/* * include/asm-s390/ptrace.h * * S390 version * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) */ #ifndef _S390_PTRACE_H #define _S390_PTRACE_H /* * Offsets in the user_regs_struct. They are used for the ptrace * system call and in entry.S */ #ifndef __s390x__ #define PT_PSWMASK 0x00 #define PT_PSWADDR 0x04 #define PT_GPR0 0x08 #define PT_GPR1 0x0C #define PT_GPR2 0x10 #define PT_GPR3 0x14 #define PT_GPR4 0x18 #define PT_GPR5 0x1C #define PT_GPR6 0x20 #define PT_GPR7 0x24 #define PT_GPR8 0x28 #define PT_GPR9 0x2C #define PT_GPR10 0x30 #define PT_GPR11 0x34 #define PT_GPR12 0x38 #define PT_GPR13 0x3C #define PT_GPR14 0x40 #define PT_GPR15 0x44 #define PT_ACR0 0x48 #define PT_ACR1 0x4C #define PT_ACR2 0x50 #define PT_ACR3 0x54 #define PT_ACR4 0x58 #define PT_ACR5 0x5C #define PT_ACR6 0x60 #define PT_ACR7 0x64 #define PT_ACR8 0x68 #define PT_ACR9 0x6C #define PT_ACR10 0x70 #define PT_ACR11 0x74 #define PT_ACR12 0x78 #define PT_ACR13 0x7C #define PT_ACR14 0x80 #define PT_ACR15 0x84 #define PT_ORIGGPR2 0x88 #define PT_FPC 0x90 /* * A nasty fact of life that the ptrace api * only supports passing of longs. */ #define PT_FPR0_HI 0x98 #define PT_FPR0_LO 0x9C #define PT_FPR1_HI 0xA0 #define PT_FPR1_LO 0xA4 #define PT_FPR2_HI 0xA8 #define PT_FPR2_LO 0xAC #define PT_FPR3_HI 0xB0 #define PT_FPR3_LO 0xB4 #define PT_FPR4_HI 0xB8 #define PT_FPR4_LO 0xBC #define PT_FPR5_HI 0xC0 #define PT_FPR5_LO 0xC4 #define PT_FPR6_HI 0xC8 #define PT_FPR6_LO 0xCC #define PT_FPR7_HI 0xD0 #define PT_FPR7_LO 0xD4 #define PT_FPR8_HI 0xD8 #define PT_FPR8_LO 0XDC #define PT_FPR9_HI 0xE0 #define PT_FPR9_LO 0xE4 #define PT_FPR10_HI 0xE8 #define PT_FPR10_LO 0xEC #define PT_FPR11_HI 0xF0 #define PT_FPR11_LO 0xF4 #define PT_FPR12_HI 0xF8 #define PT_FPR12_LO 0xFC #define PT_FPR13_HI 0x100 #define PT_FPR13_LO 0x104 #define PT_FPR14_HI 0x108 #define PT_FPR14_LO 0x10C #define PT_FPR15_HI 0x110 #define PT_FPR15_LO 0x114 #define PT_CR_9 0x118 #define PT_CR_10 0x11C #define PT_CR_11 0x120 #define PT_IEEE_IP 0x13C #define PT_LASTOFF PT_IEEE_IP #define PT_ENDREGS 0x140-1 #define GPR_SIZE 4 #define CR_SIZE 4 #define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */ #else /* __s390x__ */ #define PT_PSWMASK 0x00 #define PT_PSWADDR 0x08 #define PT_GPR0 0x10 #define PT_GPR1 0x18 #define PT_GPR2 0x20 #define PT_GPR3 0x28 #define PT_GPR4 0x30 #define PT_GPR5 0x38 #define PT_GPR6 0x40 #define PT_GPR7 0x48 #define PT_GPR8 0x50 #define PT_GPR9 0x58 #define PT_GPR10 0x60 #define PT_GPR11 0x68 #define PT_GPR12 0x70 #define PT_GPR13 0x78 #define PT_GPR14 0x80 #define PT_GPR15 0x88 #define PT_ACR0 0x90 #define PT_ACR1 0x94 #define PT_ACR2 0x98 #define PT_ACR3 0x9C #define PT_ACR4 0xA0 #define PT_ACR5 0xA4 #define PT_ACR6 0xA8 #define PT_ACR7 0xAC #define PT_ACR8 0xB0 #define PT_ACR9 0xB4 #define PT_ACR10 0xB8 #define PT_ACR11 0xBC #define PT_ACR12 0xC0 #define PT_ACR13 0xC4 #define PT_ACR14 0xC8 #define PT_ACR15 0xCC #define PT_ORIGGPR2 0xD0 #define PT_FPC 0xD8 #define PT_FPR0 0xE0 #define PT_FPR1 0xE8 #define PT_FPR2 0xF0 #define PT_FPR3 0xF8 #define PT_FPR4 0x100 #define PT_FPR5 0x108 #define PT_FPR6 0x110 #define PT_FPR7 0x118 #define PT_FPR8 0x120 #define PT_FPR9 0x128 #define PT_FPR10 0x130 #define PT_FPR11 0x138 #define