#ifndef _I960_PTRACE_H
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#ifndef _I960_PTRACE_H
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#define _I960_PTRACE_H
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#define _I960_PTRACE_H
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/* this file describes the stack. While our actual stack frame contains only
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/* this file describes the stack. While our actual stack frame contains only
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* the local registers, a few words before the frame pointer we'll have the
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* the local registers, a few words before the frame pointer we'll have the
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* PC and AC, so we just consider this structure as if it were the actual
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* PC and AC, so we just consider this structure as if it were the actual
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* regset. Since interrupts save the g-regs, we might as well make those
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* regset. Since interrupts save the g-regs, we might as well make those
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* available as well.
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* available as well.
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*/
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*/
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/* 16 local registers */
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/* 16 local registers */
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#define PT_R0 0
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#define PT_R0 0
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#define PT_R1 1
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#define PT_R1 1
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#define PT_R2 2
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#define PT_R2 2
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#define PT_R3 3
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#define PT_R3 3
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#define PT_R4 4
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#define PT_R4 4
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#define PT_R5 5
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#define PT_R5 5
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#define PT_R6 6
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#define PT_R6 6
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#define PT_R7 7
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#define PT_R7 7
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#define PT_R8 8
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#define PT_R8 8
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#define PT_R9 9
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#define PT_R9 9
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#define PT_R10 10
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#define PT_R10 10
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#define PT_R11 11
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#define PT_R11 11
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#define PT_R12 12
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#define PT_R12 12
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#define PT_R13 13
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#define PT_R13 13
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#define PT_R14 14
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#define PT_R14 14
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#define PT_R15 15
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#define PT_R15 15
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/* AKAs for local registers */
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/* AKAs for local registers */
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#define PT_PFP 0
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#define PT_PFP 0
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#define PT_SP 1
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#define PT_SP 1
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#define PT_RIP 2
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#define PT_RIP 2
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#ifndef __ASSEMBLY__
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#ifndef __ASSEMBLY__
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/* this struct defines the way the registers are stored on the
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/* this struct defines the way the registers are stored on the
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stack during system calls and interrupts */
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stack during system calls and interrupts */
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struct pt_regs {
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struct pt_regs {
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/* FP - 16 */
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/* FP - 16 */
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long pc; /* processor control reg */
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long pc; /* processor control reg */
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long ac; /* arithmetic control reg */
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long ac; /* arithmetic control reg */
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unsigned char vecs[4]; /* vecs[3] is irq; rest are reserved */
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unsigned char vecs[4]; /* vecs[3] is irq; rest are reserved */
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long reserved;
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long reserved;
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/* FP */
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/* FP */
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long lregs[16]; /* 16 local regs */
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long lregs[16]; /* 16 local regs */
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long gregs[16]; /* 16 global regs */
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long gregs[16]; /* 16 global regs */
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};
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};
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#ifdef __KERNEL__
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#ifdef __KERNEL__
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#if 1
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#if 1
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#define user_mode(regs) (!test_bit(1, &(regs)->pc) )
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#define user_mode(regs) (!test_bit(1, &(regs)->pc) )
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#else
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#else
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/*
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/*
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* Two cases: if 1st bit of pfp is set, it was a system call from user mode.
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* Two cases: if 1st bit of pfp is set, it was a system call from user mode.
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* Otherwise, if the pfp's return field is 7 (i.e., it was an interrupt) we
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* Otherwise, if the pfp's return field is 7 (i.e., it was an interrupt) we
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* can check the image of the PC. When we're in syscalls, we can't trust the
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* can check the image of the PC. When we're in syscalls, we can't trust the
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* PC image in regs...
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* PC image in regs...
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*/
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*/
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#define user_mode(regs) \
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#define user_mode(regs) \
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( ((regs)->lregs[PT_PFP] & 0x2) || \
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( ((regs)->lregs[PT_PFP] & 0x2) || \
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(((regs)->lregs[PT_PFP] & 0x7)==0x7 && (!test_bit(1, &(regs)->pc))) )
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(((regs)->lregs[PT_PFP] & 0x7)==0x7 && (!test_bit(1, &(regs)->pc))) )
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extern void show_regs(struct pt_regs *);
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extern void show_regs(struct pt_regs *);
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#endif /* 0 */
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#endif /* 0 */
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/* get RIP out of previous frame */
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/* get RIP out of previous frame */
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#define instruction_pointer(regs) \
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#define instruction_pointer(regs) \
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( ((unsigned long*)((regs)->lregs[PT_PFP]))[PT_RIP])
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( ((unsigned long*)((regs)->lregs[PT_PFP]))[PT_RIP])
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#endif /* __KERNEL__ */
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#endif /* __KERNEL__ */
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#endif /* __ASSEMBLY__ */
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#endif /* __ASSEMBLY__ */
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#endif /* _I960_PTRACE_H */
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#endif /* _I960_PTRACE_H */
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