#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
-#include <sys/stat.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include "qemu.h"
#include "disas.h"
+/* from personality.h */
+
+/*
+ * Flags for bug emulation.
+ *
+ * These occupy the top three bytes.
+ */
+enum {
+ ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */
+ FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to descriptors
+ * (signal handling)
+ */
+ MMAP_PAGE_ZERO = 0x0100000,
+ ADDR_COMPAT_LAYOUT = 0x0200000,
+ READ_IMPLIES_EXEC = 0x0400000,
+ ADDR_LIMIT_32BIT = 0x0800000,
+ SHORT_INODE = 0x1000000,
+ WHOLE_SECONDS = 0x2000000,
+ STICKY_TIMEOUTS = 0x4000000,
+ ADDR_LIMIT_3GB = 0x8000000,
+};
+
+/*
+ * Personality types.
+ *
+ * These go in the low byte. Avoid using the top bit, it will
+ * conflict with error returns.
+ */
+enum {
+ PER_LINUX = 0x0000,
+ PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
+ PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
+ PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+ PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
+ PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS |
+ WHOLE_SECONDS | SHORT_INODE,
+ PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
+ PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
+ PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
+ PER_BSD = 0x0006,
+ PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
+ PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
+ PER_LINUX32 = 0x0008,
+ PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
+ PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
+ PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
+ PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
+ PER_RISCOS = 0x000c,
+ PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
+ PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+ PER_OSF4 = 0x000f, /* OSF/1 v4 */
+ PER_HPUX = 0x0010,
+ PER_MASK = 0x00ff,
+};
+
+/*
+ * Return the base personality without flags.
+ */
+#define personality(pers) (pers & PER_MASK)
+
/* this flag is uneffective under linux too, should be deleted */
#ifndef MAP_DENYWRITE
#define MAP_DENYWRITE 0
return global_env->cpuid_features;
}
+#ifdef TARGET_X86_64
+#define ELF_START_MMAP 0x2aaaaab000ULL
+#define elf_check_arch(x) ( ((x) == ELF_ARCH) )
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_X86_64
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->rax = 0;
+ regs->rsp = infop->start_stack;
+ regs->rip = infop->entry;
+}
+
+#else
+
#define ELF_START_MMAP 0x80000000
/*
#define ELF_DATA ELFDATA2LSB
#define ELF_ARCH EM_386
- /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
- starts %edx contains a pointer to a function which might be
- registered using `atexit'. This provides a mean for the
- dynamic linker to call DT_FINI functions for shared libraries
- that have been loaded before the code runs.
-
- A value of 0 tells we have no such handler. */
-#define ELF_PLAT_INIT(_r) _r->edx = 0
-
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->esp = infop->start_stack;
regs->eip = infop->entry;
+
+ /* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program
+ starts %edx contains a pointer to a function which might be
+ registered using `atexit'. This provides a mean for the
+ dynamic linker to call DT_FINI functions for shared libraries
+ that have been loaded before the code runs.
+
+ A value of 0 tells we have no such handler. */
+ regs->edx = 0;
}
+#endif
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
#define ELF_ARCH EM_ARM
-#define ELF_PLAT_INIT(_r) _r->ARM_r0 = 0
-
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
- target_long *stack = (void *)infop->start_stack;
+ abi_long stack = infop->start_stack;
memset(regs, 0, sizeof(*regs));
regs->ARM_cpsr = 0x10;
if (infop->entry & 1)
regs->ARM_cpsr |= CPSR_T;
regs->ARM_pc = infop->entry & 0xfffffffe;
regs->ARM_sp = infop->start_stack;
- regs->ARM_r2 = tswapl(stack[2]); /* envp */
- regs->ARM_r1 = tswapl(stack[1]); /* argv */
+ regs->ARM_r2 = tgetl(stack + 8); /* envp */
+ regs->ARM_r1 = tgetl(stack + 4); /* envp */
/* XXX: it seems that r0 is zeroed after ! */
- // regs->ARM_r0 = tswapl(stack[0]); /* argc */
+ regs->ARM_r0 = 0;
+ /* For uClinux PIC binaries. */
+ /* XXX: Linux does this only on ARM with no MMU (do we care ?) */
+ regs->ARM_r10 = infop->start_data;
}
#define USE_ELF_CORE_DUMP
#define ELF_START_MMAP 0x80000000
-#define elf_check_arch(x) ( (x) == EM_SPARC )
+#ifndef TARGET_ABI32
+#define elf_check_arch(x) ( (x) == EM_SPARCV9 || (x) == EM_SPARC32PLUS )
+#else
+#define elf_check_arch(x) ( (x) == EM_SPARC32PLUS || (x) == EM_SPARC )
+#endif
#define ELF_CLASS ELFCLASS64
#define ELF_DATA ELFDATA2MSB
-#define ELF_ARCH EM_SPARC
+#define ELF_ARCH EM_SPARCV9
-/*XXX*/
-#define ELF_PLAT_INIT(_r)
+#define STACK_BIAS 2047
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
+#ifndef TARGET_ABI32
regs->tstate = 0;
+#endif
regs->pc = infop->entry;
regs->npc = regs->pc + 4;
regs->y = 0;
+#ifdef TARGET_ABI32
regs->u_regs[14] = infop->start_stack - 16 * 4;
+#else
+ if (personality(infop->personality) == PER_LINUX32)
+ regs->u_regs[14] = infop->start_stack - 16 * 4;
+ else
+ regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
+#endif
}
#else
#define ELF_DATA ELFDATA2MSB
#define ELF_ARCH EM_SPARC
-/*XXX*/
-#define ELF_PLAT_INIT(_r)
-
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
regs->psr = 0;
#define ELF_START_MMAP 0x80000000
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+
+#define elf_check_arch(x) ( (x) == EM_PPC64 )
+
+#define ELF_CLASS ELFCLASS64
+
+#else
+
#define elf_check_arch(x) ( (x) == EM_PPC )
#define ELF_CLASS ELFCLASS32
+
+#endif
+
#ifdef TARGET_WORDS_BIGENDIAN
#define ELF_DATA ELFDATA2MSB
#else
#endif
#define ELF_ARCH EM_PPC
-/* Note that isn't exactly what regular kernel does
- * but this is what the ABI wants and is needed to allow
- * execution of PPC BSD programs.
