAP_IMM) || \
+ (level > SP_TRAP_IMM && level < SP_TRAP_SUNOS) || \
+ (level > SP_TRAP_LINUX && level < SP_TRAP_KBPT1))
+
+/* Is this a Hardware trap? */
+#define HW_TRAP_P(level) ((level > 0) && (level < SP_TRAP_SUNOS))
+
+/* Is this a Software trap? */
+#define SW_TRAP_P(level) ((level >= SP_TRAP_SUNOS) && (level <= SP_TRAP_KBPT2))
+
+/* Is this a system call for some OS we know about? */
+#define SCALL_TRAP_P(level) ((level == SP_TRAP_SUNOS) || \
+ (level == SP_TRAP_SOLARIS) || \
+ (level == SP_TRAP_NETBSD) || \
+ (level == SP_TRAP_LINUX))
+
+#endif /* !(_SPARC_TRAPS_H) */
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with Sam's (original) version of this