diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace32.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace32.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c index 197d49c790ad..297632cba047 100644 --- a/arch/powerpc/kernel/ptrace32.c +++ b/arch/powerpc/kernel/ptrace32.c @@ -67,7 +67,8 @@ static long compat_ptrace_old(struct task_struct *child, long request, /* Macros to workout the correct index for the FPR in the thread struct */ #define FPRNUMBER(i) (((i) - PT_FPR0) >> 1) #define FPRHALF(i) (((i) - PT_FPR0) & 1) -#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) + FPRHALF(i) +#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) * 2 + FPRHALF(i) +#define FPRINDEX_3264(i) (TS_FPRWIDTH * ((i) - PT_FPR0)) long compat_arch_ptrace(struct task_struct *child, compat_long_t request, compat_ulong_t caddr, compat_ulong_t cdata) @@ -168,8 +169,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, CHECK_FULL_REGS(child->thread.regs); if (numReg >= PT_FPR0) { flush_fp_to_thread(child); - tmp = ((unsigned long int *)child->thread.fpr) - [FPRINDEX(numReg)]; + /* get 64 bit FPR */ + tmp = ((u64 *)child->thread.fpr) + [FPRINDEX_3264(numReg)]; } else { /* register within PT_REGS struct */ tmp = ptrace_get_reg(child, numReg); } @@ -262,8 +264,13 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, freg = (freg & 0xfffffffful) | (data << 32); ret = ptrace_put_reg(child, numReg, freg); } else { + u64 *tmp; flush_fp_to_thread(child); - ((unsigned int *)child->thread.regs)[index] = data; + /* get 64 bit FPR ... */ + tmp = &(((u64 *)child->thread.fpr) + [FPRINDEX_3264(numReg)]); + /* ... write the 32 bit part we want */ + ((u32 *)tmp)[index % 2] = data; ret = 0; } break; |