- */
-#define ELF_PLAT_INIT(_r) \
-do { \
- target_ulong *pos = (target_ulong *)bprm->p, tmp = 1; \
- _r->gpr[3] = bprm->argc; \
- _r->gpr[4] = (unsigned long)++pos; \
- for (; tmp != 0; pos++) \
- tmp = *pos; \
- _r->gpr[5] = (unsigned long)pos; \
-} while (0)
-
/*
* We need to put in some extra aux table entries to tell glibc what
* the cache block size is, so it can use the dcbz instruction safely.
static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
{
- _regs->msr = 1 << MSR_PR; /* Set user mode */
+ abi_ulong pos = infop->start_stack;
+ abi_ulong tmp;
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+ abi_ulong entry, toc;
+#endif
+
_regs->gpr[1] = infop->start_stack;
+#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
+ entry = ldq_raw(infop->entry) + infop->load_addr;
+ toc = ldq_raw(infop->entry + 8) + infop->load_addr;
+ _regs->gpr[2] = toc;
+ infop->entry = entry;
+#endif
_regs->nip = infop->entry;
+ /* Note that isn't exactly what regular kernel does
+ * but this is what the ABI wants and is needed to allow
+ * execution of PPC BSD programs.
+ */
+ _regs->gpr[3] = tgetl(pos);
+ pos += sizeof(abi_ulong);
+ _regs->gpr[4] = pos;
+ for (tmp = 1; tmp != 0; pos += sizeof(abi_ulong))
+ tmp = ldl(pos);
+ _regs->gpr[5] = pos;
}
#define USE_ELF_CORE_DUMP
#define elf_check_arch(x) ( (x) == EM_MIPS )
+#ifdef TARGET_MIPS64
+#define ELF_CLASS ELFCLASS64
+#else
#define ELF_CLASS ELFCLASS32
+#endif
#ifdef TARGET_WORDS_BIGENDIAN
#define ELF_DATA ELFDATA2MSB
#else
#endif
#define ELF_ARCH EM_MIPS
-#define ELF_PLAT_INIT(_r)
-
static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
{
- regs->cp0_status = CP0St_UM;
+ regs->cp0_status = 2 << CP0St_KSU;
regs->cp0_epc = infop->entry;
regs->regs[29] = infop->start_stack;
}
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
#endif /* TARGET_MIPS */
+#ifdef TARGET_SH4
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SH )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_SH
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ /* Check other registers XXXXX */
+ regs->pc = infop->entry;
+ regs->regs[15] = infop->start_stack;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+#endif
+
+#ifdef TARGET_CRIS
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_CRIS )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_CRIS
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->erp = infop->entry;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 8192
+
+#endif
+
+#ifdef TARGET_M68K
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_68K )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2MSB
+#define ELF_ARCH EM_68K
+
+/* ??? Does this need to do anything?
+#define ELF_PLAT_INIT(_r) */
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->usp = infop->start_stack;
+ regs->sr = 0;
+ regs->pc = infop->entry;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 8192
+
+#endif
+
+#ifdef TARGET_ALPHA
+
+#define ELF_START_MMAP (0x30000000000ULL)
+
+#define elf_check_arch(x) ( (x) == ELF_ARCH )
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_DATA ELFDATA2MSB
+#define ELF_ARCH EM_ALPHA
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->pc = infop->entry;
+ regs->ps = 8;
+ regs->usp = infop->start_stack;
+ regs->unique = infop->start_data; /* ? */
+ printf("Set unique value to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n",
+ regs->unique, infop->start_data);
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 8192
+
+#endif /* TARGET_ALPHA */
+
#ifndef ELF_PLATFORM
#define ELF_PLATFORM (NULL)
#endif
#define ELF_HWCAP 0
#endif
-#include "elf.h"
-
-/*
- * MAX_ARG_PAGES defines the number of pages allocated for arguments
- * and envelope for the new program. 32 should suffice, this gives
- * a maximum env+arg of 128kB w/4KB pages!
- */
-#define MAX_ARG_PAGES 32
+#ifdef TARGET_ABI32
+#undef ELF_CLASS
+#define ELF_CLASS ELFCLASS32
+#undef bswaptls
+#define bswaptls(ptr) bswap32s(ptr)
+#endif
-/*
- * This structure is used to hold the arguments that are
- * used when loading binaries.
