| /* Return -1 on error or 1 on success (never 0!). */ |
| static int |
| get_syscall_args(struct tcb *tcp) |
| { |
| #if defined LINUX_MIPSN64 || defined LINUX_MIPSN32 |
| tcp->u_arg[0] = mips_REG_A0; |
| tcp->u_arg[1] = mips_REG_A1; |
| tcp->u_arg[2] = mips_REG_A2; |
| tcp->u_arg[3] = mips_REG_A3; |
| tcp->u_arg[4] = mips_REG_A4; |
| tcp->u_arg[5] = mips_REG_A5; |
| #elif defined LINUX_MIPSO32 |
| tcp->u_arg[0] = mips_REG_A0; |
| tcp->u_arg[1] = mips_REG_A1; |
| tcp->u_arg[2] = mips_REG_A2; |
| tcp->u_arg[3] = mips_REG_A3; |
| if (tcp->s_ent->nargs > 4 |
| && umoven(tcp, mips_REG_SP + 4 * sizeof(tcp->u_arg[0]), |
| (tcp->s_ent->nargs - 4) * sizeof(tcp->u_arg[0]), |
| &tcp->u_arg[4]) < 0) { |
| /* |
| * Let's proceed with the first 4 arguments |
| * instead of reporting the failure. |
| */ |
| memset(&tcp->u_arg[4], 0, |
| (tcp->s_ent->nargs - 4) * sizeof(tcp->u_arg[0])); |
| } |
| #else |
| # error unsupported mips abi |
| #endif |
| return 1; |
| } |