PT_FPR12 0x140 #define PT_FPR13 0x148 #define PT_FPR14 0x150 #define PT_FPR15 0x158 #define PT_CR_9 0x160 #define PT_CR_10 0x168 #define PT_CR_11 0x170 #define PT_IEEE_IP 0x1A8 #define PT_LASTOFF PT_IEEE_IP #define PT_ENDREGS 0x1B0-1 #define GPR_SIZE 8 #define CR_SIZE 8 #define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ #endif /* __s390x__ */ #define NUM_GPRS 16 #define NUM_FPRS 16 #define NUM_CRS 16 #define NUM_ACRS 16 #define NUM_CR_WORDS 3 #define FPR_SIZE 8 #define FPC_SIZE 4 #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ #define ACR_SIZE 4 #define PTRACE_OLDSETOPTIONS 21 #ifndef __ASSEMBLY__ #include #include typedef union { float f; double d; __u64 ui; struct { __u32 hi; __u32 lo; } fp; } freg_t; typedef struct { __u32 fpc; freg_t fprs[NUM_FPRS]; } s390_fp_regs; #define FPC_EXCEPTION_MASK 0xF8000000 #define FPC_FLAGS_MASK 0x00F80000 #define FPC_DXC_MASK 0x0000FF00 #define FPC_RM_MASK 0x00000003 #define FPC_VALID_MASK 0xF8F8FF03 /* this typedef defines how a Program Status Word looks like */ typedef struct { unsigned long mask; unsigned long addr; } __attribute__ ((aligned(8))) psw_t; typedef struct { __u32 mask; __u32 addr; } __attribute__ ((aligned(8))) psw_compat_t; #ifndef __s390x__ #define PSW_MASK_PER 0x40000000UL #define PSW_MASK_DAT 0x04000000UL #define PSW_MASK_IO 0x02000000UL #define PSW_MASK_EXT 0x01000000UL #define PSW_MASK_KEY 0x00F00000UL #define PSW_MASK_MCHECK 0x00040000UL #define PSW_MASK_WAIT 0x00020000UL #define PSW_MASK_PSTATE 0x00010000UL #define PSW_MASK_ASC 0x0000C000UL #define PSW_MASK_CC 0x00003000UL #define PSW_MASK_PM 0x00000F00UL #define PSW_ADDR_AMODE 0x80000000UL #define PSW_ADDR_INSN 0x7FFFFFFFUL #define PSW_BASE_BITS 0x00080000UL #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 20) #define PSW_ASC_PRIMARY 0x00000000UL #define PSW_ASC_ACCREG 0x00004000UL #define PSW_ASC_SECONDARY 0x00008000UL #define PSW_ASC_HOME 0x0000C000UL #else /* __s390x__ */ #define PSW_MASK_PER 0x4000000000000000UL #define PSW_MASK_DAT 0x0400000000000000UL #define PSW_MASK_IO 0x0200000000000000UL #define PSW_MASK_EXT 0x0100000000000000UL #define PSW_MASK_KEY 0x00F0000000000000UL #define PSW_MASK_MCHECK 0x0004000000000000UL #define PSW_MASK_WAIT 0x0002000000000000UL #define PSW_MASK_PSTATE 0x0001000000000000UL #define PSW_MASK_ASC 0x0000C00000000000UL #define PSW_MASK_CC 0x0000300000000000UL #define PSW_MASK_PM 0x00000F0000000000UL #define PSW_ADDR_AMODE 0x0000000000000000UL #define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL #define PSW_BASE_BITS 0x0000000180000000UL #define PSW_BASE32_BITS 0x0000000080000000UL #define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 52) #define PSW_ASC_PRIMARY 0x0000000000000000UL #define PSW_ASC_ACCREG 0x0000400000000000UL #define PSW_ASC_SECONDARY 0x0000800000000000UL #define PSW_ASC_HOME 0x0000C00000000000UL #endif /* __s390x__ */ #ifdef __KERNEL__ extern long psw_kernel_bits; extern long psw_user_bits; #ifdef CONFIG_64BIT extern long psw_user32_bits; #endif #endif /* This macro merges a NEW PSW mask specified by the user into the currently active PSW mask CURRENT, modifying only those bits in CURRENT that the user may be allowed to change: this is the condition code and the program mask