#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"
+/* this flag is uneffective under linux too, should be deleted */
+#ifndef MAP_DENYWRITE
+#define MAP_DENYWRITE 0
+#endif
+
+/* should probably go in elf.h */
+#ifndef ELIBBAD
+#define ELIBBAD 80
+#endif
+
#ifdef TARGET_I386
-#define ELF_START_MMAP 0x80000000
+#define ELF_PLATFORM get_elf_platform()
+
+static const char *get_elf_platform(void)
+{
+ static char elf_platform[] = "i386";
+ int family = (global_env->cpuid_version >> 8) & 0xff;
+ if (family > 6)
+ family = 6;
+ if (family >= 3)
+ elf_platform[1] = '0' + family;
+ return elf_platform;
+}
-typedef uint32_t elf_greg_t;
+#define ELF_HWCAP get_elf_hwcap()
-#define ELF_NGREG (sizeof (struct target_pt_regs) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+static uint32_t get_elf_hwcap(void)
+{
+ return global_env->cpuid_features;
+}
-typedef struct user_i387_struct elf_fpregset_t;
+#define ELF_START_MMAP 0x80000000
/*
* This is used to ensure we don't load something for the wrong architecture.
#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.
+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. */
-#define ELF_PLAT_INIT(_r) _r->edx = 0
+ A value of 0 tells we have no such handler. */
+ regs->edx = 0;
+}
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
#endif
-#include "elf.h"
+#ifdef TARGET_ARM
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_ARM )
+
+#define ELF_CLASS ELFCLASS32
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA ELFDATA2MSB
+#else
+#define ELF_DATA ELFDATA2LSB
+#endif
+#define ELF_ARCH EM_ARM
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ target_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 = tgetl(stack + 8); /* envp */
+ regs->ARM_r1 = tgetl(stack + 4); /* envp */
+ /* XXX: it seems that r0 is zeroed after ! */
+ regs->ARM_r0 = 0;
+ /* For uClinux PIC binaries. */
+ regs->ARM_r10 = infop->start_data;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+enum
+{
+ ARM_HWCAP_ARM_SWP = 1 << 0,
+ ARM_HWCAP_ARM_HALF = 1 << 1,
+ ARM_HWCAP_ARM_THUMB = 1 << 2,
+ ARM_HWCAP_ARM_26BIT = 1 << 3,
+ ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
+ ARM_HWCAP_ARM_FPA = 1 << 5,
+ ARM_HWCAP_ARM_VFP = 1 << 6,
+ ARM_HWCAP_ARM_EDSP = 1 << 7,
+};
+
+#define ELF_HWCAP (ARM_HWCAP_ARM_SWP | ARM_HWCAP_ARM_HALF \
+ | ARM_HWCAP_ARM_THUMB | ARM_HWCAP_ARM_FAST_MULT \
+ | ARM_HWCAP_ARM_FPA | ARM_HWCAP_ARM_VFP)
+
+#endif
+
+#ifdef TARGET_SPARC
+#ifdef TARGET_SPARC64
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SPARCV9 )
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_DATA ELFDATA2MSB
+#define ELF_ARCH EM_SPARCV9
+
+#define STACK_BIAS 2047
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->tstate = 0;
+ regs->pc = infop->entry;
+ regs->npc = regs->pc + 4;
+ regs->y = 0;
+ regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
+}
+
+#else
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_SPARC )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2MSB
+#define ELF_ARCH EM_SPARC
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->psr = 0;
+ regs->pc = infop->entry;
+ regs->npc = regs->pc + 4;
+ regs->y = 0;
+ regs->u_regs[14] = infop->start_stack - 16 * 4;
+}
+
+#endif
+#endif
+
+#ifdef TARGET_PPC
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_PPC )
+
+#define ELF_CLASS ELFCLASS32
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA ELFDATA2MSB
+#else
+#define ELF_DATA ELFDATA2LSB
+#endif
+#define ELF_ARCH EM_PPC
/*
- * 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!
+ * 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.
*/
-#define MAX_ARG_PAGES 32
-
+#define AT_DCACHEBSIZE 19
+#define AT_ICACHEBSIZE 20
+#define AT_UCACHEBSIZE 21
+/* A special ignored type value for PPC, for glibc compatibility. */
+#define AT_IGNOREPPC 22
/*
- * This structure is used to hold the arguments that are
- * used when loading binaries.