- */
-struct linux_binprm {
- char buf[128];
- unsigned long page[MAX_ARG_PAGES];
- unsigned long p;
- int sh_bang;
- int fd;
- int e_uid, e_gid;
- int argc, envc;
- char * filename; /* Name of binary */
- unsigned long loader, exec;
- int dont_iput; /* binfmt handler has put inode */
-};
+#include "elf.h"
struct exec
{
/* max code+data+bss+brk space allocated to ET_DYN executables */
#define ET_DYN_MAP_SIZE (128 * 1024 * 1024)
-/* from personality.h */
-
-/* Flags for bug emulation. These occupy the top three bytes. */
-#define STICKY_TIMEOUTS 0x4000000
-#define WHOLE_SECONDS 0x2000000
-
-/* Personality types. These go in the low byte. Avoid using the top bit,
- * it will conflict with error returns.
- */
-#define PER_MASK (0x00ff)
-#define PER_LINUX (0x0000)
-#define PER_SVR4 (0x0001 | STICKY_TIMEOUTS)
-#define PER_SVR3 (0x0002 | STICKY_TIMEOUTS)
-#define PER_SCOSVR3 (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)
-#define PER_WYSEV386 (0x0004 | STICKY_TIMEOUTS)
-#define PER_ISCR4 (0x0005 | STICKY_TIMEOUTS)
-#define PER_BSD (0x0006)
-#define PER_XENIX (0x0007 | STICKY_TIMEOUTS)
-
/* Necessary parameters */
-#define NGROUPS 32
-
#define TARGET_ELF_EXEC_PAGESIZE TARGET_PAGE_SIZE
#define TARGET_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(TARGET_ELF_EXEC_PAGESIZE-1))
#define TARGET_ELF_PAGEOFFSET(_v) ((_v) & (TARGET_ELF_EXEC_PAGESIZE-1))
bswaptls(&shdr->sh_entsize);
}
-static void bswap_sym(Elf32_Sym *sym)
+static void bswap_sym(struct elf_sym *sym)
{
bswap32s(&sym->st_name);
- bswap32s(&sym->st_value);
- bswap32s(&sym->st_size);
+ bswaptls(&sym->st_value);
+ bswaptls(&sym->st_size);
bswap16s(&sym->st_shndx);
}
#endif
-static void * get_free_page(void)
-{
- void * retval;
-
- /* User-space version of kernel get_free_page. Returns a page-aligned
- * page-sized chunk of memory.
- */
- retval = (void *)target_mmap(0, qemu_host_page_size, PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-
- if((long)retval == -1) {
- perror("get_free_page");
- exit(-1);
- }
- else {
- return(retval);
- }
-}
-
-static void free_page(void * pageaddr)
-{
- target_munmap((unsigned long)pageaddr, qemu_host_page_size);
-}
-
/*
- * 'copy_string()' copies argument/envelope strings from user
+ * 'copy_elf_strings()' copies argument/envelope strings from user
* memory to free pages in kernel mem. These are in a format ready
* to be put directly into the top of new user memory.
*
*/
-static unsigned long copy_strings(int argc,char ** argv,unsigned long *page,
- unsigned long p)
+static abi_ulong copy_elf_strings(int argc,char ** argv, void **page,
+ abi_ulong p)
{
char *tmp, *tmp1, *pag = NULL;
int len, offset = 0;
--p; --tmp; --len;
if (--offset < 0) {
offset = p % TARGET_PAGE_SIZE;
- pag = (char *) page[p/TARGET_PAGE_SIZE];
+ pag = (char *)page[p/TARGET_PAGE_SIZE];
if (!pag) {
- pag = (char *)get_free_page();
- page[p/TARGET_PAGE_SIZE] = (unsigned long)pag;
+ pag = (char *)malloc(TARGET_PAGE_SIZE);
+ memset(pag, 0, TARGET_PAGE_SIZE);
+ page[p/TARGET_PAGE_SIZE] = pag;
if (!pag)
return 0;
}
return p;
}
-static int in_group_p(gid_t g)
-{
- /* return TRUE if we're in the specified group, FALSE otherwise */
- int ngroup;
- int i;
- gid_t grouplist[NGROUPS];
-
- ngroup = getgroups(NGROUPS, grouplist);
- for(i = 0; i < ngroup; i++) {
- if(grouplist[i] == g) {
- return 1;
- }
- }
- return 0;
-}
-
-static int count(char ** vec)
+static abi_ulong setup_arg_pages(abi_ulong p, struct linux_binprm *bprm,
+ struct image_info *info)
{
- int i;
-
- for(i = 0; *vec; i++) {
- vec++;
- }
-
- return(i);
-}
-
-static int prepare_binprm(struct linux_binprm *bprm)
-{
- struct stat st;
- int mode;
- int retval, id_change;
-
- if(fstat(bprm->fd, &st) < 0) {
- return(-errno);
- }
-
- mode = st.st_mode;
- if(!S_ISREG(mode)) { /* Must be regular file */
- return(-EACCES);
- }
- if(!(mode & 0111)) { /* Must have at least one execute bit set */
- return(-EACCES);
- }
-
- bprm->e_uid = geteuid();
- bprm->e_gid = getegid();
- id_change = 0;
-
- /* Set-uid? */
- if(mode & S_ISUID) {
- bprm->e_uid = st.st_uid;
- if(bprm->e_uid != geteuid()) {
- id_change = 1;
- }
- }
-
- /* Set-gid? */
- /*
- * If setgid is set but no group execute bit then this
- * is a candidate for mandatory locking, not a setgid
- * executable.
