/* Return -1 on error or 1 on success (never 0!). */
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static int
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get_syscall_args(struct tcb *tcp)
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{
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if (tcp->currpers == 1) {
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/*
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* Zero-extend from 32 bits.
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* Use truncate_klong_to_current_wordsize(tcp->u_arg[N])
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* in syscall handlers
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* if you need to use *sign-extended* parameter.
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*/
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tcp->u_arg[0] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 0];
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tcp->u_arg[1] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 1];
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tcp->u_arg[2] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 2];
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tcp->u_arg[3] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 3];
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tcp->u_arg[4] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 4];
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tcp->u_arg[5] = (uint32_t) sparc_regs.u_regs[U_REG_O0 + 5];
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} else {
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tcp->u_arg[0] = sparc_regs.u_regs[U_REG_O0 + 0];
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tcp->u_arg[1] = sparc_regs.u_regs[U_REG_O0 + 1];
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tcp->u_arg[2] = sparc_regs.u_regs[U_REG_O0 + 2];
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tcp->u_arg[3] = sparc_regs.u_regs[U_REG_O0 + 3];
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tcp->u_arg[4] = sparc_regs.u_regs[U_REG_O0 + 4];
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tcp->u_arg[5] = sparc_regs.u_regs[U_REG_O0 + 5];
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}
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return 1;
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}
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