+ * The requirements here are:
+ * - keep the final alignment of sp (sp & 0xf)
+ * - make sure the 32-bit value at the first 16 byte aligned position of
+ * AUXV is greater than 16 for glibc compatibility.
+ * AT_IGNOREPPC is used for that.
+ * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
+ * even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
*/
-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 */
-};
+#define DLINFO_ARCH_ITEMS 5
+#define ARCH_DLINFO \
+do { \
+ NEW_AUX_ENT(AT_DCACHEBSIZE, 0x20); \
+ NEW_AUX_ENT(AT_ICACHEBSIZE, 0x20); \
+ NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
+ /* \
+ * Now handle glibc compatibility. \
+ */ \
+ NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
+ NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \
+ } while (0)
+
+static inline void init_thread(struct target_pt_regs *_regs, struct image_info *infop)
+{
+ target_ulong pos = infop->start_stack;
+ target_ulong tmp;
+
+ _regs->msr = 1 << MSR_PR; /* Set user mode */
+ _regs->gpr[1] = infop->start_stack;
+ _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(target_ulong);
+ _regs->gpr[4] = pos;
+ for (tmp = 1; tmp != 0; pos += sizeof(target_ulong))
+ tmp = ldl(pos);
+ _regs->gpr[5] = pos;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+#endif
+
+#ifdef TARGET_MIPS
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_MIPS )
+
+#define ELF_CLASS ELFCLASS32
+#ifdef TARGET_WORDS_BIGENDIAN
+#define ELF_DATA ELFDATA2MSB
+#else
+#define ELF_DATA ELFDATA2LSB
+#endif
+#define ELF_ARCH EM_MIPS
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->cp0_status = CP0St_UM;
+ regs->cp0_epc = infop->entry;
+ regs->regs[29] = infop->start_stack;
+}
+
+#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 - 16 * 4;
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+#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
+
+#ifndef ELF_PLATFORM
+#define ELF_PLATFORM (NULL)
+#endif
+
+#ifndef ELF_HWCAP
+#define ELF_HWCAP 0
+#endif
+
+#include "elf.h"
struct exec
{
#define ZMAGIC 0413
#define QMAGIC 0314
-#define X86_STACK_TOP 0x7d000000
-
/* max code+data+bss space allocated to elf interpreter */
#define INTERP_MAP_SIZE (32 * 1024 * 1024)
#define PER_XENIX (0x0007 | STICKY_TIMEOUTS)
/* Necessary parameters */
-#define ALPHA_PAGE_SIZE 4096
-#define X86_PAGE_SIZE 4096
-
-#define ALPHA_PAGE_MASK (~(ALPHA_PAGE_SIZE-1))
-#define X86_PAGE_MASK (~(X86_PAGE_SIZE-1))
-
-#define ALPHA_PAGE_ALIGN(addr) ((((addr)+ALPHA_PAGE_SIZE)-1)&ALPHA_PAGE_MASK)
-#define X86_PAGE_ALIGN(addr) ((((addr)+X86_PAGE_SIZE)-1)&X86_PAGE_MASK)
-
-#define NGROUPS 32
-
-#define X86_ELF_EXEC_PAGESIZE X86_PAGE_SIZE
-#define X86_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(X86_ELF_EXEC_PAGESIZE-1))
-#define X86_ELF_PAGEOFFSET(_v) ((_v) & (X86_ELF_EXEC_PAGESIZE-1))
-
-#define ALPHA_ELF_PAGESTART(_v) ((_v) & ~(unsigned long)(ALPHA_PAGE_SIZE-1))
-#define ALPHA_ELF_PAGEOFFSET(_v) ((_v) & (ALPHA_PAGE_SIZE-1))
+#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))
#define INTERPRETER_NONE 0
#define INTERPRETER_AOUT 1
#define DLINFO_ITEMS 12
-#define put_user(x,ptr) (void)(*(ptr) = (typeof(*ptr))(x))
-#define get_user(ptr) (typeof(*ptr))(*(ptr))
-
static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
{
memcpy(to, from, n);
}
-static inline void memcpy_tofs(void * to, const void * from, unsigned long n)
-{
- memcpy(to, from, n);
-}
-
-//extern void * mmap4k();
-#define mmap4k(a, b, c, d, e, f) mmap((void *)(a), b, c, d, e, f)
-
extern unsigned long x86_stack_size;
static int load_aout_interp(void * exptr, int interp_fd);
#ifdef BSWAP_NEEDED
-static void bswap_ehdr(Elf32_Ehdr *ehdr)
+static void bswap_ehdr(struct elfhdr *ehdr)
{
bswap16s(&ehdr->e_type); /* Object file type */
bswap16s(&ehdr->e_machine); /* Architecture */
bswap32s(&ehdr->e_version); /* Object file version */
