/* This is the Linux kernel elf-loading code, ported into user space */
+#include <sys/time.h>
+#include <sys/param.h>
#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 <sys/resource.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
#include "qemu.h"
#include "disas.h"
+#ifdef _ARCH_PPC64
+#undef ARCH_DLINFO
+#undef ELF_PLATFORM
+#undef ELF_HWCAP
+#undef ELF_CLASS
+#undef ELF_DATA
+#undef ELF_ARCH
+#endif
+
+#define ELF_OSABI ELFOSABI_SYSV
+
+/* 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
+#endif
+
+/* should probably go in elf.h */
+#ifndef ELIBBAD
+#define ELIBBAD 80
+#endif
+
#ifdef TARGET_I386
+#define ELF_PLATFORM get_elf_platform()
+
+static const char *get_elf_platform(void)
+{
+ static char elf_platform[] = "i386";
+ int family = (thread_env->cpuid_version >> 8) & 0xff;
+ if (family > 6)
+ family = 6;
+ if (family >= 3)
+ elf_platform[1] = '0' + family;
+ return elf_platform;
+}
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+ return thread_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;
+}
+
+typedef target_ulong target_elf_greg_t;
+typedef uint32_t target_uid_t;
+typedef uint32_t target_gid_t;
+typedef int32_t target_pid_t;
+
+#define ELF_NREG 27
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+
+/*
+ * Note that ELF_NREG should be 29 as there should be place for
+ * TRAPNO and ERR "registers" as well but linux doesn't dump
+ * those.
+ *
+ * See linux kernel: arch/x86/include/asm/elf.h
+ */
+static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
+{
+ (*regs)[0] = env->regs[15];
+ (*regs)[1] = env->regs[14];
+ (*regs)[2] = env->regs[13];
+ (*regs)[3] = env->regs[12];
+ (*regs)[4] = env->regs[R_EBP];
+ (*regs)[5] = env->regs[R_EBX];
+ (*regs)[6] = env->regs[11];
+ (*regs)[7] = env->regs[10];
+ (*regs)[8] = env->regs[9];
+ (*regs)[9] = env->regs[8];
+ (*regs)[10] = env->regs[R_EAX];
+ (*regs)[11] = env->regs[R_ECX];
+ (*regs)[12] = env->regs[R_EDX];
+ (*regs)[13] = env->regs[R_ESI];
+ (*regs)[14] = env->regs[R_EDI];
+ (*regs)[15] = env->regs[R_EAX]; /* XXX */
+ (*regs)[16] = env->eip;
+ (*regs)[17] = env->segs[R_CS].selector & 0xffff;
+ (*regs)[18] = env->eflags;
+ (*regs)[19] = env->regs[R_ESP];
+ (*regs)[20] = env->segs[R_SS].selector & 0xffff;
+ (*regs)[21] = env->segs[R_FS].selector & 0xffff;
+ (*regs)[22] = env->segs[R_GS].selector & 0xffff;
+ (*regs)[23] = env->segs[R_DS].selector & 0xffff;
+ (*regs)[24] = env->segs[R_ES].selector & 0xffff;
+ (*regs)[25] = env->segs[R_FS].selector & 0xffff;
+ (*regs)[26] = env->segs[R_GS].selector & 0xffff;
+}
+
+#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;
+}
+
+typedef target_ulong target_elf_greg_t;
+typedef uint16_t target_uid_t;
+typedef uint16_t target_gid_t;
+typedef int32_t target_pid_t;
+
+#define ELF_NREG 17
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+
+/*
+ * Note that ELF_NREG should be 19 as there should be place for
+ * TRAPNO and ERR "registers" as well but linux doesn't dump
+ * those.
+ *
+ * See linux kernel: arch/x86/include/asm/elf.h
+ */
+static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
+{
+ (*regs)[0] = env->regs[R_EBX];
+ (*regs)[1] = env->regs[R_ECX];
+ (*regs)[2] = env->regs[R_EDX];
+ (*regs)[3] = env->regs[R_ESI];
+ (*regs)[4] = env->regs[R_EDI];
+ (*regs)[5] = env->regs[R_EBP];
+ (*regs)[6] = env->regs[R_EAX];
+ (*regs)[7] = env->segs[R_DS].selector & 0xffff;
+ (*regs)[8] = env->segs[R_ES].selector & 0xffff;
+ (*regs)[9] = env->segs[R_FS].selector & 0xffff;
+ (*regs)[10] = env->segs[R_GS].selector & 0xffff;
+ (*regs)[11] = env->regs[R_EAX]; /* XXX */
+ (*regs)[12] = env->eip;
+ (*regs)[13] = env->segs[R_CS].selector & 0xffff;
+ (*regs)[14] = env->eflags;
+ (*regs)[15] = env->regs[R_ESP];
+ (*regs)[16] = env->segs[R_SS].selector & 0xffff;
}
+#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;
- regs->ARM_pc = infop->entry;
+ 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 */
+ /* FIXME - what to for failure of get_user()? */
+ get_user_ual(regs->ARM_r2, stack + 8); /* envp */
+ get_user_ual(regs->ARM_r1, 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;
+}
+
+typedef uint32_t target_elf_greg_t;
+typedef uint16_t target_uid_t;
+typedef uint16_t target_gid_t;
+typedef int32_t target_pid_t;
+
+#define ELF_NREG 18
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+
+static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUState *env)
+{
+ (*regs)[0] = env->regs[0];
+ (*regs)[1] = env->regs[1];
+ (*regs)[2] = env->regs[2];
+ (*regs)[3] = env->regs[3];
+ (*regs)[4] = env->regs[4];
+ (*regs)[5] = env->regs[5];
+ (*regs)[6] = env->regs[6];
+ (*regs)[7] = env->regs[7];
+ (*regs)[8] = env->regs[8];
+ (*regs)[9] = env->regs[9];
+ (*regs)[10] = env->regs[10];
+ (*regs)[11] = env->regs[11];
+ (*regs)[12] = env->regs[12];
+ (*regs)[13] = env->regs[13];
+ (*regs)[14] = env->regs[14];
+ (*regs)[15] = env->regs[15];
+
+ (*regs)[16] = cpsr_read((CPUState *)env);
+ (*regs)[17] = env->regs[0]; /* XXX */
}
#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
+#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_SPARCV9
+
+#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_START_MMAP 0x80000000
+
#define elf_check_arch(x) ( (x) == EM_SPARC )
#define ELF_CLASS ELFCLASS32
#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;
}
#endif
+#endif
#ifdef TARGET_PPC
#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 { \
- unsigned long *pos = (unsigned long *)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)
+/* Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP).
