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authorAl Viro <viro@zeniv.linux.org.uk>2008-08-17 21:05:42 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-10-22 22:55:20 -0700
commitbb8985586b7a906e116db835c64773b7a7d51663 (patch)
treede93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/kgdb.h
parent8ede0bdb63305d3353efd97e9af6210afb05734e (diff)
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/kgdb.h')
-rw-r--r--arch/x86/include/asm/kgdb.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kgdb.h b/arch/x86/include/asm/kgdb.h
new file mode 100644
index 00000000000..d283863354d
--- /dev/null
+++ b/arch/x86/include/asm/kgdb.h
@@ -0,0 +1,79 @@
+#ifndef ASM_X86__KGDB_H
+#define ASM_X86__KGDB_H
+
+/*
+ * Copyright (C) 2001-2004 Amit S. Kale
+ * Copyright (C) 2008 Wind River Systems, Inc.
+ */
+
+/*
+ * BUFMAX defines the maximum number of characters in inbound/outbound
+ * buffers at least NUMREGBYTES*2 are needed for register packets
+ * Longer buffer is needed to list all threads
+ */
+#define BUFMAX 1024
+
+/*
+ * Note that this register image is in a different order than
+ * the register image that Linux produces at interrupt time.
+ *
+ * Linux's register image is defined by struct pt_regs in ptrace.h.
+ * Just why GDB uses a different order is a historical mystery.
+ */
+#ifdef CONFIG_X86_32
+enum regnames {
+ GDB_AX, /* 0 */
+ GDB_CX, /* 1 */
+ GDB_DX, /* 2 */
+ GDB_BX, /* 3 */
+ GDB_SP, /* 4 */
+ GDB_BP, /* 5 */
+ GDB_SI, /* 6 */
+ GDB_DI, /* 7 */
+ GDB_PC, /* 8 also known as eip */
+ GDB_PS, /* 9 also known as eflags */
+ GDB_CS, /* 10 */
+ GDB_SS, /* 11 */
+ GDB_DS, /* 12 */
+ GDB_ES, /* 13 */
+ GDB_FS, /* 14 */
+ GDB_GS, /* 15 */
+};
+#define NUMREGBYTES ((GDB_GS+1)*4)
+#else /* ! CONFIG_X86_32 */
+enum regnames64 {
+ GDB_AX, /* 0 */
+ GDB_BX, /* 1 */
+ GDB_CX, /* 2 */
+ GDB_DX, /* 3 */
+ GDB_SI, /* 4 */
+ GDB_DI, /* 5 */
+ GDB_BP, /* 6 */
+ GDB_SP, /* 7 */
+ GDB_R8, /* 8 */
+ GDB_R9, /* 9 */
+ GDB_R10, /* 10 */
+ GDB_R11, /* 11 */
+ GDB_R12, /* 12 */
+ GDB_R13, /* 13 */
+ GDB_R14, /* 14 */
+ GDB_R15, /* 15 */
+ GDB_PC, /* 16 */
+};
+
+enum regnames32 {
+ GDB_PS = 34,
+ GDB_CS,
+ GDB_SS,
+};
+#define NUMREGBYTES ((GDB_SS+1)*4)
+#endif /* CONFIG_X86_32 */
+
+static inline void arch_kgdb_breakpoint(void)
+{
+ asm(" int $3");
+}
+#define BREAK_INSTR_SIZE 1
+#define CACHE_FLUSH_IS_SAFE 1
+
+#endif /* ASM_X86__KGDB_H */