- bswap32s(&ehdr->e_entry); /* Entry point virtual address */
- bswap32s(&ehdr->e_phoff); /* Program header table file offset */
- bswap32s(&ehdr->e_shoff); /* Section header table file offset */
+ bswaptls(&ehdr->e_entry); /* Entry point virtual address */
+ bswaptls(&ehdr->e_phoff); /* Program header table file offset */
+ bswaptls(&ehdr->e_shoff); /* Section header table file offset */
bswap32s(&ehdr->e_flags); /* Processor-specific flags */
bswap16s(&ehdr->e_ehsize); /* ELF header size in bytes */
bswap16s(&ehdr->e_phentsize); /* Program header table entry size */
bswap16s(&ehdr->e_shstrndx); /* Section header string table index */
}
-static void bswap_phdr(Elf32_Phdr *phdr)
+static void bswap_phdr(struct elf_phdr *phdr)
{
bswap32s(&phdr->p_type); /* Segment type */
- bswap32s(&phdr->p_offset); /* Segment file offset */
- bswap32s(&phdr->p_vaddr); /* Segment virtual address */
- bswap32s(&phdr->p_paddr); /* Segment physical address */
- bswap32s(&phdr->p_filesz); /* Segment size in file */
- bswap32s(&phdr->p_memsz); /* Segment size in memory */
+ bswaptls(&phdr->p_offset); /* Segment file offset */
+ bswaptls(&phdr->p_vaddr); /* Segment virtual address */
+ bswaptls(&phdr->p_paddr); /* Segment physical address */
+ bswaptls(&phdr->p_filesz); /* Segment size in file */
+ bswaptls(&phdr->p_memsz); /* Segment size in memory */
bswap32s(&phdr->p_flags); /* Segment flags */
- bswap32s(&phdr->p_align); /* Segment alignment */
+ bswaptls(&phdr->p_align); /* Segment alignment */
}
-static void bswap_shdr(Elf32_Shdr *shdr)
+static void bswap_shdr(struct elf_shdr *shdr)
{
bswap32s(&shdr->sh_name);
bswap32s(&shdr->sh_type);
- bswap32s(&shdr->sh_flags);
- bswap32s(&shdr->sh_addr);
- bswap32s(&shdr->sh_offset);
- bswap32s(&shdr->sh_size);
+ bswaptls(&shdr->sh_flags);
+ bswaptls(&shdr->sh_addr);
+ bswaptls(&shdr->sh_offset);
+ bswaptls(&shdr->sh_size);
bswap32s(&shdr->sh_link);
bswap32s(&shdr->sh_info);
- bswap32s(&shdr->sh_addralign);
- bswap32s(&shdr->sh_entsize);
+ bswaptls(&shdr->sh_addralign);
+ bswaptls(&shdr->sh_entsize);
}
static void bswap_sym(Elf32_Sym *sym)
}
#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 = mmap4k(0, ALPHA_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)
-{
- (void)munmap(pageaddr, ALPHA_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 unsigned long copy_elf_strings(int argc,char ** argv, void **page,
+ unsigned long p)
{
char *tmp, *tmp1, *pag = NULL;
int len, offset = 0;
return 0; /* bullet-proofing */
}
while (argc-- > 0) {
- if (!(tmp1 = tmp = get_user(argv+argc))) {
+ tmp = argv[argc];
+ if (!tmp) {
fprintf(stderr, "VFS: argc is wrong");
exit(-1);
}
- while (get_user(tmp++));
+ tmp1 = tmp;
+ while (*tmp++);
len = tmp - tmp1;
if (p < len) { /* this shouldn't happen - 128kB */
return 0;
while (len) {
--p; --tmp; --len;
if (--offset < 0) {
- offset = p % X86_PAGE_SIZE;
- if (!(pag = (char *) page[p/X86_PAGE_SIZE]) &&
- !(pag = (char *) page[p/X86_PAGE_SIZE] =
- (unsigned long *) get_free_page())) {
- return 0;
+ offset = p % TARGET_PAGE_SIZE;
+ pag = (char *)page[p/TARGET_PAGE_SIZE];
+ if (!pag) {
+ pag = (char *)malloc(TARGET_PAGE_SIZE);
+ page[p/TARGET_PAGE_SIZE] = pag;
+ if (!pag)
+ return 0;
}
}
if (len == 0 || offset == 0) {
- *(pag + offset) = get_user(tmp);
+ *(pag + offset) = *tmp;
}
else {
int bytes_to_copy = (len > offset) ? offset : len;
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)
-{
- int i;
-
- for(i = 0; *vec; i++) {
- vec++;
- }
-
- return(i);
-}
-
-static int prepare_binprm(struct linux_binprm *bprm)
+unsigned long setup_arg_pages(target_ulong p, struct linux_binprm * bprm,
+ struct image_info * info)
{
- 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;
+ target_ulong stack_base, size, error;
int i;
/* Create enough stack to hold everything. If we don't use
* it for args, we'll use it for something else...
