From 62b14c24b10033591bbab16dea165d696a616f37 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Fri, 26 Oct 2007 00:53:02 +0900 Subject: [PATCH] [MIPS] Store sign-extend register values for PTRACE_GETREGS A comment on ptrace_getregs() states "Registers are sign extended to fill the available space." but it is not true. Fix code to match the comment. Also fix casts on each caller to get rid of some warnings. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/kernel/ptrace.c | 18 +++++++++--------- arch/mips/kernel/ptrace32.c | 4 ++-- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 999f7853de..35234b92b9 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -65,13 +65,13 @@ int ptrace_getregs(struct task_struct *child, __s64 __user *data) regs = task_pt_regs(child); for (i = 0; i < 32; i++) - __put_user(regs->regs[i], data + i); - __put_user(regs->lo, data + EF_LO - EF_R0); - __put_user(regs->hi, data + EF_HI - EF_R0); - __put_user(regs->cp0_epc, data + EF_CP0_EPC - EF_R0); - __put_user(regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0); - __put_user(regs->cp0_status, data + EF_CP0_STATUS - EF_R0); - __put_user(regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0); + __put_user((long)regs->regs[i], data + i); + __put_user((long)regs->lo, data + EF_LO - EF_R0); + __put_user((long)regs->hi, data + EF_HI - EF_R0); + __put_user((long)regs->cp0_epc, data + EF_CP0_EPC - EF_R0); + __put_user((long)regs->cp0_badvaddr, data + EF_CP0_BADVADDR - EF_R0); + __put_user((long)regs->cp0_status, data + EF_CP0_STATUS - EF_R0); + __put_user((long)regs->cp0_cause, data + EF_CP0_CAUSE - EF_R0); return 0; } @@ -390,11 +390,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) } case PTRACE_GETREGS: - ret = ptrace_getregs(child, (__u64 __user *) data); + ret = ptrace_getregs(child, (__s64 __user *) data); break; case PTRACE_SETREGS: - ret = ptrace_setregs(child, (__u64 __user *) data); + ret = ptrace_setregs(child, (__s64 __user *) data); break; case PTRACE_GETFPREGS: diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c index f2bffed94f..76818be6ba 100644 --- a/arch/mips/kernel/ptrace32.c +++ b/arch/mips/kernel/ptrace32.c @@ -346,11 +346,11 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data) } case PTRACE_GETREGS: - ret = ptrace_getregs(child, (__u64 __user *) (__u64) data); + ret = ptrace_getregs(child, (__s64 __user *) (__u64) data); break; case PTRACE_SETREGS: - ret = ptrace_setregs(child, (__u64 __user *) (__u64) data); + ret = ptrace_setregs(child, (__s64 __user *) (__u64) data); break; case PTRACE_GETFPREGS: -- 2.39.5