Merge tag 'pull-lu-20230808' of https://gitlab.com/rth7680/qemu into staging

linux-user: Adjust guest image layout vs reserved_va
linux-user: Do not adjust image mapping for host page size
linux-user: Adjust initial brk when interpreter is close to executable
util/selfmap: Rewrite using qemu/interval-tree.h
linux-user: Rewrite probe_guest_base

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* tag 'pull-lu-20230808' of https://gitlab.com/rth7680/qemu:
  linux-user: Rewrite non-fixed probe_guest_base
  linux-user: Rewrite fixed probe_guest_base
  linux-user: Consolidate guest bounds check in probe_guest_base
  linux-user: Remove duplicate CPU_LOG_PAGE from probe_guest_base
  util/selfmap: Rewrite using qemu/interval-tree.h
  linux-user: Use zero_bss for PT_LOAD with no file contents too
  linux-user: Do not adjust zero_bss for host page size
  linux-user: Do not adjust image mapping for host page size
  linux-user: Adjust initial brk when interpreter is close to executable
  linux-user: Use elf_et_dyn_base for ET_DYN with interpreter
  linux-user: Use MAP_FIXED_NOREPLACE for initial image mmap
  linux-user: Define ELF_ET_DYN_BASE in $guest/target_mman.h
  linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.h
  linux-user: Adjust task_unmapped_base for reserved_va

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/linux-user/sparc/target_mman.h b/linux-user/sparc/target_mman.h
index 9bad99c852..696ca73fe4 100644
--- a/linux-user/sparc/target_mman.h
+++ b/linux-user/sparc/target_mman.h
@@ -5,6 +5,31 @@
 #define TARGET_MAP_LOCKED              0x100
 #define TARGET_MAP_GROWSDOWN           0x0200
 
+/*
+ * arch/sparc/include/asm/page_64.h:
+ * TASK_UNMAPPED_BASE      (test_thread_flag(TIF_32BIT) ? \
+ *                          _AC(0x0000000070000000,UL) : \
+ *                          VA_EXCLUDE_END)
+ * But VA_EXCLUDE_END is > 0xffff800000000000UL which doesn't work
+ * in userland emulation.
+ */
+#ifdef TARGET_ABI32
+#define TASK_UNMAPPED_BASE      0x70000000
+#else
+#define TASK_UNMAPPED_BASE      (1ull << (TARGET_VIRT_ADDR_SPACE_BITS - 2))
+#endif
+
+/*
+ * arch/sparc/include/asm/elf_64.h
+ * Except that COMPAT_ELF_ET_DYN_BASE exactly matches TASK_UNMAPPED_BASE,
+ * so move it up a bit.
+ */
+#ifdef TARGET_ABI32
+#define ELF_ET_DYN_BASE         0x78000000
+#else
+#define ELF_ET_DYN_BASE         0x0000010000000000ull
+#endif
+
 #include "../generic/target_mman.h"
 
 #endif