- */
- if ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
- bprm->e_gid = st.st_gid;
- if (!in_group_p(bprm->e_gid)) {
- id_change = 1;
- }
- }
-
- memset(bprm->buf, 0, sizeof(bprm->buf));
- retval = lseek(bprm->fd, 0L, SEEK_SET);
- if(retval >= 0) {
- retval = read(bprm->fd, bprm->buf, 128);
- }
- if(retval < 0) {
- perror("prepare_binprm");
- exit(-1);
- /* return(-errno); */
- }
- else {
- return(retval);
- }
-}
-
-unsigned long setup_arg_pages(unsigned long p, struct linux_binprm * bprm,
- struct image_info * info)
-{
- unsigned long stack_base, size, error;
+ abi_ulong stack_base, size, error;
int i;
/* Create enough stack to hold everything. If we don't use
size = x86_stack_size;
if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE)
size = MAX_ARG_PAGES*TARGET_PAGE_SIZE;
- error = target_mmap(0,
+ error = target_mmap(0,
size + qemu_host_page_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS,
stack_base = error + size - MAX_ARG_PAGES*TARGET_PAGE_SIZE;
p += stack_base;
- if (bprm->loader) {
- bprm->loader += stack_base;
- }
- bprm->exec += stack_base;
-
for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
if (bprm->page[i]) {
info->rss++;
- memcpy((void *)stack_base, (void *)bprm->page[i], TARGET_PAGE_SIZE);
- free_page((void *)bprm->page[i]);
+ memcpy_to_target(stack_base, bprm->page[i], TARGET_PAGE_SIZE);
+ free(bprm->page[i]);
}
- stack_base += TARGET_PAGE_SIZE;
+ stack_base += TARGET_PAGE_SIZE;
}
return p;
}
-static void set_brk(unsigned long start, unsigned long end)
+static void set_brk(abi_ulong start, abi_ulong end)
{
/* page-align the start and end addresses... */
start = HOST_PAGE_ALIGN(start);
/* We need to explicitly zero any fractional pages after the data
section (i.e. bss). This would contain the junk from the file that
should not be in memory. */
-static void padzero(unsigned long elf_bss)
+static void padzero(abi_ulong elf_bss, abi_ulong last_bss)
{
- unsigned long nbyte;
- char * fpnt;
+ abi_ulong nbyte;
+
+ if (elf_bss >= last_bss)
+ return;
/* XXX: this is really a hack : if the real host page size is
smaller than the target page size, some pages after the end
patch target_mmap(), but it is more complicated as the file
size must be known */
if (qemu_real_host_page_size < qemu_host_page_size) {
- unsigned long end_addr, end_addr1;
- end_addr1 = (elf_bss + qemu_real_host_page_size - 1) &
+ abi_ulong end_addr, end_addr1;
+ end_addr1 = (elf_bss + qemu_real_host_page_size - 1) &
~(qemu_real_host_page_size - 1);
end_addr = HOST_PAGE_ALIGN(elf_bss);
if (end_addr1 < end_addr) {
- mmap((void *)end_addr1, end_addr - end_addr1,
+ mmap((void *)g2h(end_addr1), end_addr - end_addr1,
PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
}
nbyte = elf_bss & (qemu_host_page_size-1);
if (nbyte) {
nbyte = qemu_host_page_size - nbyte;
- fpnt = (char *) elf_bss;
do {
- *fpnt++ = 0;
+ tput8(elf_bss, 0);
+ elf_bss++;
} while (--nbyte);
}
}
-static unsigned int * create_elf_tables(char *p, int argc, int envc,
- struct elfhdr * exec,
- unsigned long load_addr,
- unsigned long load_bias,
- unsigned long interp_load_addr, int ibcs,
- struct image_info *info)
+
+static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
+ struct elfhdr * exec,
+ abi_ulong load_addr,
+ abi_ulong load_bias,
+ abi_ulong interp_load_addr, int ibcs,
+ struct image_info *info)
{
- target_ulong *argv, *envp;
- target_ulong *sp, *csp;
- target_ulong *u_platform;
+ abi_ulong sp;
+ int size;
+ abi_ulong u_platform;
const char *k_platform;
- int v;
+ const int n = sizeof(elf_addr_t);
- /*
- * Force 16 byte _final_ alignment here for generality.
- */
- sp = (unsigned int *) (~15UL & (unsigned long) p);
- u_platform = NULL;
+ sp = p;
+ u_platform = 0;
k_platform = ELF_PLATFORM;
if (k_platform) {
size_t len = strlen(k_platform) + 1;
- sp -= (len + sizeof(target_ulong) - 1) / sizeof(target_ulong);
- u_platform = (target_ulong *)sp;
- __copy_to_user(u_platform, k_platform, len);
+ sp -= (len + n - 1) & ~(n - 1);
+ u_platform = sp;
+ memcpy_to_target(sp, k_platform, len);
}
- csp = sp;
- csp -= (DLINFO_ITEMS + 1) * 2;
+ /*
+ * Force 16 byte _final_ alignment here for generality.
