linux-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.
Logically, this has been replaced by task_unmapped_base.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/elfload.c

@@ -143,8 +143,6 @@ static uint32_t get_elf_hwcap(void)
 }
 
 #ifdef TARGET_X86_64
-#define ELF_START_MMAP 0x2aaaaab000ULL
-
 #define ELF_CLASS      ELFCLASS64
 #define ELF_ARCH       EM_X86_64
 
@@ -221,8 +219,6 @@ static bool init_guest_commpage(void)
 #endif
 #else
 
-#define ELF_START_MMAP 0x80000000
-
 /*
  * This is used to ensure we don't load something for the wrong architecture.
  */
@@ -308,8 +304,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *en
 #ifndef TARGET_AARCH64
 /* 32 bit ARM definitions */
 
-#define ELF_START_MMAP 0x80000000
-
 #define ELF_ARCH        EM_ARM
 #define ELF_CLASS       ELFCLASS32
 #define EXSTACK_DEFAULT true
@@ -600,7 +594,6 @@ static const char *get_elf_platform(void)
 
 #else
 /* 64 bit ARM definitions */
-#define ELF_START_MMAP 0x80000000
 
 #define ELF_ARCH        EM_AARCH64
 #define ELF_CLASS       ELFCLASS64
@@ -871,7 +864,6 @@ const char *elf_hwcap2_str(uint32_t bit)
 #ifdef TARGET_SPARC
 #ifdef TARGET_SPARC64
 
-#define ELF_START_MMAP 0x80000000
 #define ELF_HWCAP  (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
                     | HWCAP_SPARC_MULDIV | HWCAP_SPARC_V9)
 #ifndef TARGET_ABI32
@@ -883,7 +875,6 @@ const char *elf_hwcap2_str(uint32_t bit)
 #define ELF_CLASS   ELFCLASS64
 #define ELF_ARCH    EM_SPARCV9
 #else
-#define ELF_START_MMAP 0x80000000
 #define ELF_HWCAP  (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
                     | HWCAP_SPARC_MULDIV)
 #define ELF_CLASS   ELFCLASS32
@@ -905,7 +896,6 @@ static inline void init_thread(struct target_pt_regs *regs,
 #ifdef TARGET_PPC
 
 #define ELF_MACHINE    PPC_ELF_MACHINE
-#define ELF_START_MMAP 0x80000000
 
 #if defined(TARGET_PPC64)
 
@@ -1108,8 +1098,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *en
 
 #ifdef TARGET_LOONGARCH64
 
-#define ELF_START_MMAP 0x80000000
-
 #define ELF_CLASS   ELFCLASS64
 #define ELF_ARCH    EM_LOONGARCH
 #define EXSTACK_DEFAULT true
@@ -1200,8 +1188,6 @@ static uint32_t get_elf_hwcap(void)
 
 #ifdef TARGET_MIPS
 
-#define ELF_START_MMAP 0x80000000
-
 #ifdef TARGET_MIPS64
 #define ELF_CLASS   ELFCLASS64
 #else
@@ -1359,8 +1345,6 @@ static uint32_t get_elf_hwcap(void)
 
 #ifdef TARGET_MICROBLAZE
 
-#define ELF_START_MMAP 0x80000000
-
 #define elf_check_arch(x) ( (x) == EM_MICROBLAZE || (x) == EM_MICROBLAZE_OLD)
 
 #define ELF_CLASS   ELFCLASS32
@@ -1401,8 +1385,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env
 
 #ifdef TARGET_NIOS2
 
-#define ELF_START_MMAP 0x80000000
-
 #define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
 
 #define ELF_CLASS   ELFCLASS32
@@ -1498,8 +1480,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs,
 
 #ifdef TARGET_OPENRISC
 
-#define ELF_START_MMAP 0x08000000
-
 #define ELF_ARCH EM_OPENRISC
 #define ELF_CLASS ELFCLASS32
 #define ELF_DATA  ELFDATA2MSB
@@ -1536,8 +1516,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs,
 
 #ifdef TARGET_SH4
 
-#define ELF_START_MMAP 0x80000000
-
 #define ELF_CLASS ELFCLASS32
 #define ELF_ARCH  EM_SH
 
@@ -1618,8 +1596,6 @@ static uint32_t get_elf_hwcap(void)
 
 #ifdef TARGET_CRIS
 
-#define ELF_START_MMAP 0x80000000
-
 #define ELF_CLASS ELFCLASS32
 #define ELF_ARCH  EM_CRIS
 
@@ -1635,8 +1611,6 @@ static inline void init_thread(struct target_pt_regs *regs,
 
 #ifdef TARGET_M68K
 
-#define ELF_START_MMAP 0x80000000
-
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_68K
 
@@ -1686,8 +1660,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUM68KState *e
 
 #ifdef TARGET_ALPHA
 
-#define ELF_START_MMAP (0x30000000000ULL)
-
 #define ELF_CLASS      ELFCLASS64
 #define ELF_ARCH       EM_ALPHA
 
@@ -1705,8 +1677,6 @@ static inline void init_thread(struct target_pt_regs *regs,
 
 #ifdef TARGET_S390X
 
-#define ELF_START_MMAP (0x20000000000ULL)
-
 #define ELF_CLASS	ELFCLASS64
 #define ELF_DATA	ELFDATA2MSB
 #define ELF_ARCH	EM_S390
@@ -1817,7 +1787,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs,
 
 #ifdef TARGET_RISCV
 
-#define ELF_START_MMAP 0x80000000
 #define ELF_ARCH  EM_RISCV
 
 #ifdef TARGET_RISCV32
@@ -1853,7 +1822,6 @@ static inline void init_thread(struct target_pt_regs *regs,
 
 #ifdef TARGET_HPPA
 
-#define ELF_START_MMAP  0x80000000
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_PARISC
 #define ELF_PLATFORM    "PARISC"
@@ -1905,8 +1873,6 @@ static bool init_guest_commpage(void)
 
 #ifdef TARGET_XTENSA
 
-#define ELF_START_MMAP 0x20000000
-
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_XTENSA
 
@@ -1972,8 +1938,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs,
 
 #ifdef TARGET_HEXAGON
 
-#define ELF_START_MMAP 0x20000000
-
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_HEXAGON
 
@@ -3690,8 +3654,6 @@ int load_elf_binary(struct linux_binprm *bprm, struct image_info *info)
     interp_info.fp_abi = MIPS_ABI_FP_UNKNOWN;
 #endif
 
-    info->start_mmap = (abi_ulong)ELF_START_MMAP;
-
     load_elf_image(bprm->filename, bprm->fd, info,
                    &elf_interpreter, bprm->buf);
 

linux-user/qemu.h

@@ -30,7 +30,6 @@ struct image_info {
         abi_ulong       start_data;
         abi_ulong       end_data;
         abi_ulong       brk;
-        abi_ulong       start_mmap;
         abi_ulong       start_stack;
         abi_ulong       stack_limit;
         abi_ulong       entry;