diff options
Diffstat (limited to 'linux/ia64/get_syscall_args.c')
| -rw-r--r-- | linux/ia64/get_syscall_args.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/linux/ia64/get_syscall_args.c b/linux/ia64/get_syscall_args.c index 1b942eba..ad73c547 100644 --- a/linux/ia64/get_syscall_args.c +++ b/linux/ia64/get_syscall_args.c @@ -1,29 +1,26 @@ +#include <asm/rse.h> + /* Return -1 on error or 1 on success (never 0!). */ static int get_syscall_args(struct tcb *tcp) { - if (!ia64_ia32mode) { - unsigned long *rbs_end = - (unsigned long *) ia64_regs.ar[PT_AUR_BSP]; - unsigned long sof = (ia64_regs.cfm >> 0) & 0x7f; - unsigned long sol = (ia64_regs.cfm >> 7) & 0x7f; - unsigned long *out0 = ia64_rse_skip_regs(rbs_end, -sof + sol); - unsigned int i; + unsigned long *rbs_end = + (unsigned long *) ia64_regs.ar[PT_AUR_BSP]; + unsigned long sof = (ia64_regs.cfm >> 0) & 0x7f; + unsigned long sol = (ia64_regs.cfm >> 7) & 0x7f; + unsigned long *out0 = ia64_rse_skip_regs(rbs_end, -sof + sol); + unsigned int i; - for (i = 0; i < tcp->s_ent->nargs; ++i) { - if (umove(tcp, - (unsigned long) ia64_rse_skip_regs(out0, i), - &tcp->u_arg[i]) < 0) + for (i = 0; i < tcp->s_ent->nargs; ++i) { + if (umove(tcp, + (unsigned long) ia64_rse_skip_regs(out0, i), + &tcp->u_arg[i]) < 0) { + if (errno == EPERM) + tcp->u_arg[i] = 0; + else return -1; } - } else { - /* truncate away IVE sign-extension */ - tcp->u_arg[0] = 0xffffffff & ia64_regs.gr[11]; /* EBX */ - tcp->u_arg[1] = 0xffffffff & ia64_regs.gr[ 9]; /* ECX */ - tcp->u_arg[2] = 0xffffffff & ia64_regs.gr[10]; /* EDX */ - tcp->u_arg[3] = 0xffffffff & ia64_regs.gr[14]; /* ESI */ - tcp->u_arg[4] = 0xffffffff & ia64_regs.gr[15]; /* EDI */ - tcp->u_arg[5] = 0xffffffff & ia64_regs.gr[13]; /* EBP */ } + return 1; } |