+ */
+ sp = sp &~ (abi_ulong)15;
+ size = (DLINFO_ITEMS + 1) * 2;
if (k_platform)
- csp -= 2;
+ size += 2;
#ifdef DLINFO_ARCH_ITEMS
- csp -= DLINFO_ARCH_ITEMS*2;
+ size += DLINFO_ARCH_ITEMS * 2;
+#endif
+ size += envc + argc + 2;
+ size += (!ibcs ? 3 : 1); /* argc itself */
+ size *= n;
+ if (size & 15)
+ sp -= 16 - (size & 15);
+
+ /* This is correct because Linux defines
+ * elf_addr_t as Elf32_Off / Elf64_Off
+ */
+#if ELF_CLASS == ELFCLASS32
+#define NEW_AUX_ENT(id, val) do { \
+ sp -= n; tput32(sp, val); \
+ sp -= n; tput32(sp, id); \
+ } while(0)
+#else
+#define NEW_AUX_ENT(id, val) do { \
+ sp -= n; tput64(sp, val); \
+ sp -= n; tput64(sp, id); \
+ } while(0)
#endif
- csp -= envc+1;
- csp -= argc+1;
- csp -= (!ibcs ? 3 : 1); /* argc itself */
- if ((unsigned long)csp & 15UL)
- sp -= ((unsigned long)csp & 15UL) / sizeof(*sp);
-
-#define NEW_AUX_ENT(id, val) \
- sp -= 2; \
- put_user (id, sp); \
- put_user (val, sp + 1)
NEW_AUX_ENT (AT_NULL, 0);
/* There must be exactly DLINFO_ITEMS entries here. */
- NEW_AUX_ENT(AT_PHDR, (target_ulong)(load_addr + exec->e_phoff));
- NEW_AUX_ENT(AT_PHENT, (target_ulong)(sizeof (struct elf_phdr)));
- NEW_AUX_ENT(AT_PHNUM, (target_ulong)(exec->e_phnum));
- NEW_AUX_ENT(AT_PAGESZ, (target_ulong)(TARGET_PAGE_SIZE));
- NEW_AUX_ENT(AT_BASE, (target_ulong)(interp_load_addr));
- NEW_AUX_ENT(AT_FLAGS, (target_ulong)0);
+ NEW_AUX_ENT(AT_PHDR, (abi_ulong)(load_addr + exec->e_phoff));
+ NEW_AUX_ENT(AT_PHENT, (abi_ulong)(sizeof (struct elf_phdr)));
+ NEW_AUX_ENT(AT_PHNUM, (abi_ulong)(exec->e_phnum));
+ NEW_AUX_ENT(AT_PAGESZ, (abi_ulong)(TARGET_PAGE_SIZE));
+ NEW_AUX_ENT(AT_BASE, (abi_ulong)(interp_load_addr));
+ NEW_AUX_ENT(AT_FLAGS, (abi_ulong)0);
NEW_AUX_ENT(AT_ENTRY, load_bias + exec->e_entry);
- NEW_AUX_ENT(AT_UID, (target_ulong) getuid());
- NEW_AUX_ENT(AT_EUID, (target_ulong) geteuid());
- NEW_AUX_ENT(AT_GID, (target_ulong) getgid());
- NEW_AUX_ENT(AT_EGID, (target_ulong) getegid());
- NEW_AUX_ENT(AT_HWCAP, (target_ulong) ELF_HWCAP);
+ NEW_AUX_ENT(AT_UID, (abi_ulong) getuid());
+ NEW_AUX_ENT(AT_EUID, (abi_ulong) geteuid());
+ NEW_AUX_ENT(AT_GID, (abi_ulong) getgid());
+ NEW_AUX_ENT(AT_EGID, (abi_ulong) getegid());
+ NEW_AUX_ENT(AT_HWCAP, (abi_ulong) ELF_HWCAP);
if (k_platform)
- NEW_AUX_ENT(AT_PLATFORM, (target_ulong) u_platform);
+ NEW_AUX_ENT(AT_PLATFORM, u_platform);
#ifdef ARCH_DLINFO
- /*
+ /*
* ARCH_DLINFO must come last so platform specific code can enforce
* special alignment requirements on the AUXV if necessary (eg. PPC).
*/
#endif
#undef NEW_AUX_ENT
- sp -= envc+1;
- envp = sp;
- sp -= argc+1;
- argv = sp;
- if (!ibcs) {
- put_user((target_ulong)envp,--sp);
- put_user((target_ulong)argv,--sp);
- }
- put_user(argc,--sp);
- info->arg_start = (unsigned int)((unsigned long)p & 0xffffffff);
- while (argc-->0) {
- put_user((target_ulong)p,argv++);
- do {
- get_user(v, p);
- p++;
- } while (v != 0);
- }
- put_user(0,argv);
- info->arg_end = info->env_start = (unsigned int)((unsigned long)p & 0xffffffff);
- while (envc-->0) {
- put_user((target_ulong)p,envp++);
- do {
- get_user(v, p);
- p++;
- } while (v != 0);
- }
- put_user(0,envp);
- info->env_end = (unsigned int)((unsigned long)p & 0xffffffff);
+ sp = loader_build_argptr(envc, argc, sp, p, !ibcs);
return sp;
}
-
-static unsigned long load_elf_interp(struct elfhdr * interp_elf_ex,
- int interpreter_fd,
- unsigned long *interp_load_addr)
+static abi_ulong load_elf_interp(struct elfhdr * interp_elf_ex,
+ int interpreter_fd,
+ abi_ulong *interp_load_addr)
{
struct elf_phdr *elf_phdata = NULL;
struct elf_phdr *eppnt;
- unsigned long load_addr = 0;
+ abi_ulong load_addr = 0;
int load_addr_set = 0;
int retval;
- unsigned long last_bss, elf_bss;
- unsigned long error;
+ abi_ulong last_bss, elf_bss;
+ abi_ulong error;
int i;
-
+
elf_bss = 0;
last_bss = 0;
error = 0;
bswap_ehdr(interp_elf_ex);
#endif
/* First of all, some simple consistency checks */
- if ((interp_elf_ex->e_type != ET_EXEC &&
- interp_elf_ex->e_type != ET_DYN) ||
+ if ((interp_elf_ex->e_type != ET_EXEC &&
+ interp_elf_ex->e_type != ET_DYN) ||
!elf_check_arch(interp_elf_ex->e_machine)) {
- return ~0UL;
+ return ~((abi_ulong)0UL);
}
-
+
/* Now read in all of the header information */
-
+
if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > TARGET_PAGE_SIZE)
- return ~0UL;
-
- elf_phdata = (struct elf_phdr *)
+ return ~(abi_ulong)0UL;
+
+ elf_phdata = (struct elf_phdr *)
malloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
if (!elf_phdata)
- return ~0UL;
-
+ return ~((abi_ulong)0UL);
+
/*
* If the size of this structure has changed, then punt, since
* we will be doing the wrong thing.