*/
size = x86_stack_size;
- if (size < MAX_ARG_PAGES*X86_PAGE_SIZE)
- size = MAX_ARG_PAGES*X86_PAGE_SIZE;
- error = (unsigned long)mmap4k(NULL,
- size + X86_PAGE_SIZE,
- PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
+ if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE)
+ size = MAX_ARG_PAGES*TARGET_PAGE_SIZE;
+ error = target_mmap(0,
+ size + qemu_host_page_size,
+ PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS,
+ -1, 0);
if (error == -1) {
perror("stk mmap");
exit(-1);
}
/* we reserve one extra page at the top of the stack as guard */
- mprotect((void *)(error + size), X86_PAGE_SIZE, PROT_NONE);
+ target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
- stack_base = error + size - MAX_ARG_PAGES*X86_PAGE_SIZE;
+ 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], X86_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 += X86_PAGE_SIZE;
+ stack_base += TARGET_PAGE_SIZE;
}
return p;
}
static void set_brk(unsigned long start, unsigned long end)
{
/* page-align the start and end addresses... */
- start = ALPHA_PAGE_ALIGN(start);
- end = ALPHA_PAGE_ALIGN(end);
+ start = HOST_PAGE_ALIGN(start);
+ end = HOST_PAGE_ALIGN(end);
if (end <= start)
return;
- if((long)mmap4k(start, end - start,
- PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0) == -1) {
+ if(target_mmap(start, end - start,
+ PROT_READ | PROT_WRITE | PROT_EXEC,
+ MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0) == -1) {
perror("cannot mmap brk");
exit(-1);
}
}
-/* 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)
+/* 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, unsigned long last_bss)
{
unsigned long nbyte;
- char * fpnt;
- nbyte = elf_bss & (ALPHA_PAGE_SIZE-1); /* was X86_PAGE_SIZE - JRP */
+ 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
+ of the file may not be mapped. A better fix would be to
+ 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) &
+ ~(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,
+ 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 = ALPHA_PAGE_SIZE - nbyte;
- fpnt = (char *) elf_bss;
+ nbyte = qemu_host_page_size - nbyte;
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)
-{
- target_ulong *argv, *envp, *dlinfo;
- target_ulong *sp;
-
- /*
- * Force 16 byte alignment here for generality.
- */
- sp = (unsigned int *) (~15UL & (unsigned long) p);
- sp -= exec ? DLINFO_ITEMS*2 : 2;
- dlinfo = sp;
- sp -= envc+1;
- envp = sp;
- sp -= argc+1;
- argv = sp;
- if (!ibcs) {
- put_user(tswapl((target_ulong)envp),--sp);
- put_user(tswapl((target_ulong)argv),--sp);
- }
-#define NEW_AUX_ENT(id, val) \
- put_user (tswapl(id), dlinfo++); \
- put_user (tswapl(val), dlinfo++)
-
- if (exec) { /* Put this here for an ELF program interpreter */
- 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)(ALPHA_PAGE_SIZE));
- NEW_AUX_ENT (AT_BASE, (target_ulong)(interp_load_addr));
- NEW_AUX_ENT (AT_FLAGS, (target_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());
+static unsigned long create_elf_tables(target_ulong 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)
+{
+ target_ulong sp;
+ int size;
+ target_ulong u_platform;
+ const char *k_platform;
+ const int n = sizeof(target_ulong);
+
+ sp = p;
+ u_platform = 0;
+ k_platform = ELF_PLATFORM;
+ if (k_platform) {
+ size_t len = strlen(k_platform) + 1;
+ sp -= (len + n - 1) & ~(n - 1);
+ u_platform = sp;
+ memcpy_to_target(sp, k_platform, len);
}
+ /*
+ * Force 16 byte _final_ alignment here for generality.