+ See arch/powerpc/include/asm/cputable.h. */
+enum {
+ QEMU_PPC_FEATURE_32 = 0x80000000,
+ QEMU_PPC_FEATURE_64 = 0x40000000,
+ QEMU_PPC_FEATURE_601_INSTR = 0x20000000,
+ QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000,
+ QEMU_PPC_FEATURE_HAS_FPU = 0x08000000,
+ QEMU_PPC_FEATURE_HAS_MMU = 0x04000000,
+ QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000,
+ QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000,
+ QEMU_PPC_FEATURE_HAS_SPE = 0x00800000,
+ QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000,
+ QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000,
+ QEMU_PPC_FEATURE_NO_TB = 0x00100000,
+ QEMU_PPC_FEATURE_POWER4 = 0x00080000,
+ QEMU_PPC_FEATURE_POWER5 = 0x00040000,
+ QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000,
+ QEMU_PPC_FEATURE_CELL = 0x00010000,
+ QEMU_PPC_FEATURE_BOOKE = 0x00008000,
+ QEMU_PPC_FEATURE_SMT = 0x00004000,
+ QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000,
+ QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000,
+ QEMU_PPC_FEATURE_PA6T = 0x00000800,
+ QEMU_PPC_FEATURE_HAS_DFP = 0x00000400,
+ QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200,
+ QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100,
+ QEMU_PPC_FEATURE_HAS_VSX = 0x00000080,
+ QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040,
+
+ QEMU_PPC_FEATURE_TRUE_LE = 0x00000002,
+ QEMU_PPC_FEATURE_PPC_LE = 0x00000001,
+};
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+ CPUState *e = thread_env;
+ uint32_t features = 0;
+
+ /* We don't have to be terribly complete here; the high points are
+ Altivec/FP/SPE support. Anything else is just a bonus. */
+#define GET_FEATURE(flag, feature) \
+ do {if (e->insns_flags & flag) features |= feature; } while(0)
+ GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
+ GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
+ GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
+ GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE);
+ GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE);
+ GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE);
+ GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE);
+ GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC);
+#undef GET_FEATURE
+
+ return features;
+}
/*
* We need to put in some extra aux table entries to tell glibc what
* - for compatibility with glibc ARCH_DLINFO must always be defined on PPC,
* even if DLINFO_ARCH_ITEMS goes to zero or is undefined.
*/
-#define DLINFO_ARCH_ITEMS 3
+#define DLINFO_ARCH_ITEMS 5
#define ARCH_DLINFO \
do { \
- sp -= DLINFO_ARCH_ITEMS * 2; \
- NEW_AUX_ENT(0, AT_DCACHEBSIZE, 0x20); \
- NEW_AUX_ENT(1, AT_ICACHEBSIZE, 0x20); \
- NEW_AUX_ENT(2, AT_UCACHEBSIZE, 0); \
+ NEW_AUX_ENT(AT_DCACHEBSIZE, 0x20); \
+ NEW_AUX_ENT(AT_ICACHEBSIZE, 0x20); \
+ NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \
/* \
* Now handle glibc compatibility. \
*/ \
- sp -= 2*2; \
- NEW_AUX_ENT(0, AT_IGNOREPPC, AT_IGNOREPPC); \
- NEW_AUX_ENT(1, AT_IGNOREPPC, AT_IGNOREPPC); \
+ 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)
{
- _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.
+ */
+ /* FIXME - what to for failure of get_user()? */
+ get_user_ual(_regs->gpr[3], 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_EXEC_PAGESIZE 4096
#endif
-#include "elf.h"
+#ifdef TARGET_MIPS
-/*
- * 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
+#define ELF_START_MMAP 0x80000000
-/*
- * 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 */
-};
+#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
+#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 = 2 << CP0St_KSU;
+ regs->cp0_epc = infop->entry;
+ regs->regs[29] = infop->start_stack;
+}
+
+#define ELF_EXEC_PAGESIZE 4096
+
+#endif /* TARGET_MIPS */
+
+#ifdef TARGET_MICROBLAZE
+
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ( (x) == EM_XILINX_MICROBLAZE )
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2MSB
+#define ELF_ARCH EM_MIPS
+
+static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ regs->pc = infop->entry;
+ regs->r1 = infop->start_stack;
+
+}
+
+#define ELF_EXEC_PAGESIZE 4096
+
+#endif /* TARGET_MICROBLAZE */
+
+#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 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 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 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 ELF_EXEC_PAGESIZE 8192
+
+#endif /* TARGET_ALPHA */
+
+#ifndef ELF_PLATFORM
+#define ELF_PLATFORM (NULL)
+#endif
+
+#ifndef ELF_HWCAP
+#define ELF_HWCAP 0
+#endif
+
+#ifdef TARGET_ABI32
+#undef ELF_CLASS
+#define ELF_CLASS ELFCLASS32
+#undef bswaptls
+#define bswaptls(ptr) bswap32s(ptr)
+#endif
+
+#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))
#define INTERPRETER_AOUT 1
#define INTERPRETER_ELF 2
-#define DLINFO_ITEMS 11
+#define DLINFO_ITEMS 12
static inline void memcpy_fromfs(void * to, const void * from, unsigned long n)
{
memcpy(to, from, n);
}
-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)
+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, 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);
- }
-}
+#ifdef USE_ELF_CORE_DUMP
+static int elf_core_dump(int, const CPUState *);
-static void free_page(void * pageaddr)
+#ifdef BSWAP_NEEDED
+static void bswap_note(struct elf_note *en)
{
- target_munmap((unsigned long)pageaddr, host_page_size);
+ bswap32s(&en->n_namesz);
+ bswap32s(&en->n_descsz);
+ bswap32s(&en->n_type);
}
+#endif /* BSWAP_NEEDED */
+
+#endif /* USE_ELF_CORE_DUMP */
/*
- * '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)
-{
- int i;
-
- for(i = 0; *vec; i++) {
- vec++;
- }
-
- return(i);
-}
-
-static int prepare_binprm(struct linux_binprm *bprm)
+static abi_ulong setup_arg_pages(abi_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;
+ 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,
- size + host_page_size,
+ error = target_mmap(0,
+ size + qemu_host_page_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS,
-1, 0);
exit(-1);
}
/* we reserve one extra page at the top of the stack as guard */
- target_mprotect(error + size, host_page_size, PROT_NONE);
+ target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
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]);
+ /* FIXME - check return value of memcpy_to_target() for failure */
+ 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
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 (real_host_page_size < host_page_size) {
- unsigned long end_addr, end_addr1;
- end_addr1 = (elf_bss + real_host_page_size - 1) &
- ~(real_host_page_size - 1);
+ if (qemu_real_host_page_size < qemu_host_page_size) {
+ 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 & (host_page_size-1);
+ nbyte = elf_bss & (qemu_host_page_size-1);
if (nbyte) {
- nbyte = host_page_size - nbyte;
- fpnt = (char *) elf_bss;
+ nbyte = qemu_host_page_size - nbyte;
do {
- *fpnt++ = 0;
+ /* FIXME - what to do if put_user() fails? */
+ put_user_u8(0, elf_bss);
+ 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;
- target_ulong *sp, *csp;
- int v;
+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)
+{
+ abi_ulong sp;
+ int size;
+ abi_ulong u_platform;
+ const char *k_platform;
+ const int n = sizeof(elf_addr_t);
+
+ 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;
+ /* FIXME - check return value of memcpy_to_target() for failure */
+ memcpy_to_target(sp, k_platform, len);
+ }
/*
* Force 16 byte _final_ alignment here for generality.