*/
if (interp_elf_ex->e_phentsize != sizeof(struct elf_phdr)) {
free(elf_phdata);
- return ~0UL;
+ return ~((abi_ulong)0UL);
}
retval = lseek(interpreter_fd, interp_elf_ex->e_phoff, SEEK_SET);
#endif
if (interp_elf_ex->e_type == ET_DYN) {
- /* in order to avoid harcoding the interpreter load
+ /* in order to avoid hardcoding the interpreter load
address in qemu, we allocate a big enough memory zone */
error = target_mmap(0, INTERP_MAP_SIZE,
- PROT_NONE, MAP_PRIVATE | MAP_ANON,
+ PROT_NONE, MAP_PRIVATE | MAP_ANON,
-1, 0);
if (error == -1) {
perror("mmap");
if (eppnt->p_type == PT_LOAD) {
int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
int elf_prot = 0;
- unsigned long vaddr = 0;
- unsigned long k;
+ abi_ulong vaddr = 0;
+ abi_ulong k;
if (eppnt->p_flags & PF_R) elf_prot = PROT_READ;
if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
elf_type,
interpreter_fd,
eppnt->p_offset - TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr));
-
- if (error > -1024UL) {
+
+ if (error == -1) {
/* Real error */
close(interpreter_fd);
free(elf_phdata);
- return ~0UL;
+ return ~((abi_ulong)0UL);
}
if (!load_addr_set && interp_elf_ex->e_type == ET_DYN) {
k = load_addr + eppnt->p_memsz + eppnt->p_vaddr;
if (k > last_bss) last_bss = k;
}
-
+
/* Now use mmap to map the library into memory. */
close(interpreter_fd);
* that there are zeromapped pages up to and including the last
* bss page.
*/
- padzero(elf_bss);
+ padzero(elf_bss, last_bss);
elf_bss = TARGET_ELF_PAGESTART(elf_bss + qemu_host_page_size - 1); /* What we have mapped so far */
/* Map the last of the bss segment */
free(elf_phdata);
*interp_load_addr = load_addr;
- return ((unsigned long) interp_elf_ex->e_entry) + load_addr;
+ return ((abi_ulong) interp_elf_ex->e_entry) + load_addr;
}
/* Best attempt to load symbols from this ELF object. */
struct elf_shdr sechdr, symtab, strtab;
char *strings;
struct syminfo *s;
+#if (ELF_CLASS == ELFCLASS64)
+ // Disas uses 32 bit symbols
+ struct elf32_sym *syms32 = NULL;
+ struct elf_sym *sym;
+#endif
lseek(fd, hdr->e_shoff, SEEK_SET);
for (i = 0; i < hdr->e_shnum; i++) {
/* Now know where the strtab and symtab are. Snarf them. */
s = malloc(sizeof(*s));
s->disas_symtab = malloc(symtab.sh_size);
+#if (ELF_CLASS == ELFCLASS64)
+ syms32 = malloc(symtab.sh_size / sizeof(struct elf_sym)
+ * sizeof(struct elf32_sym));
+#endif
s->disas_strtab = strings = malloc(strtab.sh_size);
if (!s->disas_symtab || !s->disas_strtab)
return;
-
+
lseek(fd, symtab.sh_offset, SEEK_SET);
if (read(fd, s->disas_symtab, symtab.sh_size) != symtab.sh_size)
return;
+ for (i = 0; i < symtab.sh_size / sizeof(struct elf_sym); i++) {
#ifdef BSWAP_NEEDED
- for (i = 0; i < symtab.sh_size / sizeof(struct elf_sym); i++)
bswap_sym(s->disas_symtab + sizeof(struct elf_sym)*i);
#endif
+#if (ELF_CLASS == ELFCLASS64)
+ sym = s->disas_symtab + sizeof(struct elf_sym)*i;
+ syms32[i].st_name = sym->st_name;
+ syms32[i].st_info = sym->st_info;
+ syms32[i].st_other = sym->st_other;
+ syms32[i].st_shndx = sym->st_shndx;
+ syms32[i].st_value = sym->st_value & 0xffffffff;
+ syms32[i].st_size = sym->st_size & 0xffffffff;
+#endif
+ }
+#if (ELF_CLASS == ELFCLASS64)
+ free(s->disas_symtab);
+ s->disas_symtab = syms32;
+#endif
lseek(fd, strtab.sh_offset, SEEK_SET);
if (read(fd, strings, strtab.sh_size) != strtab.sh_size)
return;
syminfos = s;
}
-static int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
- struct image_info * info)
+int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
+ struct image_info * info)
{
struct elfhdr elf_ex;
struct elfhdr interp_elf_ex;
struct exec interp_ex;
int interpreter_fd = -1; /* avoid warning */
- unsigned long load_addr, load_bias;
+ abi_ulong load_addr, load_bias;
int load_addr_set = 0;
unsigned int interpreter_type = INTERPRETER_NONE;
unsigned char ibcs2_interpreter;
int i;
- unsigned long mapped_addr;
