94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
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/*
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* Licensed under the GPL
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*/
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#ifndef __SYS_PTRACE_PPC_H
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#define __SYS_PTRACE_PPC_H
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#include "linux/types.h"
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/* the following taken from <asm-ppc/ptrace.h> */
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#ifdef CONFIG_PPC64
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#define PPC_REG unsigned long /*long*/
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#else
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#define PPC_REG unsigned long
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#endif
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struct sys_pt_regs_s {
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PPC_REG gpr[32];
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PPC_REG nip;
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PPC_REG msr;
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PPC_REG orig_gpr3; /* Used for restarting system calls */
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PPC_REG ctr;
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PPC_REG link;
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PPC_REG xer;
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PPC_REG ccr;
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PPC_REG mq; /* 601 only (not used at present) */
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/* Used on APUS to hold IPL value. */
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PPC_REG trap; /* Reason for being here */
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PPC_REG dar; /* Fault registers */
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PPC_REG dsisr;
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PPC_REG result; /* Result of a system call */
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};
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#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG))
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struct sys_pt_regs {
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PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)];
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};
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#define UM_MAX_REG (PT_FPR0)
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#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG))
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#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } }
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#define UM_REG(r, n) ((r)->regs[n])
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#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3)
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#define UM_SP(r) UM_REG(r, PT_R1)
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#define UM_IP(r) UM_REG(r, PT_NIP)
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#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR)
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#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0)
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#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3)
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#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4)
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#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5)
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#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6)
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#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7)
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#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8)
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#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG))
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#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG))
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#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG))
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#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG))
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#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG))
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#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG))
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#define UM_SET_SYSCALL_RETURN(_regs, result) \
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do { \
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if (result < 0) { \
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(_regs)->regs[PT_CCR] |= 0x10000000; \
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UM_SYSCALL_RET((_regs)) = -result; \
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} else { \
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UM_SYSCALL_RET((_regs)) = result; \
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} \
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} while(0)
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extern void shove_aux_table(unsigned long sp);
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#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp);
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/* These aren't actually defined. The undefs are just to make sure
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* everyone's clear on the concept.
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*/
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#undef UML_HAVE_GETREGS
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#undef UML_HAVE_GETFPREGS
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#undef UML_HAVE_SETREGS
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#undef UML_HAVE_SETFPREGS
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#endif
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