*/
- sp = (unsigned int *) (~15UL & (unsigned long) p);
- csp = sp;
- csp -= (DLINFO_ITEMS + 1) * 2;
+ sp = sp &~ (abi_ulong)15;
+ size = (DLINFO_ITEMS + 1) * 2;
+ if (k_platform)
+ size += 2;
#ifdef DLINFO_ARCH_ITEMS
- csp -= DLINFO_ARCH_ITEMS*2;
+ size += DLINFO_ARCH_ITEMS * 2;
#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(nr, id, val) \
- put_user (id, sp + (nr * 2)); \
- put_user (val, sp + (nr * 2 + 1))
- sp -= 2;
- NEW_AUX_ENT (0, AT_NULL, 0);
-
- sp -= DLINFO_ITEMS*2;
- NEW_AUX_ENT( 0, AT_PHDR, (target_ulong)(load_addr + exec->e_phoff));
- NEW_AUX_ENT( 1, AT_PHENT, (target_ulong)(sizeof (struct elf_phdr)));
- NEW_AUX_ENT( 2, AT_PHNUM, (target_ulong)(exec->e_phnum));
- NEW_AUX_ENT( 3, AT_PAGESZ, (target_ulong)(TARGET_PAGE_SIZE));
- NEW_AUX_ENT( 4, AT_BASE, (target_ulong)(interp_load_addr));
- NEW_AUX_ENT( 5, AT_FLAGS, (target_ulong)0);
- NEW_AUX_ENT( 6, AT_ENTRY, load_bias + exec->e_entry);
- NEW_AUX_ENT( 7, AT_UID, (target_ulong) getuid());
- NEW_AUX_ENT( 8, AT_EUID, (target_ulong) geteuid());
- NEW_AUX_ENT( 9, AT_GID, (target_ulong) getgid());
- NEW_AUX_ENT(11, AT_EGID, (target_ulong) getegid());
+ 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
+ */
+#define NEW_AUX_ENT(id, val) do { \
+ sp -= n; put_user_ual(val, sp); \
+ sp -= n; put_user_ual(id, sp); \
+ } while(0)
+
+ NEW_AUX_ENT (AT_NULL, 0);
+
+ /* There must be exactly DLINFO_ITEMS entries here. */
+ 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, (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);
+ NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
+ 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).
*/
#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);
+ info->saved_auxv = sp;
+
+ 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);
- elf_bss = TARGET_ELF_PAGESTART(elf_bss + host_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) {
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;
+}
+
+static int symfind(const void *s0, const void *s1)
+{
+ struct elf_sym *key = (struct elf_sym *)s0;
+ struct elf_sym *sym = (struct elf_sym *)s1;
+ int result = 0;
+ if (key->st_value < sym->st_value) {
+ result = -1;
+ } else if (key->st_value >= sym->st_value + sym->st_size) {
+ result = 1;
+ }
+ return result;
+}
+
+static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
+{
+#if ELF_CLASS == ELFCLASS32
+ struct elf_sym *syms = s->disas_symtab.elf32;
+#else
+ struct elf_sym *syms = s->disas_symtab.elf64;
+#endif
+
+ // binary search
+ struct elf_sym key;
+ struct elf_sym *sym;
+
+ key.st_value = orig_addr;
+
+ sym = bsearch(&key, syms, s->disas_num_syms, sizeof(*syms), symfind);
+ if (sym != NULL) {
+ return s->disas_strtab + sym->st_name;
+ }
+
+ return "";
+}
+
+/* FIXME: This should use elf_ops.h */
+static int symcmp(const void *s0, const void *s1)
+{
+ struct elf_sym *sym0 = (struct elf_sym *)s0;
+ struct elf_sym *sym1 = (struct elf_sym *)s1;
+ return (sym0->st_value < sym1->st_value)
+ ? -1
+ : ((sym0->st_value > sym1->st_value) ? 1 : 0);
}
/* Best attempt to load symbols from this ELF object. */
static void load_symbols(struct elfhdr *hdr, int fd)
{
- unsigned int i;
+ unsigned int i, nsyms;
struct elf_shdr sechdr, symtab, strtab;
char *strings;
+ struct syminfo *s;
+ struct elf_sym *syms;
lseek(fd, hdr->e_shoff, SEEK_SET);
for (i = 0; i < hdr->e_shnum; i++) {
- if (read(fd, &sechdr, sizeof(sechdr)) != sizeof(sechdr))
- return;
+ if (read(fd, &sechdr, sizeof(sechdr)) != sizeof(sechdr))
+ return;
#ifdef BSWAP_NEEDED
- bswap_shdr(&sechdr);
+ bswap_shdr(&sechdr);
#endif
- if (sechdr.sh_type == SHT_SYMTAB) {
- symtab = sechdr;
- lseek(fd, hdr->e_shoff
- + sizeof(sechdr) * sechdr.sh_link, SEEK_SET);
- if (read(fd, &strtab, sizeof(strtab))
- != sizeof(strtab))
- return;
+ if (sechdr.sh_type == SHT_SYMTAB) {
+ symtab = sechdr;
+ lseek(fd, hdr->e_shoff
+ + sizeof(sechdr) * sechdr.sh_link, SEEK_SET);
+ if (read(fd, &strtab, sizeof(strtab))
+ != sizeof(strtab))
+ return;
#ifdef BSWAP_NEEDED
- bswap_shdr(&strtab);
+ bswap_shdr(&strtab);
#endif
- goto found;
- }
+ goto found;
+ }
}
return; /* Shouldn't happen... */
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)
- return;
-
+ s = malloc(sizeof(*s));
+ syms = malloc(symtab.sh_size);
+ if (!syms)
+ return;
+ s->disas_strtab = strings = malloc(strtab.sh_size);
+ if (!s->disas_strtab)
+ return;
+
lseek(fd, symtab.sh_offset, SEEK_SET);
- if (read(fd, disas_symtab, symtab.sh_size) != symtab.sh_size)
- return;
+ if (read(fd, syms, symtab.sh_size) != symtab.sh_size)
+ return;
+
+ nsyms = symtab.sh_size / sizeof(struct elf_sym);
+ i = 0;
+ while (i < nsyms) {
#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(syms + i);
#endif
+ // Throw away entries which we do not need.
