113 lines
2.1 KiB
C
113 lines
2.1 KiB
C
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/* $Id: linux_exec_alpha.c,v 1.1 2000/11/17 03:55:18 erh Exp $ */
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#define ELFSIZE 64
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/exec.h>
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#include <sys/exec_elf.h>
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#include <compat/linux/common/linux_exec.h>
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/*
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* Alpha specific linux copyargs function.
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*
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* XXX Figure out if this is common to more than one linux
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* XXX port. If so, move it to common/linux_exec_elf32.c
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* XXX included based on some define.
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*/
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void *
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ELFNAME2(linux,copyargs)(struct exec_package *pack, struct ps_strings *arginfo,
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void *stack, void *argp)
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{
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size_t len;
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LinuxAuxInfo ai[LINUX_ELF_AUX_ENTRIES], *a;
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struct elf_args *ap;
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stack = copyargs(pack, arginfo, stack, argp);
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if (!stack)
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return(NULL);
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memset(ai, 0, sizeof(LinuxAuxInfo) * LINUX_ELF_AUX_ENTRIES);
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a = ai;
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/*
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* Push extra arguments on the stack needed by dynamically
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* linked binaries.
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*/
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if ((ap = (struct elf_args *)pack->ep_emul_arg)) {
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a->a_type = AT_PHDR;
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a->a_v = ap->arg_phaddr;
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a++;
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a->a_type = AT_PHENT;
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a->a_v = ap->arg_phentsize;
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a++;
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a->a_type = AT_PHNUM;
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a->a_v = ap->arg_phnum;
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a++;
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a->a_type = AT_PAGESZ;
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a->a_v = NBPG;
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a++;
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a->a_type = AT_BASE;
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a->a_v = ap->arg_interp;
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a++;
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a->a_type = AT_FLAGS;
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a->a_v = 0;
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a++;
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a->a_type = AT_ENTRY;
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a->a_v = ap->arg_entry;
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a++;
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a->a_type = AT_BASE;
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a->a_v = ap->arg_interp;
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a++;
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#if 0
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/*
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* The exec_package doesn't have a proc pointer and it's not
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* exactly trivial to add one since the credentials are changing.
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*/
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a->a_type = LINUX_AT_UID;
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a->a_v = pack->p->p_cred->p_ruid;
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a++;
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a->a_type = LINUX_AT_EUID;
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a->a_v = pack->p->p_ucred->cr_uid;
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a++;
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a->a_type = LINUX_AT_GID;
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a->a_v = pack->p->p_cred->p_rgid;
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a++;
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a->a_type = LINUX_AT_EGID;
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a->a_v = pack->p->p_ucred->cr_gid;
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a++;
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#endif
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free((char *)ap, M_TEMP);
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pack->ep_emul_arg = NULL;
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}
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a->a_type = AT_NULL;
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a->a_v = 0;
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a++;
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len = (a - ai) * sizeof(LinuxAuxInfo);
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if (copyout(ai, stack, len))
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return NULL;
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stack = (caddr_t)stack + len;
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return(stack);
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}
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