+ */
+ sp = sp &~ (target_ulong)15;
+ size = (DLINFO_ITEMS + 1) * 2;
+ if (k_platform)
+ size += 2;
+#ifdef DLINFO_ARCH_ITEMS
+ 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);
+
+#define NEW_AUX_ENT(id, val) do { \
+ sp -= n; tputl(sp, val); \
+ sp -= n; tputl(sp, id); \
+ } while(0)
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_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);
+ if (k_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).
+ */
+ ARCH_DLINFO;
+#endif
#undef NEW_AUX_ENT
- put_user(tswapl(argc),--sp);
- info->arg_start = (unsigned int)((unsigned long)p & 0xffffffff);
- while (argc-->0) {
- put_user(tswapl((target_ulong)p),argv++);
- while (get_user(p++)) /* nothing */ ;
- }
- put_user(0,argv);
- info->arg_end = info->env_start = (unsigned int)((unsigned long)p & 0xffffffff);
- while (envc-->0) {
- put_user(tswapl((target_ulong)p),envp++);
- while (get_user(p++)) /* nothing */ ;
- }
- 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)
/* Now read in all of the header information */
- if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > X86_PAGE_SIZE)
+ if (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > TARGET_PAGE_SIZE)
return ~0UL;
elf_phdata = (struct elf_phdr *)
if (interp_elf_ex->e_type == ET_DYN) {
/* in order to avoid harcoding the interpreter load
address in qemu, we allocate a big enough memory zone */
- error = (unsigned long)mmap4k(NULL, INTERP_MAP_SIZE,
- PROT_NONE, MAP_PRIVATE | MAP_ANON,
- -1, 0);
+ error = target_mmap(0, INTERP_MAP_SIZE,
+ PROT_NONE, MAP_PRIVATE | MAP_ANON,
+ -1, 0);
if (error == -1) {
perror("mmap");
exit(-1);
elf_type |= MAP_FIXED;
vaddr = eppnt->p_vaddr;
}
- error = (unsigned long)mmap4k(load_addr+X86_ELF_PAGESTART(vaddr),
- eppnt->p_filesz + X86_ELF_PAGEOFFSET(eppnt->p_vaddr),
+ error = target_mmap(load_addr+TARGET_ELF_PAGESTART(vaddr),
+ eppnt->p_filesz + TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr),
elf_prot,
elf_type,
interpreter_fd,
- eppnt->p_offset - X86_ELF_PAGEOFFSET(eppnt->p_vaddr));
+ eppnt->p_offset - TARGET_ELF_PAGEOFFSET(eppnt->p_vaddr));
- if (error > -1024UL) {
+ if (error == -1) {
/* Real error */
close(interpreter_fd);
free(elf_phdata);
* that there are zeromapped pages up to and including the last
* bss page.
