diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm26/ptrace.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm26/ptrace.h')
-rw-r--r-- | include/asm-arm26/ptrace.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/include/asm-arm26/ptrace.h b/include/asm-arm26/ptrace.h new file mode 100644 index 00000000000..6a46b5ae115 --- /dev/null +++ b/include/asm-arm26/ptrace.h @@ -0,0 +1,104 @@ +#ifndef __ASM_ARM_PTRACE_H +#define __ASM_ARM_PTRACE_H + +#define PTRACE_GETREGS 12 +#define PTRACE_SETREGS 13 +#define PTRACE_GETFPREGS 14 +#define PTRACE_SETFPREGS 15 +#define PTRACE_OLDSETOPTIONS 21 + +/* options set using PTRACE_SETOPTIONS */ +#define PTRACE_O_TRACESYSGOOD 0x00000001 + +#define MODE_USR26 0x00000000 +#define MODE_FIQ26 0x00000001 +#define MODE_IRQ26 0x00000002 +#define MODE_SVC26 0x00000003 +#define MODE_MASK 0x00000003 + +#define PSR_F_BIT 0x04000000 +#define PSR_I_BIT 0x08000000 +#define PSR_V_BIT 0x10000000 +#define PSR_C_BIT 0x20000000 +#define PSR_Z_BIT 0x40000000 +#define PSR_N_BIT 0x80000000 + +#define PCMASK 0xfc000003 + + +#ifndef __ASSEMBLY__ + +#define pc_pointer(v) ((v) & ~PCMASK) /* convert v to pc type address */ +#define instruction_pointer(regs) (pc_pointer((regs)->ARM_pc)) /* get pc */ +#define profile_pc(regs) instruction_pointer(regs) + +/* this struct defines the way the registers are stored on the + stack during a system call. */ + +struct pt_regs { + long uregs[17]; +}; + +#define ARM_pc uregs[15] +#define ARM_lr uregs[14] +#define ARM_sp uregs[13] +#define ARM_ip uregs[12] +#define ARM_fp uregs[11] +#define ARM_r10 uregs[10] +#define ARM_r9 uregs[9] +#define ARM_r8 uregs[8] +#define ARM_r7 uregs[7] +#define ARM_r6 uregs[6] +#define ARM_r5 uregs[5] +#define ARM_r4 uregs[4] +#define ARM_r3 uregs[3] +#define ARM_r2 uregs[2] +#define ARM_r1 uregs[1] +#define ARM_r0 uregs[0] +#define ARM_ORIG_r0 uregs[16] + +#ifdef __KERNEL__ + +#define processor_mode(regs) \ + ((regs)->ARM_pc & MODE_MASK) + +#define user_mode(regs) \ + (processor_mode(regs) == MODE_USR26) + +#define interrupts_enabled(regs) \ + (!((regs)->ARM_pc & PSR_I_BIT)) + +#define fast_interrupts_enabled(regs) \ + (!((regs)->ARM_pc & PSR_F_BIT)) + +#define condition_codes(regs) \ + ((regs)->ARM_pc & (PSR_V_BIT|PSR_C_BIT|PSR_Z_BIT|PSR_N_BIT)) + +/* Are the current registers suitable for user mode? + * (used to maintain security in signal handlers) + */ +static inline int valid_user_regs(struct pt_regs *regs) +{ + if (user_mode(regs) && + (regs->ARM_pc & (PSR_F_BIT | PSR_I_BIT)) == 0) + return 1; + + /* + * force it to be something sensible + */ + regs->ARM_pc &= ~(MODE_MASK | PSR_F_BIT | PSR_I_BIT); + + return 0; +} + +extern void show_regs(struct pt_regs *); + +#define predicate(x) (x & 0xf0000000) +#define PREDICATE_ALWAYS 0xe0000000 + +#endif /* __KERNEL__ */ + +#endif /* __ASSEMBLY__ */ + +#endif + |