+ abi_ulong mapped_addr;
struct elf_phdr * elf_ppnt;
struct elf_phdr *elf_phdata;
- unsigned long elf_bss, k, elf_brk;
+ abi_ulong elf_bss, k, elf_brk;
int retval;
char * elf_interpreter;
- unsigned long elf_entry, interp_load_addr = 0;
+ abi_ulong elf_entry, interp_load_addr = 0;
int status;
- unsigned long start_code, end_code, end_data;
- unsigned long elf_stack;
+ abi_ulong start_code, end_code, start_data, end_data;
+ abi_ulong reloc_func_desc = 0;
+ abi_ulong elf_stack;
char passed_fileno[6];
ibcs2_interpreter = 0;
bswap_ehdr(&elf_ex);
#endif
- if (elf_ex.e_ident[0] != 0x7f ||
- strncmp(&elf_ex.e_ident[1], "ELF",3) != 0) {
- return -ENOEXEC;
- }
-
/* First of all, some simple consistency checks */
if ((elf_ex.e_type != ET_EXEC && elf_ex.e_type != ET_DYN) ||
(! elf_check_arch(elf_ex.e_machine))) {
return -ENOEXEC;
}
+ bprm->p = copy_elf_strings(1, &bprm->filename, bprm->page, bprm->p);
+ bprm->p = copy_elf_strings(bprm->envc,bprm->envp,bprm->page,bprm->p);
+ bprm->p = copy_elf_strings(bprm->argc,bprm->argv,bprm->page,bprm->p);
+ if (!bprm->p) {
+ retval = -E2BIG;
+ }
+
/* Now read in all of the header information */
elf_phdata = (struct elf_phdr *)malloc(elf_ex.e_phentsize*elf_ex.e_phnum);
if (elf_phdata == NULL) {
retval = lseek(bprm->fd, elf_ex.e_phoff, SEEK_SET);
if(retval > 0) {
- retval = read(bprm->fd, (char *) elf_phdata,
+ retval = read(bprm->fd, (char *) elf_phdata,
elf_ex.e_phentsize * elf_ex.e_phnum);
}
elf_brk = 0;
- elf_stack = ~0UL;
+ elf_stack = ~((abi_ulong)0UL);
elf_interpreter = NULL;
- start_code = ~0UL;
+ start_code = ~((abi_ulong)0UL);
end_code = 0;
+ start_data = 0;
end_data = 0;
for(i=0;i < elf_ex.e_phnum; i++) {
if(retval < 0) {
perror("load_elf_binary2");
exit(-1);
- }
+ }
/* If the program interpreter is one of these two,
then assume an iBCS2 image. Otherwise assume
/* OK, we are done with that, now set up the arg stuff,
and then start this sucker up */
- if (!bprm->sh_bang) {
+ {
char * passed_p;
if (interpreter_type == INTERPRETER_AOUT) {
passed_p = passed_fileno;
if (elf_interpreter) {
- bprm->p = copy_strings(1,&passed_p,bprm->page,bprm->p);
+ bprm->p = copy_elf_strings(1,&passed_p,bprm->page,bprm->p);
bprm->argc++;
}
}
/* OK, This is the point of no return */
info->end_data = 0;
info->end_code = 0;
- info->start_mmap = (unsigned long)ELF_START_MMAP;
+ info->start_mmap = (abi_ulong)ELF_START_MMAP;
info->mmap = 0;
- elf_entry = (unsigned long) elf_ex.e_entry;
+ elf_entry = (abi_ulong) elf_ex.e_entry;
/* Do this so that we can load the interpreter, if need be. We will
change some of these later */
for(i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum; i++, elf_ppnt++) {
int elf_prot = 0;
int elf_flags = 0;
- unsigned long error;
-
+ abi_ulong error;
+
if (elf_ppnt->p_type != PT_LOAD)
continue;
-
+
if (elf_ppnt->p_flags & PF_R) elf_prot |= PROT_READ;
if (elf_ppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
if (elf_ppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
base, as well as whatever program they might try to exec. This
is because the brk will follow the loader, and is not movable. */
/* NOTE: for qemu, we do a big mmap to get enough space
- without harcoding any address */
+ without hardcoding any address */
error = target_mmap(0, ET_DYN_MAP_SIZE,
- PROT_NONE, MAP_PRIVATE | MAP_ANON,
+ PROT_NONE, MAP_PRIVATE | MAP_ANON,
-1, 0);
if (error == -1) {
perror("mmap");
}
load_bias = TARGET_ELF_PAGESTART(error - elf_ppnt->p_vaddr);
}
-
+
error = target_mmap(TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr),
(elf_ppnt->p_filesz +
TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)),
elf_prot,
(MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
bprm->fd,
- (elf_ppnt->p_offset -
+ (elf_ppnt->p_offset -
TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)));
if (error == -1) {
perror("mmap");