*/
- padzero(elf_bss);
- elf_bss = X86_ELF_PAGESTART(elf_bss + ALPHA_PAGE_SIZE - 1); /* What we have mapped so far */
+ 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 */
if (last_bss > elf_bss) {
- mmap4k(elf_bss, last_bss-elf_bss,
- PROT_READ|PROT_WRITE|PROT_EXEC,
- MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ target_mmap(elf_bss, last_bss-elf_bss,
+ PROT_READ|PROT_WRITE|PROT_EXEC,
+ MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
}
free(elf_phdata);
unsigned int i;
struct elf_shdr sechdr, symtab, strtab;
char *strings;
+ struct syminfo *s;
lseek(fd, hdr->e_shoff, SEEK_SET);
for (i = 0; i < hdr->e_shnum; i++) {
found:
/* Now know where the strtab and symtab are. Snarf them. */
- disas_symtab = malloc(symtab.sh_size);
- disas_strtab = strings = malloc(strtab.sh_size);
- if (!disas_symtab || !disas_strtab)
+ s = malloc(sizeof(*s));
+ s->disas_symtab = malloc(symtab.sh_size);
+ 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, disas_symtab, symtab.sh_size) != symtab.sh_size)
+ if (read(fd, s->disas_symtab, symtab.sh_size) != symtab.sh_size)
return;
#ifdef BSWAP_NEEDED
for (i = 0; i < symtab.sh_size / sizeof(struct elf_sym); i++)
- bswap_sym(disas_symtab + sizeof(struct elf_sym)*i);
+ bswap_sym(s->disas_symtab + sizeof(struct elf_sym)*i);
#endif
lseek(fd, strtab.sh_offset, SEEK_SET);
if (read(fd, strings, strtab.sh_size) != strtab.sh_size)
return;
- disas_num_syms = symtab.sh_size / sizeof(struct elf_sym);
+ s->disas_num_syms = symtab.sh_size / sizeof(struct elf_sym);
+ s->next = syminfos;
+ 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;
unsigned int interpreter_type = INTERPRETER_NONE;
unsigned char ibcs2_interpreter;
int i;
- void * mapped_addr;
+ unsigned long mapped_addr;
struct elf_phdr * elf_ppnt;
struct elf_phdr *elf_phdata;
unsigned long elf_bss, k, elf_brk;
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;
}
- /* Now read in all of the header information */
+ 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) {
return -ENOMEM;
/* 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) {
- sprintf(passed_fileno, "%d", bprm->fd);
+ snprintf(passed_fileno, sizeof(passed_fileno), "%d", bprm->fd);
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++;
}
}
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 */
- error = (unsigned long)mmap4k(NULL, ET_DYN_MAP_SIZE,
- PROT_NONE, MAP_PRIVATE | MAP_ANON,
- -1, 0);
+ error = target_mmap(0, ET_DYN_MAP_SIZE,
+ PROT_NONE, MAP_PRIVATE | MAP_ANON,
+ -1, 0);
if (error == -1) {
perror("mmap");
exit(-1);
}
- load_bias = X86_ELF_PAGESTART(error - elf_ppnt->p_vaddr);
+ load_bias = TARGET_ELF_PAGESTART(error - elf_ppnt->p_vaddr);
}
- error = (unsigned long)mmap4k(
- X86_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr),
- (elf_ppnt->p_filesz +
- X86_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)),
- elf_prot,
- (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
- bprm->fd,
- (elf_ppnt->p_offset -
- X86_ELF_PAGEOFFSET(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 -
+ TARGET_ELF_PAGEOFFSET(elf_ppnt->p_vaddr)));
if (error == -1) {
perror("mmap");
exit(-1);
}
#ifdef LOW_ELF_STACK
- if (X86_ELF_PAGESTART(elf_ppnt->p_vaddr) < elf_stack)
- elf_stack = X86_ELF_PAGESTART(elf_ppnt->p_vaddr);
+ 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 = elf_ppnt->p_vaddr - elf_ppnt->p_offset;
if (elf_ex.e_type == ET_DYN) {
load_bias += error -
- X86_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr);
+ TARGET_ELF_PAGESTART(load_bias + elf_ppnt->p_vaddr);
load_addr += load_bias;
}
}
#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,
- (interpreter_type == INTERPRETER_ELF ? &elf_ex : NULL),
+ &elf_ex,
load_addr, load_bias,
interp_load_addr,
(interpreter_type == INTERPRETER_AOUT ? 0 : 1),
info);
- if (interpreter_type == INTERPRETER_AOUT)
- info->arg_start += strlen(passed_fileno) + 1;
info->start_brk = info->brk = elf_brk;
info->end_code = end_code;
info->start_code = start_code;
+ info->start_data = end_code;
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);
and some applications "depend" upon this behavior.
Since we do not have the power to recompile these, we
emulate the SVr4 behavior. Sigh. */
- mapped_addr = mmap4k(NULL, ALPHA_PAGE_SIZE, PROT_READ | PROT_EXEC,
- MAP_FIXED | MAP_PRIVATE, -1, 0);
+ mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
+ 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 = X86_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 == -1) {
- perror(filename);
- exit(-1);
- /* return retval; */
- }
- else {
- 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 */
- regs->esp = infop->start_stack;
- regs->eip = infop->entry;
- 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 / blobdiff