diff options
| author | Thomas Meyer | 2017-07-29 17:03:23 +0200 |
|---|---|---|
| committer | Richard Weinberger | 2017-09-13 22:24:38 +0200 |
| commit | 6f602afda7275c24c20ba38b5b6cd4ed08561fff (patch) | |
| tree | 33ee34f627f020b350fbc351eef16674588c3786 /arch/um/os-Linux | |
| parent | Linux 4.13 (diff) | |
| download | kernel-qcow2-linux-6f602afda7275c24c20ba38b5b6cd4ed08561fff.tar.gz kernel-qcow2-linux-6f602afda7275c24c20ba38b5b6cd4ed08561fff.tar.xz kernel-qcow2-linux-6f602afda7275c24c20ba38b5b6cd4ed08561fff.zip | |
um: Fix FP register size for XSTATE/XSAVE
Hard code max size. Taken from
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/common/x86-xstate.h
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/os-Linux')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 819d68656673..c94c3bd70ccd 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -88,12 +88,11 @@ bad_wait: extern unsigned long current_stub_stack(void); -static void get_skas_faultinfo(int pid, struct faultinfo *fi) +static void get_skas_faultinfo(int pid, struct faultinfo *fi, unsigned long *aux_fp_regs) { int err; - unsigned long fpregs[FP_SIZE]; - err = get_fp_registers(pid, fpregs); + err = get_fp_registers(pid, aux_fp_regs); if (err < 0) { printk(UM_KERN_ERR "save_fp_registers returned %d\n", err); @@ -113,7 +112,7 @@ static void get_skas_faultinfo(int pid, struct faultinfo *fi) */ memcpy(fi, (void *)current_stub_stack(), sizeof(*fi)); - err = put_fp_registers(pid, fpregs); + err = put_fp_registers(pid, aux_fp_regs); if (err < 0) { printk(UM_KERN_ERR "put_fp_registers returned %d\n", err); @@ -121,9 +120,9 @@ static void get_skas_faultinfo(int pid, struct faultinfo *fi) } } -static void handle_segv(int pid, struct uml_pt_regs * regs) +static void handle_segv(int pid, struct uml_pt_regs *regs, unsigned long *aux_fp_regs) { - get_skas_faultinfo(pid, ®s->faultinfo); + get_skas_faultinfo(pid, ®s->faultinfo, aux_fp_regs); segv(regs->faultinfo, 0, 1, NULL); } @@ -332,7 +331,7 @@ int start_userspace(unsigned long stub_stack) return err; } -void userspace(struct uml_pt_regs *regs) +void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs) { int err, status, op, pid = userspace_pid[0]; /* To prevent races if using_sysemu changes under us.*/ @@ -407,11 +406,11 @@ void userspace(struct uml_pt_regs *regs) case SIGSEGV: if (PTRACE_FULL_FAULTINFO) { get_skas_faultinfo(pid, - ®s->faultinfo); + ®s->faultinfo, aux_fp_regs); (*sig_info[SIGSEGV])(SIGSEGV, (struct siginfo *)&si, regs); } - else handle_segv(pid, regs); + else handle_segv(pid, regs, aux_fp_regs); break; case SIGTRAP + 0x80: handle_trap(pid, regs, local_using_sysemu); |