+ if (syms[i].st_shndx == SHN_UNDEF ||
+ syms[i].st_shndx >= SHN_LORESERVE ||
+ ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {
+ nsyms--;
+ if (i < nsyms) {
+ syms[i] = syms[nsyms];
+ }
+ continue;
+ }
+#if defined(TARGET_ARM) || defined (TARGET_MIPS)
+ /* The bottom address bit marks a Thumb or MIPS16 symbol. */
+ syms[i].st_value &= ~(target_ulong)1;
+#endif
+ i++;
+ }
+ syms = realloc(syms, nsyms * sizeof(*syms));
+
+ qsort(syms, nsyms, sizeof(*syms), symcmp);
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);
+ return;
+ s->disas_num_syms = nsyms;
+#if ELF_CLASS == ELFCLASS32
+ s->disas_symtab.elf32 = syms;
+ s->lookup_symbol = lookup_symbolxx;
+#else
+ s->disas_symtab.elf64 = syms;
+ s->lookup_symbol = lookup_symbolxx;
+#endif
+ 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;
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;
+ interp_ex.a_info = 0;
for(i=0;i < elf_ex.e_phnum; i++) {
if (elf_ppnt->p_type == PT_INTERP) {
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
}
if (interp_elf_ex.e_ident[0] != 0x7f ||
- strncmp(&interp_elf_ex.e_ident[1], "ELF",3) != 0) {
+ strncmp((char *)&interp_elf_ex.e_ident[1], "ELF",3) != 0) {
interpreter_type &= ~INTERPRETER_ELF;
}
/* 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++;
}
}
/* 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;
+
+#if defined(CONFIG_USE_GUEST_BASE)
+ /*
+ * In case where user has not explicitly set the guest_base, we
+ * probe here that should we set it automatically.
+ */
+ if (!have_guest_base) {
+ /*
+ * Go through ELF program header table and find out whether
+ * any of the segments drop below our current mmap_min_addr and
+ * in that case set guest_base to corresponding address.
+ */
+ for (i = 0, elf_ppnt = elf_phdata; i < elf_ex.e_phnum;
+ i++, elf_ppnt++) {
+ if (elf_ppnt->p_type != PT_LOAD)
+ continue;
+ if (HOST_PAGE_ALIGN(elf_ppnt->p_vaddr) < mmap_min_addr) {
+ guest_base = HOST_PAGE_ALIGN(mmap_min_addr);
+ break;
+ }
+ }
+ }
+#endif /* CONFIG_USE_GUEST_BASE */
/* 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);
free(elf_phdata);
- if (loglevel)
+ if (qemu_log_enabled())
load_symbols(&elf_ex, bprm->fd);
if (interpreter_type != INTERPRETER_AOUT) close(bprm->fd);
#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);
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 = target_mmap(0, host_page_size, PROT_READ | PROT_EXEC,
+ mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
MAP_FIXED | MAP_PRIVATE, -1, 0);
}
-#ifdef ELF_PLAT_INIT
+ info->entry = elf_entry;
+
+#ifdef USE_ELF_CORE_DUMP
+ bprm->core_dump = &elf_core_dump;
+#endif
+
+ return 0;
+}
+
+#ifdef USE_ELF_CORE_DUMP
+
+/*
+ * Definitions to generate Intel SVR4-like core files.
+ * These mostly have the same names as the SVR4 types with "target_elf_"
+ * tacked on the front to prevent clashes with linux definitions,
+ * and the typedef forms have been avoided. This is mostly like
+ * the SVR4 structure, but more Linuxy, with things that Linux does
+ * not support and which gdb doesn't really use excluded.
+ *
+ * Fields we don't dump (their contents is zero) in linux-user qemu
+ * are marked with XXX.
+ *
+ * Core dump code is copied from linux kernel (fs/binfmt_elf.c).
+ *
+ * Porting ELF coredump for target is (quite) simple process. First you
+ * define ELF_USE_CORE_DUMP in target ELF code (where init_thread() for
+ * the target resides):
+ *
+ * #define USE_ELF_CORE_DUMP
+ *
+ * Next you define type of register set used for dumping. ELF specification
+ * says that it needs to be array of elf_greg_t that has size of ELF_NREG.
+ *
+ * typedef <target_regtype> target_elf_greg_t;
+ * #define ELF_NREG <number of registers>
+ * typedef taret_elf_greg_t target_elf_gregset_t[ELF_NREG];
+ *
+ * Then define following types to match target types. Actual types can
+ * be found from linux kernel (arch/<ARCH>/include/asm/posix_types.h):
+ *
+ * typedef <target_uid_type> target_uid_t;
+ * typedef <target_gid_type> target_gid_t;
+ * typedef <target_pid_type> target_pid_t;
+ *
+ * Last step is to implement target specific function that copies registers
+ * from given cpu into just specified register set. Prototype is:
+ *
+ * static void elf_core_copy_regs(taret_elf_gregset_t *regs,
+ * const CPUState *env);
+ *
+ * Parameters:
+ * regs - copy register values into here (allocated and zeroed by caller)
+ * env - copy registers from here
+ *
+ * Example for ARM target is provided in this file.
+ */
+
+/* An ELF note in memory */
+struct memelfnote {
+ const char *name;
+ size_t namesz;
+ size_t namesz_rounded;
+ int type;
+ size_t datasz;
+ void *data;
+ size_t notesz;
+};
+
+struct target_elf_siginfo {
+ int si_signo; /* signal number */
+ int si_code; /* extra code */
+ int si_errno; /* errno */
+};
+
+struct target_elf_prstatus {
+ struct target_elf_siginfo pr_info; /* Info associated with signal */
+ short pr_cursig; /* Current signal */
+ target_ulong pr_sigpend; /* XXX */
+ target_ulong pr_sighold; /* XXX */
+ target_pid_t pr_pid;
+ target_pid_t pr_ppid;
+ target_pid_t pr_pgrp;
+ target_pid_t pr_sid;
+ struct target_timeval pr_utime; /* XXX User time */
+ struct target_timeval pr_stime; /* XXX System time */
+ struct target_timeval pr_cutime; /* XXX Cumulative user time */
+ struct target_timeval pr_cstime; /* XXX Cumulative system time */
+ target_elf_gregset_t pr_reg; /* GP registers */
+ int pr_fpvalid; /* XXX */
+};
+
+#define ELF_PRARGSZ (80) /* Number of chars for args */
+
+struct target_elf_prpsinfo {
+ char pr_state; /* numeric process state */
+ char pr_sname; /* char for pr_state */
+ char pr_zomb; /* zombie */
+ char pr_nice; /* nice val */
+ target_ulong pr_flag; /* flags */
+ target_uid_t pr_uid;
+ target_gid_t pr_gid;
+ target_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /* Lots missing */
+ char pr_fname[16]; /* filename of executable */
+ char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
+};
+
+/* Here is the structure in which status of each thread is captured. */
+struct elf_thread_status {
+ TAILQ_ENTRY(elf_thread_status) ets_link;
+ struct target_elf_prstatus prstatus; /* NT_PRSTATUS */
+#if 0
+ elf_fpregset_t fpu; /* NT_PRFPREG */
+ struct task_struct *thread;
+ elf_fpxregset_t xfpu; /* ELF_CORE_XFPREG_TYPE */
+#endif
+ struct memelfnote notes[1];
+ int num_notes;
+};
+
+struct elf_note_info {
+ struct memelfnote *notes;
+ struct target_elf_prstatus *prstatus; /* NT_PRSTATUS */
+ struct target_elf_prpsinfo *psinfo; /* NT_PRPSINFO */
+
+ TAILQ_HEAD(thread_list_head, elf_thread_status) thread_list;
+#if 0
/*
- * 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.
