virtio-9p: Add stat and mode related helper functions.

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

diff --git a/bsd-user/elfload.c b/bsd-user/elfload.c
index 678f3e6ad9895af068b85ed46bcb34c809c09141..7374912b196d9153ebdb958ad66351b90f18aa2a 100644 (file)
--- a/bsd-user/elfload.c
+++ b/bsd-user/elfload.c
@@ -126,6 +126,9 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
     regs->rax = 0;
     regs->rsp = infop->start_stack;
     regs->rip = infop->entry;
+    if (bsd_type == target_freebsd) {
+        regs->rdi = infop->start_stack;
+    }
 }
 
 #else
@@ -249,8 +252,13 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
 #else
     if (personality(infop->personality) == PER_LINUX32)
         regs->u_regs[14] = infop->start_stack - 16 * 4;
-    else
+    else {
         regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
+        if (bsd_type == target_freebsd) {
+            regs->u_regs[8] = infop->start_stack;
+            regs->u_regs[11] = infop->start_stack;
+        }
+    }
 #endif
 }
 
@@ -545,8 +553,6 @@ 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
@@ -1109,10 +1115,10 @@ static void load_symbols(struct elfhdr *hdr, int fd)
     s->disas_num_syms = nsyms;
 #if ELF_CLASS == ELFCLASS32
     s->disas_symtab.elf32 = syms;
-    s->lookup_symbol = lookup_symbolxx;
+    s->lookup_symbol = (lookup_symbol_t)lookup_symbolxx;
 #else
     s->disas_symtab.elf64 = syms;
-    s->lookup_symbol = lookup_symbolxx;
+    s->lookup_symbol = (lookup_symbol_t)lookup_symbolxx;
 #endif
     s->next = syminfos;
     syminfos = s;
@@ -1248,7 +1254,7 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
             }
 
 #if 0
-            printf("Using ELF interpreter %s\n", elf_interpreter);
+            printf("Using ELF interpreter %s\n", path(elf_interpreter));
 #endif
             if (retval >= 0) {
                 retval = open(path(elf_interpreter), O_RDONLY);
@@ -1270,7 +1276,7 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
             }
             if (retval >= 0) {
                 interp_ex = *((struct exec *) bprm->buf); /* aout exec-header */
-                interp_elf_ex=*((struct elfhdr *) bprm->buf); /* elf exec-header */
+                interp_elf_ex = *((struct elfhdr *) bprm->buf); /* elf exec-header */
             }
             if (retval < 0) {
                 perror("load_elf_binary3");
@@ -1339,6 +1345,29 @@ 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.
+     */
+    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 */
     info->rss = 0;