diff options
Diffstat (limited to 'arch/um/os-Linux/registers.c')
| -rw-r--r-- | arch/um/os-Linux/registers.c | 37 |
1 files changed, 11 insertions, 26 deletions
diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c index 2ff8d4fe83c4..bfba2cbc9478 100644 --- a/arch/um/os-Linux/registers.c +++ b/arch/um/os-Linux/registers.c @@ -1,7 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2004 PathScale, Inc * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Licensed under the GPL */ #include <errno.h> @@ -10,33 +10,14 @@ #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_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]; +unsigned long exec_regs[MAX_REG_NR]; +unsigned long *exec_fp_regs; -int init_registers(int pid) +int init_pid_registers(int pid) { int err; @@ -44,7 +25,11 @@ int init_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); } |