+ * Current version of ELF coredump doesn't support
+ * dumping fp regs etc.
*/
- ELF_PLAT_INIT(regs);
+ elf_fpregset_t *fpu;
+ elf_fpxregset_t *xfpu;
+ int thread_status_size;
#endif
+ int notes_size;
+ int numnote;
+};
+
+struct vm_area_struct {
+ abi_ulong vma_start; /* start vaddr of memory region */
+ abi_ulong vma_end; /* end vaddr of memory region */
+ abi_ulong vma_flags; /* protection etc. flags for the region */
+ TAILQ_ENTRY(vm_area_struct) vma_link;
+};
+struct mm_struct {
+ TAILQ_HEAD(, vm_area_struct) mm_mmap;
+ int mm_count; /* number of mappings */
+};
- info->entry = elf_entry;
+static struct mm_struct *vma_init(void);
+static void vma_delete(struct mm_struct *);
+static int vma_add_mapping(struct mm_struct *, abi_ulong,
+ abi_ulong, abi_ulong);
+static int vma_get_mapping_count(const struct mm_struct *);
+static struct vm_area_struct *vma_first(const struct mm_struct *);
+static struct vm_area_struct *vma_next(struct vm_area_struct *);
+static abi_ulong vma_dump_size(const struct vm_area_struct *);
+static int vma_walker(void *priv, unsigned long start, unsigned long end,
+ unsigned long flags);
+
+static void fill_elf_header(struct elfhdr *, int, uint16_t, uint32_t);
+static void fill_note(struct memelfnote *, const char *, int,
+ unsigned int, void *);
+static void fill_prstatus(struct target_elf_prstatus *, const TaskState *, int);
+static int fill_psinfo(struct target_elf_prpsinfo *, const TaskState *);
+static void fill_auxv_note(struct memelfnote *, const TaskState *);
+static void fill_elf_note_phdr(struct elf_phdr *, int, off_t);
+static size_t note_size(const struct memelfnote *);
+static void free_note_info(struct elf_note_info *);
+static int fill_note_info(struct elf_note_info *, long, const CPUState *);
+static void fill_thread_info(struct elf_note_info *, const CPUState *);
+static int core_dump_filename(const TaskState *, char *, size_t);
+
+static int dump_write(int, const void *, size_t);
+static int write_note(struct memelfnote *, int);
+static int write_note_info(struct elf_note_info *, int);
- return 0;
+#ifdef BSWAP_NEEDED
+static void bswap_prstatus(struct target_elf_prstatus *);
+static void bswap_psinfo(struct target_elf_prpsinfo *);
+
+static void bswap_prstatus(struct target_elf_prstatus *prstatus)
+{
+ prstatus->pr_info.si_signo = tswapl(prstatus->pr_info.si_signo);
+ prstatus->pr_info.si_code = tswapl(prstatus->pr_info.si_code);
+ prstatus->pr_info.si_errno = tswapl(prstatus->pr_info.si_errno);
+ prstatus->pr_cursig = tswap16(prstatus->pr_cursig);
+ prstatus->pr_sigpend = tswapl(prstatus->pr_sigpend);
+ prstatus->pr_sighold = tswapl(prstatus->pr_sighold);
+ prstatus->pr_pid = tswap32(prstatus->pr_pid);
+ prstatus->pr_ppid = tswap32(prstatus->pr_ppid);
+ prstatus->pr_pgrp = tswap32(prstatus->pr_pgrp);
+ prstatus->pr_sid = tswap32(prstatus->pr_sid);
+ /* cpu times are not filled, so we skip them */
+ /* regs should be in correct format already */
+ prstatus->pr_fpvalid = tswap32(prstatus->pr_fpvalid);
+}
+
+static void bswap_psinfo(struct target_elf_prpsinfo *psinfo)
+{
+ psinfo->pr_flag = tswapl(psinfo->pr_flag);
+ psinfo->pr_uid = tswap16(psinfo->pr_uid);
+ psinfo->pr_gid = tswap16(psinfo->pr_gid);
+ psinfo->pr_pid = tswap32(psinfo->pr_pid);
+ psinfo->pr_ppid = tswap32(psinfo->pr_ppid);
+ psinfo->pr_pgrp = tswap32(psinfo->pr_pgrp);
+ psinfo->pr_sid = tswap32(psinfo->pr_sid);
}
+#endif /* BSWAP_NEEDED */
+
+/*
+ * Minimal support for linux memory regions. These are needed
+ * when we are finding out what memory exactly belongs to
+ * emulated process. No locks needed here, as long as
+ * thread that received the signal is stopped.
+ */
+
+static struct mm_struct *vma_init(void)
+{
+ struct mm_struct *mm;
+ if ((mm = qemu_malloc(sizeof (*mm))) == NULL)
+ return (NULL);
+ mm->mm_count = 0;
+ TAILQ_INIT(&mm->mm_mmap);
-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;
- }
+ return (mm);
+}
+
+static void vma_delete(struct mm_struct *mm)
+{
+ struct vm_area_struct *vma;
+
+ while ((vma = vma_first(mm)) != NULL) {
+ TAILQ_REMOVE(&mm->mm_mmap, vma, vma_link);
+ qemu_free(vma);
+ }
+ qemu_free(mm);
+}
+
+static int vma_add_mapping(struct mm_struct *mm, abi_ulong start,
+ abi_ulong end, abi_ulong flags)
+{
+ struct vm_area_struct *vma;
+
+ if ((vma = qemu_mallocz(sizeof (*vma))) == NULL)
+ return (-1);
+
+ vma->vma_start = start;
+ vma->vma_end = end;
+ vma->vma_flags = flags;
+
+ TAILQ_INSERT_TAIL(&mm->mm_mmap, vma, vma_link);
+ mm->mm_count++;
+
+ return (0);
+}
+
+static struct vm_area_struct *vma_first(const struct mm_struct *mm)
+{
+ return (TAILQ_FIRST(&mm->mm_mmap));
+}
+
+static struct vm_area_struct *vma_next(struct vm_area_struct *vma)
+{
+ return (TAILQ_NEXT(vma, vma_link));
+}
+
+static int vma_get_mapping_count(const struct mm_struct *mm)
+{
+ return (mm->mm_count);
+}
+
+/*
+ * Calculate file (dump) size of given memory region.
