Re: [PATCH 9/9] exec/address-spaces: Inline legacy functions

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On 20/9/22 01:17, Bernhard Beschow wrote:
The functions just access a global pointer and perform some pointer
arithmetic on top. Allow the compiler to see through this by inlining.

I thought about this while reviewing the previous patch, ...

Signed-off-by: Bernhard Beschow <shentey@xxxxxxxxx>
---
  include/exec/address-spaces.h | 30 ++++++++++++++++++++++++++----
  softmmu/physmem.c             | 28 ----------------------------
  2 files changed, 26 insertions(+), 32 deletions(-)

diff --git a/include/exec/address-spaces.h b/include/exec/address-spaces.h
index b31bd8dcf0..182af27cad 100644
--- a/include/exec/address-spaces.h
+++ b/include/exec/address-spaces.h
@@ -23,29 +23,51 @@
#ifndef CONFIG_USER_ONLY +#include "hw/boards.h"

... but I'm not a fan of including this header here. It is restricted to system emulation, but still... Let see what the others think.

  /**
   * Get the root memory region.  This is a legacy function, provided for
   * compatibility. Prefer using SysBusState::system_memory directly.
   */
-MemoryRegion *get_system_memory(void);
+inline MemoryRegion *get_system_memory(void)
+{
+    assert(current_machine);
+
+    return &current_machine->main_system_bus.system_memory;
+}
/**
   * Get the root I/O port region.  This is a legacy function, provided for
   * compatibility. Prefer using SysBusState::system_io directly.
   */
-MemoryRegion *get_system_io(void);
+inline MemoryRegion *get_system_io(void)
+{
+    assert(current_machine);
+
+    return &current_machine->main_system_bus.system_io;
+}
/**
   * Get the root memory address space.  This is a legacy function, provided for
   * compatibility. Prefer using SysBusState::address_space_memory directly.
   */
-AddressSpace *get_address_space_memory(void);
+inline AddressSpace *get_address_space_memory(void)
+{
+    assert(current_machine);
+
+    return &current_machine->main_system_bus.address_space_memory;
+}
/**
   * Get the root I/O port address space.  This is a legacy function, provided
   * for compatibility. Prefer using SysBusState::address_space_io directly.
   */
-AddressSpace *get_address_space_io(void);
+inline AddressSpace *get_address_space_io(void)
+{
+    assert(current_machine);
+
+    return &current_machine->main_system_bus.address_space_io;
+}
#endif diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 07e9a9171c..dce088f55c 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2674,34 +2674,6 @@ static void memory_map_init(SysBusState *sysbus)
      address_space_init(&sysbus->address_space_io, system_io, "I/O");
  }
-MemoryRegion *get_system_memory(void)
-{
-    assert(current_machine);
-
-    return &current_machine->main_system_bus.system_memory;
-}
-
-MemoryRegion *get_system_io(void)
-{
-    assert(current_machine);
-
-    return &current_machine->main_system_bus.system_io;
-}
-
-AddressSpace *get_address_space_memory(void)
-{
-    assert(current_machine);
-
-    return &current_machine->main_system_bus.address_space_memory;
-}
-
-AddressSpace *get_address_space_io(void)
-{
-    assert(current_machine);
-
-    return &current_machine->main_system_bus.address_space_io;
-}
-
  static void invalidate_and_set_dirty(MemoryRegion *mr, hwaddr addr,
                                       hwaddr length)
  {




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