1*cf84ac9aSAndroid Build Coastguard Worker /* Return -1 on error or 1 on success (never 0!). */ 2*cf84ac9aSAndroid Build Coastguard Worker static int get_syscall_args(struct tcb * tcp)3*cf84ac9aSAndroid Build Coastguard Workerget_syscall_args(struct tcb *tcp) 4*cf84ac9aSAndroid Build Coastguard Worker { 5*cf84ac9aSAndroid Build Coastguard Worker if (tcp->currpers == 1) { 6*cf84ac9aSAndroid Build Coastguard Worker /* 7*cf84ac9aSAndroid Build Coastguard Worker * Zero-extend from 32 bits. 8*cf84ac9aSAndroid Build Coastguard Worker * Use truncate_klong_to_current_wordsize(tcp->u_arg[N]) 9*cf84ac9aSAndroid Build Coastguard Worker * in syscall handlers 10*cf84ac9aSAndroid Build Coastguard Worker * if you need to use *sign-extended* parameter. 11*cf84ac9aSAndroid Build Coastguard Worker */ 12*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[0] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 0]; 13*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[1] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 1]; 14*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[2] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 2]; 15*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[3] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 3]; 16*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[4] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 4]; 17*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[5] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 5]; 18*cf84ac9aSAndroid Build Coastguard Worker } else { 19*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[0] = sparc_regs.u_regs[U_REG_O0 + 0]; 20*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[1] = sparc_regs.u_regs[U_REG_O0 + 1]; 21*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[2] = sparc_regs.u_regs[U_REG_O0 + 2]; 22*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[3] = sparc_regs.u_regs[U_REG_O0 + 3]; 23*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[4] = sparc_regs.u_regs[U_REG_O0 + 4]; 24*cf84ac9aSAndroid Build Coastguard Worker tcp->u_arg[5] = sparc_regs.u_regs[U_REG_O0 + 5]; 25*cf84ac9aSAndroid Build Coastguard Worker } 26*cf84ac9aSAndroid Build Coastguard Worker 27*cf84ac9aSAndroid Build Coastguard Worker return 1; 28*cf84ac9aSAndroid Build Coastguard Worker } 29