+ */
+static abi_ulong vma_dump_size(const struct vm_area_struct *vma)
+{
+ /* if we cannot even read the first page, skip it */
+ if (!access_ok(VERIFY_READ, vma->vma_start, TARGET_PAGE_SIZE))
+ return (0);
+
+ /*
+ * Usually we don't dump executable pages as they contain
+ * non-writable code that debugger can read directly from
+ * target library etc. However, thread stacks are marked
+ * also executable so we read in first page of given region
+ * and check whether it contains elf header. If there is
+ * no elf header, we dump it.
+ */
+ if (vma->vma_flags & PROT_EXEC) {
+ char page[TARGET_PAGE_SIZE];
+
+ copy_from_user(page, vma->vma_start, sizeof (page));
+ if ((page[EI_MAG0] == ELFMAG0) &&
+ (page[EI_MAG1] == ELFMAG1) &&
+ (page[EI_MAG2] == ELFMAG2) &&
+ (page[EI_MAG3] == ELFMAG3)) {
+ /*
+ * Mappings are possibly from ELF binary. Don't dump
+ * them.
+ */
+ return (0);
}
+ }
- if(retval>=0) {
- retval = load_elf_binary(&bprm,regs,infop);
- }
- if(retval>=0) {
- /* success. Initialize important registers */
- init_thread(regs, infop);
- return retval;
- }
+ return (vma->vma_end - vma->vma_start);
+}
- /* 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 vma_walker(void *priv, unsigned long start, unsigned long end,
+ unsigned long flags)
+{
+ struct mm_struct *mm = (struct mm_struct *)priv;
+
+ /*
+ * Don't dump anything that qemu has reserved for internal use.
+ */
+ if (flags & PAGE_RESERVED)
+ return (0);
+
+ vma_add_mapping(mm, start, end, flags);
+ return (0);
+}
+
+static void fill_note(struct memelfnote *note, const char *name, int type,
+ unsigned int sz, void *data)
+{
+ unsigned int namesz;
+
+ namesz = strlen(name) + 1;
+ note->name = name;
+ note->namesz = namesz;
+ note->namesz_rounded = roundup(namesz, sizeof (int32_t));
+ note->type = type;
+ note->datasz = roundup(sz, sizeof (int32_t));;
+ note->data = data;
+
+ /*
+ * We calculate rounded up note size here as specified by
+ * ELF document.
+ */
+ note->notesz = sizeof (struct elf_note) +
+ note->namesz_rounded + note->datasz;
+}
+
+static void fill_elf_header(struct elfhdr *elf, int segs, uint16_t machine,
+ uint32_t flags)
+{
+ (void) memset(elf, 0, sizeof(*elf));
+
+ (void) memcpy(elf->e_ident, ELFMAG, SELFMAG);
+ elf->e_ident[EI_CLASS] = ELF_CLASS;
+ elf->e_ident[EI_DATA] = ELF_DATA;
+ elf->e_ident[EI_VERSION] = EV_CURRENT;
+ elf->e_ident[EI_OSABI] = ELF_OSABI;
+
+ elf->e_type = ET_CORE;
+ elf->e_machine = machine;
+ elf->e_version = EV_CURRENT;
+ elf->e_phoff = sizeof(struct elfhdr);
+ elf->e_flags = flags;
+ elf->e_ehsize = sizeof(struct elfhdr);
+ elf->e_phentsize = sizeof(struct elf_phdr);
+ elf->e_phnum = segs;
+
+#ifdef BSWAP_NEEDED
+ bswap_ehdr(elf);
+#endif
+}
+
+static void fill_elf_note_phdr(struct elf_phdr *phdr, int sz, off_t offset)
+{
+ phdr->p_type = PT_NOTE;
+ phdr->p_offset = offset;
+ phdr->p_vaddr = 0;
+ phdr->p_paddr = 0;
+ phdr->p_filesz = sz;
+ phdr->p_memsz = 0;
+ phdr->p_flags = 0;
+ phdr->p_align = 0;
+
+#ifdef BSWAP_NEEDED
+ bswap_phdr(phdr);
+#endif
+}
+
+static size_t note_size(const struct memelfnote *note)
+{
+ return (note->notesz);
+}
+
+static void fill_prstatus(struct target_elf_prstatus *prstatus,
+ const TaskState *ts, int signr)
+{
+ (void) memset(prstatus, 0, sizeof (*prstatus));
+ prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
+ prstatus->pr_pid = ts->ts_tid;
+ prstatus->pr_ppid = getppid();
+ prstatus->pr_pgrp = getpgrp();
+ prstatus->pr_sid = getsid(0);
+
+#ifdef BSWAP_NEEDED
+ bswap_prstatus(prstatus);
+#endif
+}
+
+static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
+{
+ char *filename, *base_filename;
+ unsigned int i, len;
+
+ (void) memset(psinfo, 0, sizeof (*psinfo));
+
+ len = ts->info->arg_end - ts->info->arg_start;
+ if (len >= ELF_PRARGSZ)
+ len = ELF_PRARGSZ - 1;
+ if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len))
+ return -EFAULT;
+ for (i = 0; i < len; i++)
+ if (psinfo->pr_psargs[i] == 0)
+ psinfo->pr_psargs[i] = ' ';
+ psinfo->pr_psargs[len] = 0;
+
+ psinfo->pr_pid = getpid();
+ psinfo->pr_ppid = getppid();
+ psinfo->pr_pgrp = getpgrp();
+ psinfo->pr_sid = getsid(0);
+ psinfo->pr_uid = getuid();
+ psinfo->pr_gid = getgid();
+
+ filename = strdup(ts->bprm->filename);
+ base_filename = strdup(basename(filename));
+ (void) strncpy(psinfo->pr_fname, base_filename,
+ sizeof(psinfo->pr_fname));
+ free(base_filename);
+ free(filename);
+
+#ifdef BSWAP_NEEDED
+ bswap_psinfo(psinfo);
+#endif
+ return (0);
+}
+
+static void fill_auxv_note(struct memelfnote *note, const TaskState *ts)
+{
+ elf_addr_t auxv = (elf_addr_t)ts->info->saved_auxv;
+ elf_addr_t orig_auxv = auxv;
+ abi_ulong val;
+ void *ptr;
+ int i, len;
+
+ /*
+ * Auxiliary vector is stored in target process stack. It contains
+ * {type, value} pairs that we need to dump into note. This is not
+ * strictly necessary but we do it here for sake of completeness.
+ */
+
+ /* find out lenght of the vector, AT_NULL is terminator */
+ i = len = 0;
+ do {
+ get_user_ual(val, auxv);
+ i += 2;
+ auxv += 2 * sizeof (elf_addr_t);
+ } while (val != AT_NULL);
+ len = i * sizeof (elf_addr_t);
+
+ /* read in whole auxv vector and copy it to memelfnote */
+ ptr = lock_user(VERIFY_READ, orig_auxv, len, 0);
+ if (ptr != NULL) {
+ fill_note(note, "CORE", NT_AUXV, len, ptr);
+ unlock_user(ptr, auxv, len);
+ }
+}
+
+/*
+ * Constructs name of coredump file. We have following convention
+ * for the name:
+ * qemu_<basename-of-target-binary>_<date>-<time>_<pid>.core
+ *
+ * Returns 0 in case of success, -1 otherwise (errno is set).
