linux-user: Remove ELFLOAD32.

The ABI-specific types used by linux_binprm and image_info
are different after forcing TARGET_ABI32 on.  Which means
that the parameters that load_elf_binary_multi sees are not
those that loader_exec passed.  This is inherently broken
and is more trouble than it's worth fixing.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Makefile.target

@@ -88,7 +88,6 @@ obj-y = main.o syscall.o strace.o mmap.o signal.o thunk.o \
       elfload.o linuxload.o uaccess.o gdbstub.o cpu-uname.o
 
 obj-$(TARGET_HAS_BFLT) += flatload.o
-obj-$(TARGET_HAS_ELFLOAD32) += elfload32.o
 
 obj-$(TARGET_I386) += vm86.o
 

configure

@@ -2413,7 +2413,6 @@ ln -s $source_path/Makefile.target $target_dir/Makefile
 echo "# Automatically generated by configure - do not modify" > $config_target_mak
 
 bflt="no"
-elfload32="no"
 target_nptl="no"
 interp_prefix1=`echo "$interp_prefix" | sed "s/%M/$target_arch2/g"`
 echo "CONFIG_QEMU_PREFIX=\"$interp_prefix1\"" >> $config_target_mak
@@ -2510,7 +2509,6 @@ case "$target_arch2" in
   ;;
   sparc64)
     TARGET_BASE_ARCH=sparc
-    elfload32="yes"
     target_phys_bits=64
   ;;
   sparc32plus)
@@ -2609,10 +2607,6 @@ if test "$target_user_only" = "yes" \
         -a "$nptl" = "yes" -a "$target_nptl" = "yes"; then
   echo "CONFIG_USE_NPTL=y" >> $config_target_mak
 fi
-# 32 bit ELF loader in addition to native 64 bit loader?
-if test "$target_user_only" = "yes" -a "$elfload32" = "yes"; then
-  echo "TARGET_HAS_ELFLOAD32=y" >> $config_target_mak
-fi
 if test "$target_user_only" = "yes" -a "$guest_base" = "yes"; then
   echo "CONFIG_USE_GUEST_BASE=y" >> $config_target_mak
 fi

linux-user/elfload32.c

@@ -1,30 +0,0 @@
-#define TARGET_ABI32
-#define load_elf_binary load_elf_binary32
-#define do_init_thread do_init_thread32
-
-#include "elfload.c"
-
-#undef load_elf_binary
-#undef do_init_thread
-
-int load_elf_binary(struct linux_binprm *bprm, struct target_pt_regs *regs,
-                    struct image_info *info);
-
-int load_elf_binary_multi(struct linux_binprm *bprm,
-                          struct target_pt_regs *regs,
-                          struct image_info *info)
-{
-    struct elfhdr *elf_ex;
-    int retval;
-
-    elf_ex = (struct elfhdr *) bprm->buf;          /* exec-header */
-    if (elf_ex->e_ident[EI_CLASS] == ELFCLASS64) {
-        retval = load_elf_binary(bprm, regs, info);
-    } else {
-        retval = load_elf_binary32(bprm, regs, info);
-        if (personality(info->personality) == PER_LINUX)
-            info->personality = PER_LINUX32;
-    }
-
-    return retval;
-}

linux-user/linuxload.c

@@ -184,11 +184,7 @@ int loader_exec(const char * filename, char ** argv, char ** envp,
                 && bprm->buf[1] == 'E'
                 && bprm->buf[2] == 'L'
                 && bprm->buf[3] == 'F') {
-#ifndef TARGET_HAS_ELFLOAD32
+            retval = load_elf_binary(bprm, regs, infop);
-            retval = load_elf_binary(bprm,regs,infop);
-#else
-            retval = load_elf_binary_multi(bprm, regs, infop);
-#endif
 #if defined(TARGET_HAS_BFLT)
         } else if (bprm->buf[0] == 'b'
                 && bprm->buf[1] == 'F'

linux-user/qemu.h

@@ -171,11 +171,6 @@ int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
                     struct image_info * info);
 int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
                     struct image_info * info);
-#ifdef TARGET_HAS_ELFLOAD32
-int load_elf_binary_multi(struct linux_binprm *bprm,
-                          struct target_pt_regs *regs,
-                          struct image_info *info);
-#endif
 
 abi_long memcpy_to_target(abi_ulong dest, const void *src,
                           unsigned long len);