/* $NetBSD: irix_exec.c,v 1.10 2002/01/07 23:12:30 manu Exp $ */ /*- * Copyright (c) 2001-2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Emmanuel Dreyfus. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: irix_exec.c,v 1.10 2002/01/07 23:12:30 manu Exp $"); #ifndef ELFSIZE #define ELFSIZE 32 /* XXX should die */ #endif #include #include #include #include #include #include #include #include #include #include #include #include #include static int ELFNAME2(irix,mipsopt_signature) __P((struct proc *, struct exec_package *epp, Elf_Ehdr *eh)); static void setregs_n32 __P((struct proc *, struct exec_package *, u_long)); extern struct sysent irix_sysent[]; extern const char * const irix_syscallnames[]; extern char irix_sigcode[], irix_esigcode[]; #ifndef __HAVE_SYSCALL_INTERN void irix_syscall __P((void)); #else void irix_syscall_intern __P((struct proc *)); #endif const struct emul emul_irix_o32 = { "irix o32", "/emul/irix", #ifndef __HAVE_MINIMAL_EMUL 0, native_to_irix_errno, IRIX_SYS_syscall, IRIX_SYS_MAXSYSCALL, #endif irix_sysent, #ifdef SYSCALL_DEBUG irix_syscallnames, #else NULL, #endif irix_sendsig, trapsignal, irix_sigcode, irix_esigcode, setregs, NULL, NULL, NULL, #ifdef __HAVE_SYSCALL_INTERN irix_syscall_intern, #else irix_syscall, #endif }; const struct emul emul_irix_n32 = { "irix n32", "/emul/irix", #ifndef __HAVE_MINIMAL_EMUL 0, native_to_irix_errno, IRIX_SYS_syscall, IRIX_SYS_MAXSYSCALL, #endif irix_sysent, #ifdef SYSCALL_DEBUG irix_syscallnames, #else NULL, #endif irix_sendsig, trapsignal, irix_sigcode, irix_esigcode, setregs_n32, NULL, NULL, NULL, #ifdef __HAVE_SYSCALL_INTERN irix_syscall_intern, #else irix_syscall, #endif }; static int ELFNAME2(irix,mipsopt_signature)(p, epp, eh) struct proc *p; struct exec_package *epp; Elf_Ehdr *eh; { size_t shsize; int strndx; size_t i; static const char signature[] = ".MIPS.options"; char* strtable; Elf_Shdr *sh; int error; /* * load the section header table */ shsize = eh->e_shnum * sizeof(Elf_Shdr); sh = (Elf_Shdr *) malloc(shsize, M_TEMP, M_WAITOK); error = exec_read_from(p, epp->ep_vp, eh->e_shoff, sh, shsize); if (error) goto out; /* * Now let's find the string table. If it does not exists, give up. */ strndx = (int)(eh->e_shstrndx); if (strndx == SHN_UNDEF) { error = ENOEXEC; goto out; } /* * strndx is the index in section header table of the string table * section get the whole string table in strtable, and then we * get access to the names * s->sh_name is the offset of the section name in strtable. */ strtable = malloc(sh[strndx].sh_size, M_TEMP, M_WAITOK); error = exec_read_from(p, epp->ep_vp, sh[strndx].sh_offset, strtable, sh[strndx].sh_size); if (error) goto out; for (i = 0; i < eh->e_shnum; i++) { Elf_Shdr *s = &sh[i]; if (!memcmp((void*)(&(strtable[s->sh_name])), signature, sizeof(signature))) { #ifdef DEBUG_IRIX printf("irix_mipsopt_sig=%s\n",&(strtable[s->sh_name])); #endif error = 0; goto out; } } error = ENOEXEC; out: free(sh, M_TEMP); free(strtable, M_TEMP); return (error); } /* * IRIX o32 ABI probe function * Should be run after the IRIX n32 ABI probe function, see comment below */ int ELFNAME2(irix,probe_o32)(p, epp, eh, itp, pos) struct proc *p; struct exec_package *epp; void *eh; char *itp; vaddr_t *pos; { const char *bp; int error; size_t len; #ifdef DEBUG_IRIX printf("irix_probe_o32()\n"); #endif if (itp[0]) { /* o32 binaries use /lib/libc.so.1 */ if (strncmp(itp, "/lib/libc.so", 12) && strncmp(itp, "/usr/lib/libc.so", 16)) return ENOEXEC; if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path, itp, &bp, 0))) return error; if ((error = copystr(bp, itp, MAXPATHLEN, &len))) return error; free((void *)bp, M_TEMP); } *pos = ELF_NO_ADDR; #ifdef DEBUG_IRIX printf("irix_probe_o32: returning 0\n"); printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr); #endif epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL; return 0; } /* * IRIX n32 ABI probe function * This should be run before the IRIX o32 ABI probe function, else * n32 static binaries will be matched as o32 */ int ELFNAME2(irix,probe_n32)(p, epp, eh, itp, pos) struct proc *p; struct exec_package *epp; void *eh; char *itp; vaddr_t *pos; { const char *bp; int error; size_t len; #ifdef DEBUG_IRIX printf("irix_probe_n32()\n"); #endif /* This eliminates o32 static binaries */ if ((error = ELFNAME2(irix,mipsopt_signature)(p, epp, eh)) != 0) return error; if (itp[0]) { /* n32 binaries use /lib32/libc.so.1 */ if (strncmp(itp, "/lib32/libc.so", 14) && strncmp(itp, "/usr/lib32/libc.so", 18)) return ENOEXEC; if ((error = emul_find(p, NULL, epp->ep_esch->es_emul->e_path, itp, &bp, 0))) return error; if ((error = copystr(bp, itp, MAXPATHLEN, &len))) return error; free((void *)bp, M_TEMP); } *pos = ELF_NO_ADDR; #ifdef DEBUG_IRIX printf("irix_prob_n32e: returning 0\n"); printf("epp->ep_vm_minaddr = 0x%lx\n", epp->ep_vm_minaddr); #endif epp->ep_vm_minaddr = epp->ep_vm_minaddr & ~0xfUL; return 0; } /* * set registers on exec for N32 applications */ void setregs_n32(p, pack, stack) struct proc *p; struct exec_package *pack; u_long stack; { struct frame *f = (struct frame *)p->p_md.md_regs; /* Use regular setregs */ setregs(p, pack, stack); /* Enable 64 bit instructions (eg: sd) */ f->f_regs[SR] |= MIPS3_SR_UX; return; }