diff options
Diffstat (limited to 'arch/um/os-Linux/registers.c')
| -rw-r--r-- | arch/um/os-Linux/registers.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c index b123955be7ac..d7ca148807b2 100644 --- a/arch/um/os-Linux/registers.c +++ b/arch/um/os-Linux/registers.c @@ -10,31 +10,12 @@ #include <sysdep/ptrace.h> #include <sysdep/ptrace_user.h> #include <registers.h> - -int save_registers(int pid, struct uml_pt_regs *regs) -{ - int err; - - err = ptrace(PTRACE_GETREGS, pid, 0, regs->gp); - if (err < 0) - return -errno; - return 0; -} - -int restore_pid_registers(int pid, struct uml_pt_regs *regs) -{ - int err; - - err = ptrace(PTRACE_SETREGS, pid, 0, regs->gp); - if (err < 0) - return -errno; - return 0; -} +#include <stdlib.h> /* This is set once at boot time and not changed thereafter */ static unsigned long exec_regs[MAX_REG_NR]; -static unsigned long exec_fp_regs[FP_SIZE]; +static unsigned long *exec_fp_regs; int init_pid_registers(int pid) { @@ -44,7 +25,11 @@ int init_pid_registers(int pid) if (err < 0) return -errno; - arch_init_registers(pid); + err = arch_init_registers(pid); + if (err < 0) + return err; + + exec_fp_regs = malloc(host_fp_size); get_fp_registers(pid, exec_fp_regs); return 0; } @@ -54,5 +39,5 @@ void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) memcpy(regs, exec_regs, sizeof(exec_regs)); if (fp_regs) - memcpy(fp_regs, exec_fp_regs, sizeof(exec_fp_regs)); + memcpy(fp_regs, exec_fp_regs, host_fp_size); } |