diff options
| author |   Helge Deller <deller@gmx.de> | 2016-04-01 22:40:53 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-05-22 21:39:13 +0200 |
| commit | 64e2a42bca12e408f0258c56adcf3595bcd116e7 (patch) | |
| tree | e5eebe549a2ad377e5fc91dae35c052a4747689c /arch/parisc/include | |
| parent | parisc: Add 64bit get_user() and put_user() for 32bit kernel (diff) | |
| download | linux-dev-64e2a42bca12e408f0258c56adcf3595bcd116e7.tar.xz linux-dev-64e2a42bca12e408f0258c56adcf3595bcd116e7.zip | |
parisc: Add ARCH_TRACEHOOK and regset support
By adding TRACEHOOK support we now get a clean user interface to access
registers via PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and
PTRACE_SETFPREGS.
The user-visible regset struct user_regs_struct and user_fp_struct are
modelled similiar to x86 and can be accessed via PTRACE_GETREGSET.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include')
| -rw-r--r-- | arch/parisc/include/uapi/asm/ptrace.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/parisc/include/uapi/asm/ptrace.h b/arch/parisc/include/uapi/asm/ptrace.h index c4fa6c8b9ad9..02ce2eb99a7f 100644 --- a/arch/parisc/include/uapi/asm/ptrace.h +++ b/arch/parisc/include/uapi/asm/ptrace.h @@ -13,6 +13,11 @@ * N.B. gdb/strace care about the size and offsets within this * structure. If you change things, you may break object compatibility * for those applications. + * + * Please do NOT use this structure for future programs, but use + * user_regs_struct (see below) instead. + * + * It can be accessed through PTRACE_PEEKUSR/PTRACE_POKEUSR only. */ struct pt_regs { @@ -33,6 +38,45 @@ struct pt_regs { unsigned long ipsw; /* CR22 */ }; +/** + * struct user_regs_struct - User general purpose registers + * + * This is the user-visible general purpose register state structure + * which is used to define the elf_gregset_t. + * + * It can be accessed through PTRACE_GETREGSET with NT_PRSTATUS + * and through PTRACE_GETREGS. + */ +struct user_regs_struct { + unsigned long gr[32]; /* PSW is in gr[0] */ + unsigned long sr[8]; + unsigned long iaoq[2]; + unsigned long iasq[2]; + unsigned long sar; /* CR11 */ + unsigned long iir; /* CR19 */ + unsigned long isr; /* CR20 */ + unsigned long ior; /* CR21 */ + unsigned long ipsw; /* CR22 */ + unsigned long cr0; + unsigned long cr24, cr25, cr26, cr27, cr28, cr29, cr30, cr31; + unsigned long cr8, cr9, cr12, cr13, cr10, cr15; + unsigned long _pad[80-64]; /* pad to ELF_NGREG (80) */ +}; + +/** + * struct user_fp_struct - User floating point registers + * + * This is the user-visible floating point register state structure. + * It uses the same layout and size as elf_fpregset_t. + * + * It can be accessed through PTRACE_GETREGSET with NT_PRFPREG + * and through PTRACE_GETFPREGS. + */ +struct user_fp_struct { + __u64 fr[32]; +}; + + /* * The numbers chosen here are somewhat arbitrary but absolutely MUST * not overlap with any of the number assigned in <linux/ptrace.h>. @@ -43,5 +87,9 @@ struct pt_regs { */ #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */ +#define PTRACE_GETREGS 18 +#define PTRACE_SETREGS 19 +#define PTRACE_GETFPREGS 14 +#define PTRACE_SETFPREGS 15 #endif /* _UAPI_PARISC_PTRACE_H */ |