1 /* Return -1 on error or 1 on success (never 0!). */ 2 static int get_syscall_args(struct tcb * tcp)3get_syscall_args(struct tcb *tcp) 4 { 5 #if defined LINUX_MIPSN64 || defined LINUX_MIPSN32 6 tcp->u_arg[0] = mips_REG_A0; 7 tcp->u_arg[1] = mips_REG_A1; 8 tcp->u_arg[2] = mips_REG_A2; 9 tcp->u_arg[3] = mips_REG_A3; 10 tcp->u_arg[4] = mips_REG_A4; 11 tcp->u_arg[5] = mips_REG_A5; 12 #elif defined LINUX_MIPSO32 13 tcp->u_arg[0] = mips_REG_A0; 14 tcp->u_arg[1] = mips_REG_A1; 15 tcp->u_arg[2] = mips_REG_A2; 16 tcp->u_arg[3] = mips_REG_A3; 17 if (tcp->s_ent->nargs > 4 18 && umoven(tcp, mips_REG_SP + 4 * sizeof(tcp->u_arg[0]), 19 (tcp->s_ent->nargs - 4) * sizeof(tcp->u_arg[0]), 20 &tcp->u_arg[4]) < 0) { 21 /* 22 * Let's proceed with the first 4 arguments 23 * instead of reporting the failure. 24 */ 25 memset(&tcp->u_arg[4], 0, 26 (tcp->s_ent->nargs - 4) * sizeof(tcp->u_arg[0])); 27 } 28 #else 29 # error unsupported mips abi 30 #endif 31 return 1; 32 } 33