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Diffstat (limited to 'include/asm-arm/kgdb.h')
| -rw-r--r-- | include/asm-arm/kgdb.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/include/asm-arm/kgdb.h b/include/asm-arm/kgdb.h deleted file mode 100644 index 67af4b841984..000000000000 --- a/include/asm-arm/kgdb.h +++ /dev/null | |||
| @@ -1,104 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * ARM KGDB support | ||
| 3 | * | ||
| 4 | * Author: Deepak Saxena <dsaxena@mvista.com> | ||
| 5 | * | ||
| 6 | * Copyright (C) 2002 MontaVista Software Inc. | ||
| 7 | * | ||
| 8 | */ | ||
| 9 | |||
| 10 | #ifndef __ARM_KGDB_H__ | ||
| 11 | #define __ARM_KGDB_H__ | ||
| 12 | |||
| 13 | #include <linux/ptrace.h> | ||
| 14 | |||
| 15 | /* | ||
| 16 | * GDB assumes that we're a user process being debugged, so | ||
| 17 | * it will send us an SWI command to write into memory as the | ||
| 18 | * debug trap. When an SWI occurs, the next instruction addr is | ||
| 19 | * placed into R14_svc before jumping to the vector trap. | ||
| 20 | * This doesn't work for kernel debugging as we are already in SVC | ||
| 21 | * we would loose the kernel's LR, which is a bad thing. This | ||
| 22 | * is bad thing. | ||
| 23 | * | ||
| 24 | * By doing this as an undefined instruction trap, we force a mode | ||
| 25 | * switch from SVC to UND mode, allowing us to save full kernel state. | ||
| 26 | * | ||
| 27 | * We also define a KGDB_COMPILED_BREAK which can be used to compile | ||
| 28 | * in breakpoints. This is important for things like sysrq-G and for | ||
| 29 | * the initial breakpoint from trap_init(). | ||
| 30 | * | ||
| 31 | * Note to ARM HW designers: Add real trap support like SH && PPC to | ||
| 32 | * make our lives much much simpler. :) | ||
| 33 | */ | ||
| 34 | #define BREAK_INSTR_SIZE 4 | ||
| 35 | #define GDB_BREAKINST 0xef9f0001 | ||
| 36 | #define KGDB_BREAKINST 0xe7ffdefe | ||
| 37 | #define KGDB_COMPILED_BREAK 0xe7ffdeff | ||
| 38 | #define CACHE_FLUSH_IS_SAFE 1 | ||
| 39 | |||
| 40 | #ifndef __ASSEMBLY__ | ||
| 41 | |||
| 42 | static inline void arch_kgdb_breakpoint(void) | ||
| 43 | { | ||
| 44 | asm(".word 0xe7ffdeff"); | ||
| 45 | } | ||
| 46 | |||
| 47 | extern void kgdb_handle_bus_error(void); | ||
| 48 | extern int kgdb_fault_expected; | ||
| 49 | |||
| 50 | #endif /* !__ASSEMBLY__ */ | ||
| 51 | |||
| 52 | /* | ||
| 53 | * From Kevin Hilman: | ||
| 54 | * | ||
| 55 | * gdb is expecting the following registers layout. | ||
| 56 | * | ||
| 57 | * r0-r15: 1 long word each | ||
| 58 | * f0-f7: unused, 3 long words each !! | ||
| 59 | * fps: unused, 1 long word | ||
| 60 | * cpsr: 1 long word | ||
| 61 | * | ||
| 62 | * Even though f0-f7 and fps are not used, they need to be | ||
| 63 | * present in the registers sent for correct processing in | ||
| 64 | * the host-side gdb. | ||
| 65 | * | ||
| 66 | * In particular, it is crucial that CPSR is in the right place, | ||
| 67 | * otherwise gdb will not be able to correctly interpret stepping over | ||
| 68 | * conditional branches. | ||
| 69 | */ | ||
| 70 | #define _GP_REGS 16 | ||
| 71 | #define _FP_REGS 8 | ||
| 72 | #define _EXTRA_REGS 2 | ||
| 73 | #define GDB_MAX_REGS (_GP_REGS + (_FP_REGS * 3) + _EXTRA_REGS) | ||
| 74 | |||
| 75 | #define KGDB_MAX_NO_CPUS 1 | ||
| 76 | #define BUFMAX 400 | ||
| 77 | #define NUMREGBYTES (GDB_MAX_REGS << 2) | ||
| 78 | #define NUMCRITREGBYTES (32 << 2) | ||
| 79 | |||
| 80 | #define _R0 0 | ||
| 81 | #define _R1 1 | ||
| 82 | #define _R2 2 | ||
| 83 | #define _R3 3 | ||
| 84 | #define _R4 4 | ||
| 85 | #define _R5 5 | ||
| 86 | #define _R6 6 | ||
| 87 | #define _R7 7 | ||
| 88 | #define _R8 8 | ||
| 89 | #define _R9 9 | ||
| 90 | #define _R10 10 | ||
| 91 | #define _FP 11 | ||
| 92 | #define _IP 12 | ||
| 93 | #define _SPT 13 | ||
| 94 | #define _LR 14 | ||
| 95 | #define _PC 15 | ||
| 96 | #define _CPSR (GDB_MAX_REGS - 1) | ||
| 97 | |||
| 98 | /* | ||
| 99 | * So that we can denote the end of a frame for tracing, | ||
| 100 | * in the simple case: | ||
| 101 | */ | ||
| 102 | #define CFI_END_FRAME(func) __CFI_END_FRAME(_PC, _SPT, func) | ||
| 103 | |||
| 104 | #endif /* __ASM_KGDB_H__ */ | ||