1 files changed, 140 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/traps.h b/arch/sparc/include/asm/traps.h
new file mode 100644
index 000000000000..bebdbf8f43a8
--- /dev/null
+++ b/arch/sparc/include/asm/traps.h
@@ -0,0 +1,140 @@
+/*
+ * 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
+
+#ifndef __ASSEMBLY__
+
+/* This is for V8 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;
+
+static inline unsigned long get_tbr(void)
+{
+        unsigned long tbr;
+
+        __asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (tbr));
+        return tbr;
+}
+
+#endif /* !(__ASSEMBLY__) */
+
+/* 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_RD_WIM_L3  (0xa7500000)
+#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          /* Privileged 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 */
+
+/* Names used for compatibility with SunOS */
+#define ST_SYSCALL              0x00
+#define ST_BREAKPOINT           0x01
+#define ST_DIV0                 0x02
+#define ST_FLUSH_WINDOWS        0x03
+#define ST_CLEAN_WINDOWS        0x04
+#define ST_RANGE_CHECK          0x05
+#define ST_FIX_ALIGN            0x06
+#define ST_INT_OVERFLOW         0x07
+
+/* 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) */