migration/multifd: initialize packet->magic/version once at setup stage

[mirror_qemu.git] / bsd-user / elfload.c

diff --git a/bsd-user/elfload.c b/bsd-user/elfload.c
index 1ef1f972fc9a538ef2a515a30fc3f70b53b36f8a..32378af7b2ec90c037f7517d8adee7925d9d3fe6 100644 (file)
--- a/bsd-user/elfload.c
+++ b/bsd-user/elfload.c
@@ -1,16 +1,10 @@
 /* This is the Linux kernel elf-loading code, ported into user space */
 
-#include <stdio.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <stdlib.h>
-#include <string.h>
+#include "qemu/osdep.h"
 
 #include "qemu.h"
-#include "disas.h"
+#include "disas/disas.h"
+#include "qemu/path.h"
 
 #ifdef _ARCH_PPC64
 #undef ARCH_DLINFO
@@ -98,7 +92,7 @@ enum {
 static const char *get_elf_platform(void)
 {
     static char elf_platform[] = "i386";
-    int family = (thread_env->cpuid_version >> 8) & 0xff;
+    int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
     if (family > 6)
         family = 6;
     if (family >= 3)
@@ -110,7 +104,9 @@ static const char *get_elf_platform(void)
 
 static uint32_t get_elf_hwcap(void)
 {
-  return thread_env->cpuid_features;
+    X86CPU *cpu = X86_CPU(thread_cpu);
+
+    return cpu->env.features[FEAT_1_EDX];
 }
 
 #ifdef TARGET_X86_64
@@ -349,8 +345,10 @@ static inline void init_thread(struct target_pt_regs *_regs, struct image_info *
 
     _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;
+    get_user_u64(entry, infop->entry);
+    entry += infop->load_addr;
+    get_user_u64(toc, infop->entry + 8);
+    toc += infop->load_addr;
     _regs->gpr[2] = toc;
     infop->entry = entry;
 #endif
@@ -363,8 +361,9 @@ static inline void init_thread(struct target_pt_regs *_regs, struct image_info *
     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);
+    for (tmp = 1; tmp != 0; pos += sizeof(abi_ulong)) {
+        get_user_ual(tmp, pos);
+    }
     _regs->gpr[5] = pos;
 }
 
@@ -641,8 +640,7 @@ static abi_ulong copy_elf_strings(int argc,char ** argv, void **page,
                 offset = p % TARGET_PAGE_SIZE;
                 pag = (char *)page[p/TARGET_PAGE_SIZE];
                 if (!pag) {
-                    pag = (char *)malloc(TARGET_PAGE_SIZE);
-                    memset(pag, 0, TARGET_PAGE_SIZE);
+                    pag = g_try_malloc0(TARGET_PAGE_SIZE);
                     page[p/TARGET_PAGE_SIZE] = pag;
                     if (!pag)
                         return 0;
@@ -696,7 +694,7 @@ static abi_ulong setup_arg_pages(abi_ulong p, struct linux_binprm *bprm,
             info->rss++;
             /* 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]);
+            g_free(bprm->page[i]);
         }
         stack_base += TARGET_PAGE_SIZE;
     }
@@ -736,8 +734,7 @@ static void padzero(abi_ulong elf_bss, abi_ulong last_bss)
            size must be known */
         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_addr1 = REAL_HOST_PAGE_ALIGN(elf_bss);
             end_addr = HOST_PAGE_ALIGN(elf_bss);
             if (end_addr1 < end_addr) {
                 mmap((void *)g2h(end_addr1), end_addr - end_addr1,
@@ -994,12 +991,12 @@ static abi_ulong load_elf_interp(struct elfhdr * interp_elf_ex,
 
 static int symfind(const void *s0, const void *s1)
 {
-    struct elf_sym *key = (struct elf_sym *)s0;
+    target_ulong addr = *(target_ulong *)s0;
     struct elf_sym *sym = (struct elf_sym *)s1;
     int result = 0;
-    if (key->st_value < sym->st_value) {
+    if (addr < sym->st_value) {
         result = -1;
-    } else if (key->st_value > sym->st_value + sym->st_size) {
+    } else if (addr >= sym->st_value + sym->st_size) {
         result = 1;
     }
     return result;
@@ -1014,12 +1011,9 @@ static const char *lookup_symbolxx(struct syminfo *s, target_ulong orig_addr)
 #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);
+    sym = bsearch(&orig_addr, syms, s->disas_num_syms, sizeof(*syms), symfind);
     if (sym != NULL) {
         return s->disas_strtab + sym->st_name;
     }
@@ -1161,21 +1155,20 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
     unsigned int interpreter_type = INTERPRETER_NONE;
     unsigned char ibcs2_interpreter;
     int i;
-    abi_ulong mapped_addr;
     struct elf_phdr * elf_ppnt;
     struct elf_phdr *elf_phdata;
     abi_ulong elf_bss, k, elf_brk;
     int retval;
     char * elf_interpreter;
     abi_ulong elf_entry, interp_load_addr = 0;
-    int status;
     abi_ulong start_code, end_code, start_data, end_data;
     abi_ulong reloc_func_desc = 0;
-    abi_ulong elf_stack;
+#ifdef LOW_ELF_STACK
+    abi_ulong elf_stack = ~((abi_ulong)0UL);
+#endif
     char passed_fileno[6];
 
     ibcs2_interpreter = 0;
-    status = 0;
     load_addr = 0;
     load_bias = 0;
     elf_ex = *((struct elfhdr *) bprm->buf);          /* exec-header */
@@ -1227,7 +1220,6 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
     elf_brk = 0;
 
 
-    elf_stack = ~((abi_ulong)0UL);
     elf_interpreter = NULL;
     start_code = ~((abi_ulong)0UL);
     end_code = 0;
@@ -1354,9 +1346,7 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
             }
         }
         if (!bprm->p) {
-            if (elf_interpreter) {
-                free(elf_interpreter);
-            }
+            free(elf_interpreter);
             free (elf_phdata);
             close(bprm->fd);
             return -E2BIG;
@@ -1370,7 +1360,6 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
     info->mmap = 0;
     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.
@@ -1378,7 +1367,7 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
     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
+         * 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;
@@ -1391,7 +1380,6 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
             }
         }
     }
-#endif /* CONFIG_USE_GUEST_BASE */
 
     /* Do this so that we can load the interpreter, if need be.  We will
        change some of these later */
@@ -1556,7 +1544,7 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
                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, qemu_host_page_size, PROT_READ | PROT_EXEC,
+            target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC,
                                       MAP_FIXED | MAP_PRIVATE, -1, 0);
     }