bsd-user: Remove ELF_START_MMAP and image_info.start_mmap

The start_mmap value is write-only.
Remove the field and the defines that populated it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230818175736.144194-2-richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>

bsd-user/arm/target_arch_elf.h

@@ -20,7 +20,6 @@
 #ifndef TARGET_ARCH_ELF_H
 #define TARGET_ARCH_ELF_H
 
-#define ELF_START_MMAP 0x80000000
 #define ELF_ET_DYN_LOAD_ADDR    0x500000
 
 #define elf_check_arch(x) ((x) == EM_ARM)

bsd-user/elfload.c

@@ -738,7 +738,6 @@ int load_elf_binary(struct bsd_binprm *bprm, struct target_pt_regs *regs,
     /* OK, This is the point of no return */
     info->end_data = 0;
     info->end_code = 0;
-    info->start_mmap = (abi_ulong)ELF_START_MMAP;
     info->mmap = 0;
     elf_entry = (abi_ulong) elf_ex.e_entry;
 

bsd-user/i386/target_arch_elf.h

@@ -20,7 +20,6 @@
 #ifndef TARGET_ARCH_ELF_H
 #define TARGET_ARCH_ELF_H
 
-#define ELF_START_MMAP 0x80000000
 #define ELF_ET_DYN_LOAD_ADDR    0x01001000
 #define elf_check_arch(x) (((x) == EM_386) || ((x) == EM_486))
 

bsd-user/qemu.h

@@ -52,7 +52,6 @@ struct image_info {
     abi_ulong end_data;
     abi_ulong start_brk;
     abi_ulong brk;
-    abi_ulong start_mmap;
     abi_ulong mmap;
     abi_ulong rss;
     abi_ulong start_stack;

bsd-user/x86_64/target_arch_elf.h

@@ -20,7 +20,6 @@
 #ifndef TARGET_ARCH_ELF_H
 #define TARGET_ARCH_ELF_H
 
-#define ELF_START_MMAP 0x2aaaaab000ULL
 #define ELF_ET_DYN_LOAD_ADDR    0x01021000
 #define elf_check_arch(x) (((x) == ELF_ARCH))