9807f75955
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
108 lines
3 KiB
C
108 lines
3 KiB
C
/*
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* S390 version
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* Copyright IBM Corp. 1999, 2000
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* Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
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*/
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#ifndef _S390_PTRACE_H
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#define _S390_PTRACE_H
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#include <uapi/asm/ptrace.h>
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#ifndef __ASSEMBLY__
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#ifndef __s390x__
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#else /* __s390x__ */
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#endif /* __s390x__ */
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extern long psw_kernel_bits;
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extern long psw_user_bits;
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/*
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* The pt_regs struct defines the way the registers are stored on
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* the stack during a system call.
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*/
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struct pt_regs
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{
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unsigned long args[1];
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psw_t psw;
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unsigned long gprs[NUM_GPRS];
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unsigned long orig_gpr2;
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unsigned int int_code;
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unsigned long int_parm_long;
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};
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/*
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* Program event recording (PER) register set.
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*/
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struct per_regs {
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unsigned long control; /* PER control bits */
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unsigned long start; /* PER starting address */
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unsigned long end; /* PER ending address */
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};
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/*
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* PER event contains information about the cause of the last PER exception.
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*/
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struct per_event {
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unsigned short cause; /* PER code, ATMID and AI */
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unsigned long address; /* PER address */
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unsigned char paid; /* PER access identification */
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};
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/*
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* Simplified per_info structure used to decode the ptrace user space ABI.
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*/
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struct per_struct_kernel {
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unsigned long cr9; /* PER control bits */
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unsigned long cr10; /* PER starting address */
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unsigned long cr11; /* PER ending address */
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unsigned long bits; /* Obsolete software bits */
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unsigned long starting_addr; /* User specified start address */
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unsigned long ending_addr; /* User specified end address */
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unsigned short perc_atmid; /* PER trap ATMID */
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unsigned long address; /* PER trap instruction address */
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unsigned char access_id; /* PER trap access identification */
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};
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#define PER_EVENT_MASK 0xEB000000UL
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#define PER_EVENT_BRANCH 0x80000000UL
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#define PER_EVENT_IFETCH 0x40000000UL
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#define PER_EVENT_STORE 0x20000000UL
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#define PER_EVENT_STORE_REAL 0x08000000UL
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#define PER_EVENT_TRANSACTION_END 0x02000000UL
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#define PER_EVENT_NULLIFICATION 0x01000000UL
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#define PER_CONTROL_MASK 0x00e00000UL
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#define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL
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#define PER_CONTROL_SUSPENSION 0x00400000UL
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#define PER_CONTROL_ALTERATION 0x00200000UL
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#ifdef __s390x__
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#endif /* __s390x__ */
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/*
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* These are defined as per linux/ptrace.h, which see.
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*/
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#define arch_has_single_step() (1)
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#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
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#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
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#define user_stack_pointer(regs)((regs)->gprs[15])
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#define profile_pc(regs) instruction_pointer(regs)
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static inline long regs_return_value(struct pt_regs *regs)
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{
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return regs->gprs[2];
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}
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int regs_query_register_offset(const char *name);
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const char *regs_query_register_name(unsigned int offset);
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unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
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unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
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static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
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{
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return regs->gprs[15] & PSW_ADDR_INSN;
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}
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#endif /* __ASSEMBLY__ */
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#endif /* _S390_PTRACE_H */
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