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fix PTRACE_PEEKUSER, PTRACE_POKEUSER, PTRACE_GETREGS.

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support PTRACE_SETREGS.
  In struct process, add 'unsigned long *ptrace_debugreg', instead of 'struct user *userp'.
  debug registers are read/written from/to ptrace_debugreg, save/restore in schedule().
  most general registers are proc->uctx.
  fs_base is proc->thread.tlsblock_base.
  gs_base,ds,es,fs,gs and orig_rax are uncompleted.
  other members in 'struct user' are ignored, same as Linux implementation.

refs #257
refs #373
refs #263
This commit is contained in:
Susumu Komae
2015-01-29 14:08:38 +09:00
committed by postpeta
parent 9c35935671
commit c3ade864d9
5 changed files with 296 additions and 98 deletions
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15
arch/x86/kernel/include/registers.h
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@@ -16,8 +16,23 @@
#include <types.h>
#define RFLAGS_CF (1 << 0)
#define RFLAGS_PF (1 << 2)
#define RFLAGS_AF (1 << 4)
#define RFLAGS_ZF (1 << 6)
#define RFLAGS_SF (1 << 7)
#define RFLAGS_TF (1 << 8)
#define RFLAGS_IF (1 << 9)
#define RFLAGS_DF (1 << 10)
#define RFLAGS_OF (1 << 11)
#define RFLAGS_IOPL (3 << 12)
#define RFLAGS_NT (1 << 14)
#define RFLAGS_RF (1 << 16)
#define RFLAGS_VM (1 << 17)
#define RFLAGS_AC (1 << 18)
#define RFLAGS_VIF (1 << 19)
#define RFLAGS_VIP (1 << 20)
#define RFLAGS_ID (1 << 21)
#define MSR_EFER 0xc0000080
#define MSR_STAR 0xc0000081