Re: [PATCH 1/3] bsd-user: Remove ELF_START_MMAP and image_info.start_mmap

[Warner Losh]

On Fri, Aug 18, 2023 at 11:57 AM Richard Henderson <richard.henderson@linaro.org> wrote:

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: Warner Losh <imp@bsdimp.com>

This one won't interfere with anything, but unless I hear otherwise, I'll queue it.

It applies to the blitz branch (though it needs a few more targets there), and none

of these files are being modified by Kariim Taha, my gsoc student.

Warner

---
 bsd-user/arm/target_arch_elf.h    | 1 -
 bsd-user/i386/target_arch_elf.h   | 1 -
 bsd-user/qemu.h                   | 1 -
 bsd-user/x86_64/target_arch_elf.h | 1 -
 bsd-user/elfload.c                | 1 -
 5 files changed, 5 deletions(-)

diff --git a/bsd-user/arm/target_arch_elf.h b/bsd-user/arm/target_arch_elf.h
index 935bce347f..b1c0fd2b32 100644
--- a/bsd-user/arm/target_arch_elf.h
+++ b/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)
diff --git a/bsd-user/i386/target_arch_elf.h b/bsd-user/i386/target_arch_elf.h
index cbcd1f08e2..4ac27b02e7 100644
--- a/bsd-user/i386/target_arch_elf.h
+++ b/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))

diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 8f2d6a3c78..178114b423 100644
--- a/bsd-user/qemu.h
+++ b/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;
diff --git a/bsd-user/x86_64/target_arch_elf.h b/bsd-user/x86_64/target_arch_elf.h
index b244711888..e51c2faf08 100644
--- a/bsd-user/x86_64/target_arch_elf.h
+++ b/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))

diff --git a/bsd-user/elfload.c b/bsd-user/elfload.c
index 1f650bdde8..38a3439d2c 100644
--- a/bsd-user/elfload.c
+++ b/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;

--
2.34.1