if (TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr) < elf_stack)
elf_stack = TARGET_ELF_PAGESTART(elf_ppnt->p_vaddr);
#endif
-
+
if (!load_addr_set) {
load_addr_set = 1;
load_addr = elf_ppnt->p_vaddr - elf_ppnt->p_offset;
load_bias += error -
TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr);
load_addr += load_bias;
+ reloc_func_desc = load_bias;
}
}
k = elf_ppnt->p_vaddr;
- if (k < start_code)
+ if (k < start_code)
start_code = k;
+ if (start_data < k)
+ start_data = k;
k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz;
- if (k > elf_bss)
+ if (k > elf_bss)
elf_bss = k;
if ((elf_ppnt->p_flags & PF_X) && end_code < k)
end_code = k;
- if (end_data < k)
+ if (end_data < k)
end_data = k;
k = elf_ppnt->p_vaddr + elf_ppnt->p_memsz;
if (k > elf_brk) elf_brk = k;
elf_brk += load_bias;
start_code += load_bias;
end_code += load_bias;
- // start_data += load_bias;
+ start_data += load_bias;
end_data += load_bias;
if (elf_interpreter) {
elf_entry = load_elf_interp(&interp_elf_ex, interpreter_fd,
&interp_load_addr);
}
+ reloc_func_desc = interp_load_addr;
close(interpreter_fd);
free(elf_interpreter);
- if (elf_entry == ~0UL) {
+ if (elf_entry == ~((abi_ulong)0UL)) {
printf("Unable to load interpreter\n");
free(elf_phdata);
exit(-1);
#ifdef LOW_ELF_STACK
info->start_stack = bprm->p = elf_stack - 4;
#endif
- bprm->p = (unsigned long)
- create_elf_tables((char *)bprm->p,
+ bprm->p = create_elf_tables(bprm->p,
bprm->argc,
bprm->envc,
&elf_ex,
interp_load_addr,
(interpreter_type == INTERPRETER_AOUT ? 0 : 1),
info);
- if (interpreter_type == INTERPRETER_AOUT)
- info->arg_start += strlen(passed_fileno) + 1;
+ info->load_addr = reloc_func_desc;
info->start_brk = info->brk = elf_brk;
info->end_code = end_code;
info->start_code = start_code;
+ info->start_data = start_data;
info->end_data = end_data;
info->start_stack = bprm->p;
sections */
set_brk(elf_bss, elf_brk);
- padzero(elf_bss);
+ padzero(elf_bss, elf_brk);
#if 0
printf("(start_brk) %x\n" , info->start_brk);
MAP_FIXED | MAP_PRIVATE, -1, 0);
}
-#ifdef ELF_PLAT_INIT
- /*
- * The ABI may specify that certain registers be set up in special
- * ways (on i386 %edx is the address of a DT_FINI function, for
- * example. This macro performs whatever initialization to
- * the regs structure is required.
- */
- ELF_PLAT_INIT(regs);
-#endif
-
-
info->entry = elf_entry;
return 0;
}
-
-
-int elf_exec(const char * filename, char ** argv, char ** envp,
- struct target_pt_regs * regs, struct image_info *infop)
-{
- struct linux_binprm bprm;
- int retval;
- int i;
-
- bprm.p = TARGET_PAGE_SIZE*MAX_ARG_PAGES-sizeof(unsigned int);
- for (i=0 ; i<MAX_ARG_PAGES ; i++) /* clear page-table */
- bprm.page[i] = 0;
- retval = open(filename, O_RDONLY);
- if (retval < 0)
- return retval;
- bprm.fd = retval;
- bprm.filename = (char *)filename;
- bprm.sh_bang = 0;
- bprm.loader = 0;
- bprm.exec = 0;
- bprm.dont_iput = 0;
- bprm.argc = count(argv);
- bprm.envc = count(envp);
-
- retval = prepare_binprm(&bprm);
-
- if(retval>=0) {
- bprm.p = copy_strings(1, &bprm.filename, bprm.page, bprm.p);
- bprm.exec = bprm.p;
- bprm.p = copy_strings(bprm.envc,envp,bprm.page,bprm.p);
- bprm.p = copy_strings(bprm.argc,argv,bprm.page,bprm.p);
- if (!bprm.p) {
- retval = -E2BIG;
- }
- }
-
- if(retval>=0) {
- retval = load_elf_binary(&bprm,regs,infop);
- }
- if(retval>=0) {
- /* success. Initialize important registers */
- init_thread(regs, infop);
- return retval;
- }
-
- /* Something went wrong, return the inode and free the argument pages*/
- for (i=0 ; i<MAX_ARG_PAGES ; i++) {
- free_page((void *)bprm.page[i]);
- }
- return(retval);
-}
-
-
static int load_aout_interp(void * exptr, int interp_fd)
{
printf("a.out interpreter not yet supported\n");
return(0);
}
+void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ init_thread(regs, infop);
+}
projects / qemu.git / blobdiff