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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * S390 version * Copyright IBM Corp. 1999, 2000 * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) */ #ifndef _S390_PTRACE_H #define _S390_PTRACE_H #include <linux/const.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__ */ #ifndef __s390x__ #define PSW_MASK_PER _AC(0x40000000, UL) #define PSW_MASK_DAT _AC(0x04000000, UL) #define PSW_MASK_IO _AC(0x02000000, UL) #define PSW_MASK_EXT _AC(0x01000000, UL) #define PSW_MASK_KEY _AC(0x00F00000, UL) #define PSW_MASK_BASE _AC(0x00080000, UL) /* always one */ #define PSW_MASK_MCHECK _AC(0x00040000, UL) #define PSW_MASK_WAIT _AC(0x00020000, UL) #define PSW_MASK_PSTATE _AC(0x00010000, UL) #define PSW_MASK_ASC _AC(0x0000C000, UL) #define PSW_MASK_CC _AC(0x00003000, UL) #define PSW_MASK_PM _AC(0x00000F00, UL) #define PSW_MASK_RI _AC(0x00000000, UL) #define PSW_MASK_EA _AC(0x00000000, UL) #define PSW_MASK_BA _AC(0x00000000, UL) #define PSW_MASK_USER _AC(0x0000FF00, UL) #define PSW_ADDR_AMODE _AC(0x80000000, UL) #define PSW_ADDR_INSN _AC(0x7FFFFFFF, UL) #define PSW_ASC_PRIMARY _AC(0x00000000, UL) #define PSW_ASC_ACCREG _AC(0x00004000, UL) #define PSW_ASC_SECONDARY _AC(0x00008000, UL) #define PSW_ASC_HOME _AC(0x0000C000, UL) #else /* __s390x__ */ #define PSW_MASK_PER _AC(0x4000000000000000, UL) #define PSW_MASK_DAT _AC(0x0400000000000000, UL) #define PSW_MASK_IO _AC(0x0200000000000000, UL) #define PSW_MASK_EXT _AC(0x0100000000000000, UL) #define PSW_MASK_BASE _AC(0x0000000000000000, UL) #define PSW_MASK_KEY _AC(0x00F0000000000000, UL) #define PSW_MASK_MCHECK _AC(0x0004000000000000, UL) #define PSW_MASK_WAIT _AC(0x0002000000000000, UL) #define PSW_MASK_PSTATE _AC(0x0001000000000000, UL) #define PSW_MASK_ASC _AC(0x0000C00000000000, UL) #define PSW_MASK_CC _AC(0x0000300000000000, UL) #define PSW_MASK_PM _AC(0x00000F0000000000, UL) #define PSW_MASK_RI _AC(0x0000008000000000, UL) #define PSW_MASK_EA _AC(0x0000000100000000, UL) #define PSW_MASK_BA _AC(0x0000000080000000, UL) #define PSW_MASK_USER _AC(0x0000FF0180000000, UL) #define PSW_ADDR_AMODE _AC(0x0000000000000000, UL) #define PSW_ADDR_INSN _AC(0xFFFFFFFFFFFFFFFF, UL) #define PSW_ASC_PRIMARY _AC(0x0000000000000000, UL) #define PSW_ASC_ACCREG _AC(0x0000400000000000, UL) #define PSW_ASC_SECONDARY _AC(0x0000800000000000, UL) #define PSW_ASC_HOME _AC(0x0000C00000000000, UL) #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 #define PTRACE_SYSEMU 31 #define PTRACE_SYSEMU_SINGLESTEP 32 #ifndef __ASSEMBLY__ #include <linux/stddef.h> #include <linux/types.h> typedef union { float f; double d; __u64 ui; struct { __u32 hi; __u32 lo; } fp; } freg_t; typedef struct { __u32 fpc; __u32 pad; 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 /* this typedef defines how a Program Status Word looks like */ typedef struct { unsigned long mask; unsigned long addr; } __attribute__ ((aligned(8))) psw_t; /* * 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; /* * The user_pt_regs structure exports the beginning of * the in-kernel pt_regs structure to user space. */ typedef struct { unsigned long args[1]; psw_t psw; unsigned long gprs[NUM_GPRS]; } user_pt_regs; /* * 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; /* * The single_step and instruction_fetch bits are obsolete, * the kernel always sets them to zero. To enable single * stepping use ptrace(PTRACE_SINGLESTEP) instead. */ 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 #define PTRACE_PEEK_SYSTEM_CALL 0x5007 #define PTRACE_POKE_SYSTEM_CALL 0x5008 #define PTRACE_ENABLE_TE 0x5009 #define PTRACE_DISABLE_TE 0x5010 #define PTRACE_TE_ABORT_RAND 0x5011 /* * The numbers chosen here are somewhat arbitrary but absolutely MUST * not overlap with any of the number assigned in <linux/ptrace.h>. */ #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */ /* * 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 */ }; #endif /* __ASSEMBLY__ */ #endif /* _S390_PTRACE_H */