+ */
+static int core_dump_filename(const TaskState *ts, char *buf,
+ size_t bufsize)
+{
+ char timestamp[64];
+ char *filename = NULL;
+ char *base_filename = NULL;
+ struct timeval tv;
+ struct tm tm;
+
+ assert(bufsize >= PATH_MAX);
+
+ if (gettimeofday(&tv, NULL) < 0) {
+ (void) fprintf(stderr, "unable to get current timestamp: %s",
+ strerror(errno));
+ return (-1);
+ }
+
+ filename = strdup(ts->bprm->filename);
+ base_filename = strdup(basename(filename));
+ (void) strftime(timestamp, sizeof (timestamp), "%Y%m%d-%H%M%S",
+ localtime_r(&tv.tv_sec, &tm));
+ (void) snprintf(buf, bufsize, "qemu_%s_%s_%d.core",
+ base_filename, timestamp, (int)getpid());
+ free(base_filename);
+ free(filename);
+
+ return (0);
+}
+
+static int dump_write(int fd, const void *ptr, size_t size)
+{
+ const char *bufp = (const char *)ptr;
+ ssize_t bytes_written, bytes_left;
+ struct rlimit dumpsize;
+ off_t pos;
+
+ bytes_written = 0;
+ getrlimit(RLIMIT_CORE, &dumpsize);
+ if ((pos = lseek(fd, 0, SEEK_CUR))==-1) {
+ if (errno == ESPIPE) { /* not a seekable stream */
+ bytes_left = size;
+ } else {
+ return pos;
+ }
+ } else {
+ if (dumpsize.rlim_cur <= pos) {
+ return -1;
+ } else if (dumpsize.rlim_cur == RLIM_INFINITY) {
+ bytes_left = size;
+ } else {
+ size_t limit_left=dumpsize.rlim_cur - pos;
+ bytes_left = limit_left >= size ? size : limit_left ;
+ }
+ }
+
+ /*
+ * In normal conditions, single write(2) should do but
+ * in case of socket etc. this mechanism is more portable.
+ */
+ do {
+ bytes_written = write(fd, bufp, bytes_left);
+ if (bytes_written < 0) {
+ if (errno == EINTR)
+ continue;
+ return (-1);
+ } else if (bytes_written == 0) { /* eof */
+ return (-1);
+ }
+ bufp += bytes_written;
+ bytes_left -= bytes_written;
+ } while (bytes_left > 0);
+
+ return (0);
+}
+
+static int write_note(struct memelfnote *men, int fd)
+{
+ struct elf_note en;
+
+ en.n_namesz = men->namesz;
+ en.n_type = men->type;
+ en.n_descsz = men->datasz;
+
+#ifdef BSWAP_NEEDED
+ bswap_note(&en);
+#endif
+
+ if (dump_write(fd, &en, sizeof(en)) != 0)
+ return (-1);
+ if (dump_write(fd, men->name, men->namesz_rounded) != 0)
+ return (-1);
+ if (dump_write(fd, men->data, men->datasz) != 0)
+ return (-1);
+
+ return (0);
+}
+
+static void fill_thread_info(struct elf_note_info *info, const CPUState *env)
+{
+ TaskState *ts = (TaskState *)env->opaque;
+ struct elf_thread_status *ets;
+
+ ets = qemu_mallocz(sizeof (*ets));
+ ets->num_notes = 1; /* only prstatus is dumped */
+ fill_prstatus(&ets->prstatus, ts, 0);
+ elf_core_copy_regs(&ets->prstatus.pr_reg, env);
+ fill_note(&ets->notes[0], "CORE", NT_PRSTATUS, sizeof (ets->prstatus),
+ &ets->prstatus);
+
+ TAILQ_INSERT_TAIL(&info->thread_list, ets, ets_link);
+
+ info->notes_size += note_size(&ets->notes[0]);
+}
+
+static int fill_note_info(struct elf_note_info *info,
+ long signr, const CPUState *env)
+{
+#define NUMNOTES 3
+ CPUState *cpu = NULL;
+ TaskState *ts = (TaskState *)env->opaque;
+ int i;
+
+ (void) memset(info, 0, sizeof (*info));
+
+ TAILQ_INIT(&info->thread_list);
+
+ info->notes = qemu_mallocz(NUMNOTES * sizeof (struct memelfnote));
+ if (info->notes == NULL)
+ return (-ENOMEM);
+ info->prstatus = qemu_mallocz(sizeof (*info->prstatus));
+ if (info->prstatus == NULL)
+ return (-ENOMEM);
+ info->psinfo = qemu_mallocz(sizeof (*info->psinfo));
+ if (info->prstatus == NULL)
+ return (-ENOMEM);
+
+ /*
+ * First fill in status (and registers) of current thread
+ * including process info & aux vector.
+ */
+ fill_prstatus(info->prstatus, ts, signr);
+ elf_core_copy_regs(&info->prstatus->pr_reg, env);
+ fill_note(&info->notes[0], "CORE", NT_PRSTATUS,
+ sizeof (*info->prstatus), info->prstatus);
+ fill_psinfo(info->psinfo, ts);
+ fill_note(&info->notes[1], "CORE", NT_PRPSINFO,
+ sizeof (*info->psinfo), info->psinfo);
+ fill_auxv_note(&info->notes[2], ts);
+ info->numnote = 3;
+
+ info->notes_size = 0;
+ for (i = 0; i < info->numnote; i++)
+ info->notes_size += note_size(&info->notes[i]);
+
+ /* read and fill status of all threads */
+ cpu_list_lock();
+ for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
+ if (cpu == thread_env)
+ continue;
+ fill_thread_info(info, cpu);
+ }
+ cpu_list_unlock();
+
+ return (0);
+}
+
+static void free_note_info(struct elf_note_info *info)
+{
+ struct elf_thread_status *ets;
+
+ while (!TAILQ_EMPTY(&info->thread_list)) {
+ ets = TAILQ_FIRST(&info->thread_list);
+ TAILQ_REMOVE(&info->thread_list, ets, ets_link);
+ qemu_free(ets);
+ }
+
+ qemu_free(info->prstatus);
+ qemu_free(info->psinfo);
+ qemu_free(info->notes);
+}
+
+static int write_note_info(struct elf_note_info *info, int fd)
+{
+ struct elf_thread_status *ets;
+ int i, error = 0;
+
+ /* write prstatus, psinfo and auxv for current thread */
+ for (i = 0; i < info->numnote; i++)
+ if ((error = write_note(&info->notes[i], fd)) != 0)
+ return (error);
+
+ /* write prstatus for each thread */
+ for (ets = info->thread_list.tqh_first; ets != NULL;
+ ets = ets->ets_link.tqe_next) {
+ if ((error = write_note(&ets->notes[0], fd)) != 0)
+ return (error);
+ }
+
+ return (0);
+}
+
+/*
+ * Write out ELF coredump.