bits. */ #define PSW_MASK_MERGE(CURRENT,NEW) \ (((CURRENT) & ~(PSW_MASK_CC|PSW_MASK_PM)) | \ ((NEW) & (PSW_MASK_CC|PSW_MASK_PM))) /* * The s390_regs structure is used to define the elf_gregset_t. */ typedef struct { psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned int acrs[NUM_ACRS]; unsigned long orig_gpr2; } s390_regs; typedef struct { psw_compat_t psw; __u32 gprs[NUM_GPRS]; __u32 acrs[NUM_ACRS]; __u32 orig_gpr2; } s390_compat_regs; typedef struct { __u32 gprs_high[NUM_GPRS]; } s390_compat_regs_high; #ifdef __KERNEL__ /* * The pt_regs struct defines the way the registers are stored on * the stack during a system call. */ struct pt_regs { unsigned long args[1]; psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned long orig_gpr2; unsigned short ilc; unsigned short svcnr; }; /* * Program event recording (PER) register set. */ struct per_regs { unsigned long control; /* PER control bits */ unsigned long start; /* PER starting address */ unsigned long end; /* PER ending address */ }; /* * PER event contains information about the cause of the last PER exception. */ struct per_event { unsigned short cause; /* PER code, ATMID and AI */ unsigned long address; /* PER address */ unsigned char paid; /* PER access identification */ }; /* * Simplified per_info structure used to decode the ptrace user space ABI. */ struct per_struct_kernel { unsigned long cr9; /* PER control bits */ unsigned long cr10; /* PER starting address */ unsigned long cr11; /* PER ending address */ unsigned long bits; /* Obsolete software bits */ unsigned long starting_addr; /* User specified start address */ unsigned long ending_addr; /* User specified end address */ unsigned short perc_atmid; /* PER trap ATMID */ unsigned long address; /* PER trap instruction address */ unsigned char access_id; /* PER trap access identification */ }; #define PER_EVENT_MASK 0xE9000000UL #define PER_EVENT_BRANCH 0x80000000UL #define PER_EVENT_IFETCH 0x40000000UL #define PER_EVENT_STORE 0x20000000UL #define PER_EVENT_STORE_REAL 0x08000000UL #define PER_EVENT_NULLIFICATION 0x01000000UL #define PER_CONTROL_MASK 0x00a00000UL #define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL #define PER_CONTROL_ALTERATION 0x00200000UL #endif /* * Now for the user space program event recording (trace) definitions. * The following structures are used only for the ptrace interface, don't * touch or even look at it if you don't want to modify the user-space * ptrace interface. In particular stay away from it for in-kernel PER. */ typedef struct { unsigned long cr[NUM_CR_WORDS]; } per_cr_words; #define PER_EM_MASK 0xE8000000UL typedef struct { #ifdef __s390x__ unsigned : 32; #endif /* __s390x__ */ unsigned em_branching : 1; unsigned em_instruction_fetch : 1; /* * Switching on storage alteration automatically fixes * the storage alteration event bit in the users std. */ unsigned em_storage_alteration : 1; unsigned em_gpr_alt_unused : 1; unsigned em_store_real_address : 1; unsigned : 3; unsigned branch_addr_ctl : 1; unsigned : 1; unsigned storage_alt_space_ctl : 1; unsigned : 21; unsigned long starting_addr; unsigned long ending_addr; } per_cr_bits; typedef struct { unsigned short perc_atmid; unsigned long address; unsigned char