diff options
Diffstat (limited to 'arch/um/os-Linux/sys-i386/registers.c')
| -rw-r--r-- | arch/um/os-Linux/sys-i386/registers.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c index f171204caa4e..8f1f0ab639b9 100644 --- a/arch/um/os-Linux/sys-i386/registers.c +++ b/arch/um/os-Linux/sys-i386/registers.c @@ -8,9 +8,6 @@ #include "longjmp.h" #include "user.h" -/* XXX These need to use [GS]ETFPXREGS and copy_sc_{to,from}_user_skas needs - * to pass in a sufficiently large buffer - */ int save_fp_registers(int pid, unsigned long *fp_regs) { if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) @@ -25,6 +22,20 @@ int restore_fp_registers(int pid, unsigned long *fp_regs) return 0; } +int save_fpx_registers(int pid, unsigned long *fp_regs) +{ + if(ptrace(PTRACE_GETFPXREGS, pid, 0, fp_regs) < 0) + return -errno; + return 0; +} + +int restore_fpx_registers(int pid, unsigned long *fp_regs) +{ + if(ptrace(PTRACE_SETFPXREGS, pid, 0, fp_regs) < 0) + return -errno; + return 0; +} + unsigned long get_thread_reg(int reg, jmp_buf *buf) { switch(reg){ @@ -36,3 +47,21 @@ unsigned long get_thread_reg(int reg, jmp_buf *buf) return 0; } } + +int have_fpx_regs = 1; + +void arch_init_registers(int pid) +{ + unsigned long fpx_regs[HOST_XFP_SIZE]; + int err; + + err = ptrace(PTRACE_GETFPXREGS, pid, 0, fpx_regs); + if(!err) + return; + + if(errno != EIO) + panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", + errno); + + have_fpx_regs = 0; +} |