+ *
+ * See documentation of ELF object file format in:
+ * http://www.caldera.com/developers/devspecs/gabi41.pdf
+ *
+ * Coredump format in linux is following:
+ *
+ * 0 +----------------------+ \
+ * | ELF header | ET_CORE |
+ * +----------------------+ |
+ * | ELF program headers | |--- headers
+ * | - NOTE section | |
+ * | - PT_LOAD sections | |
+ * +----------------------+ /
+ * | NOTEs: |
+ * | - NT_PRSTATUS |
+ * | - NT_PRSINFO |
+ * | - NT_AUXV |
+ * +----------------------+ <-- aligned to target page
+ * | Process memory dump |
+ * : :
+ * . .
+ * : :
+ * | |
+ * +----------------------+
+ *
+ * NT_PRSTATUS -> struct elf_prstatus (per thread)
+ * NT_PRSINFO -> struct elf_prpsinfo
+ * NT_AUXV is array of { type, value } pairs (see fill_auxv_note()).
+ *
+ * Format follows System V format as close as possible. Current
+ * version limitations are as follows:
+ * - no floating point registers are dumped
+ *
+ * Function returns 0 in case of success, negative errno otherwise.
+ *
+ * TODO: make this work also during runtime: it should be
+ * possible to force coredump from running process and then
+ * continue processing. For example qemu could set up SIGUSR2
+ * handler (provided that target process haven't registered
+ * handler for that) that does the dump when signal is received.
+ */
+static int elf_core_dump(int signr, const CPUState *env)
+{
+ const TaskState *ts = (const TaskState *)env->opaque;
+ struct vm_area_struct *vma = NULL;
+ char corefile[PATH_MAX];
+ struct elf_note_info info;
+ struct elfhdr elf;
+ struct elf_phdr phdr;
+ struct rlimit dumpsize;
+ struct mm_struct *mm = NULL;
+ off_t offset = 0, data_offset = 0;
+ int segs = 0;
+ int fd = -1;
+
+ errno = 0;
+ getrlimit(RLIMIT_CORE, &dumpsize);
+ if (dumpsize.rlim_cur == 0)
+ return 0;
+
+ if (core_dump_filename(ts, corefile, sizeof (corefile)) < 0)
+ return (-errno);
+
+ if ((fd = open(corefile, O_WRONLY | O_CREAT,
+ S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
+ return (-errno);
+
+ /*
+ * Walk through target process memory mappings and
+ * set up structure containing this information. After
+ * this point vma_xxx functions can be used.
+ */
+ if ((mm = vma_init()) == NULL)
+ goto out;
+
+ walk_memory_regions(mm, vma_walker);
+ segs = vma_get_mapping_count(mm);
+
+ /*
+ * Construct valid coredump ELF header. We also
+ * add one more segment for notes.
+ */
+ fill_elf_header(&elf, segs + 1, ELF_MACHINE, 0);
+ if (dump_write(fd, &elf, sizeof (elf)) != 0)
+ goto out;
+
+ /* fill in in-memory version of notes */
+ if (fill_note_info(&info, signr, env) < 0)
+ goto out;
+
+ offset += sizeof (elf); /* elf header */
+ offset += (segs + 1) * sizeof (struct elf_phdr); /* program headers */
+
+ /* write out notes program header */
+ fill_elf_note_phdr(&phdr, info.notes_size, offset);
+
+ offset += info.notes_size;
+ if (dump_write(fd, &phdr, sizeof (phdr)) != 0)
+ goto out;
+
+ /*
+ * ELF specification wants data to start at page boundary so
+ * we align it here.
+ */
+ offset = roundup(offset, ELF_EXEC_PAGESIZE);
+
+ /*
+ * Write program headers for memory regions mapped in
+ * the target process.
+ */
+ for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
+ (void) memset(&phdr, 0, sizeof (phdr));
+
+ phdr.p_type = PT_LOAD;
+ phdr.p_offset = offset;
+ phdr.p_vaddr = vma->vma_start;
+ phdr.p_paddr = 0;
+ phdr.p_filesz = vma_dump_size(vma);
+ offset += phdr.p_filesz;
+ phdr.p_memsz = vma->vma_end - vma->vma_start;
+ phdr.p_flags = vma->vma_flags & PROT_READ ? PF_R : 0;
+ if (vma->vma_flags & PROT_WRITE)
+ phdr.p_flags |= PF_W;
+ if (vma->vma_flags & PROT_EXEC)
+ phdr.p_flags |= PF_X;
+ phdr.p_align = ELF_EXEC_PAGESIZE;
+
+ dump_write(fd, &phdr, sizeof (phdr));
+ }
+
+ /*
+ * Next we write notes just after program headers. No
+ * alignment needed here.
+ */
+ if (write_note_info(&info, fd) < 0)
+ goto out;
+
+ /* align data to page boundary */
+ data_offset = lseek(fd, 0, SEEK_CUR);
+ data_offset = TARGET_PAGE_ALIGN(data_offset);
+ if (lseek(fd, data_offset, SEEK_SET) != data_offset)
+ goto out;
+
+ /*
+ * Finally we can dump process memory into corefile as well.
+ */
+ for (vma = vma_first(mm); vma != NULL; vma = vma_next(vma)) {
+ abi_ulong addr;
+ abi_ulong end;
+
+ end = vma->vma_start + vma_dump_size(vma);
+
+ for (addr = vma->vma_start; addr < end;
+ addr += TARGET_PAGE_SIZE) {
+ char page[TARGET_PAGE_SIZE];
+ int error;
+
+ /*
+ * Read in page from target process memory and
+ * write it to coredump file.
+ */
+ error = copy_from_user(page, addr, sizeof (page));
+ if (error != 0) {
+ (void) fprintf(stderr, "unable to dump " TARGET_FMT_lx "\n",
+ addr);
+ errno = -error;
+ goto out;
+ }
+ if (dump_write(fd, page, TARGET_PAGE_SIZE) < 0)
+ goto out;
+ }
+ }
+
+out:
+ free_note_info(&info);
+ if (mm != NULL)
+ vma_delete(mm);
+ (void) close(fd);
+
+ if (errno != 0)
+ return (-errno);
+ return (0);
}
+#endif /* USE_ELF_CORE_DUMP */
static int load_aout_interp(void * exptr, int interp_fd)
{
return(0);
}
+void do_init_thread(struct target_pt_regs *regs, struct image_info *infop)
+{
+ init_thread(regs, infop);
+}
projects / qemu / blobdiff