access_id; } per_lowcore_words; typedef struct { unsigned perc_branching : 1; unsigned perc_instruction_fetch : 1; unsigned perc_storage_alteration : 1; unsigned perc_gpr_alt_unused : 1; unsigned perc_store_real_address : 1; unsigned : 3; unsigned atmid_psw_bit_31 : 1; unsigned atmid_validity_bit : 1; unsigned atmid_psw_bit_32 : 1; unsigned atmid_psw_bit_5 : 1; unsigned atmid_psw_bit_16 : 1; unsigned atmid_psw_bit_17 : 1; unsigned si : 2; unsigned long address; unsigned : 4; unsigned access_id : 4; } per_lowcore_bits; typedef struct { union { per_cr_words words; per_cr_bits bits; } control_regs; /* * Use these flags instead of setting em_instruction_fetch * directly they are used so that single stepping can be * switched on & off while not affecting other tracing */ unsigned single_step : 1; unsigned instruction_fetch : 1; unsigned : 30; /* * These addresses are copied into cr10 & cr11 if single * stepping is switched off */ unsigned long starting_addr; unsigned long ending_addr; union { per_lowcore_words words; per_lowcore_bits bits; } lowcore; } per_struct; typedef struct { unsigned int len; unsigned long kernel_addr; unsigned long process_addr; } ptrace_area; /* * S/390 specific non posix ptrace requests. I chose unusual values so * they are unlikely to clash with future ptrace definitions. */ #define PTRACE_PEEKUSR_AREA 0x5000 #define PTRACE_POKEUSR_AREA 0x5001 #define PTRACE_PEEKTEXT_AREA 0x5002 #define PTRACE_PEEKDATA_AREA 0x5003 #define PTRACE_POKETEXT_AREA 0x5004 #define PTRACE_POKEDATA_AREA 0x5005 #define PTRACE_GET_LAST_BREAK 0x5006 /* * PT_PROT definition is loosely based on hppa bsd definition in * gdb/hppab-nat.c */ #define PTRACE_PROT 21 typedef enum { ptprot_set_access_watchpoint, ptprot_set_write_watchpoint, ptprot_disable_watchpoint } ptprot_flags; typedef struct { unsigned long lowaddr; unsigned long hiaddr; ptprot_flags prot; } ptprot_area; /* Sequence of bytes for breakpoint illegal instruction. */ #define S390_BREAKPOINT {0x0,0x1} #define S390_BREAKPOINT_U16 ((__u16)0x0001) #define S390_SYSCALL_OPCODE ((__u16)0x0a00) #define S390_SYSCALL_SIZE 2 /* * The user_regs_struct defines the way the user registers are * store on the stack for signal handling. */ struct user_regs_struct { psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned int acrs[NUM_ACRS]; unsigned long orig_gpr2; s390_fp_regs fp_regs; /* * These per registers are in here so that gdb can modify them * itself as there is no "official" ptrace interface for hardware * watchpoints. This is the way intel does it. */ per_struct per_info; unsigned long ieee_instruction_pointer; /* obsolete, always 0 */ }; #ifdef __KERNEL__ /* * These are defined as per linux/ptrace.h, which see. */ #define arch_has_single_step() (1) #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) #define user_stack_pointer(regs)((regs)->gprs[15]) #define regs_return_value(regs)((regs)->gprs[2]) #define profile_pc(regs) instruction_pointer(regs) int regs_query_register_offset(const char *name); const char *regs_query_register_name(unsigned int offset); unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) { return regs->gprs[15] & PSW_ADDR_INSN; } #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #endif /* _S390_PTRACE_H */