[PATCH] Support building on macOS/arm64

On Arm-based Macs, -no_pie is ignored and gives a linker warning. Moreover, the build falls over with:
ld: Absolute addressing not allowed in arm64 code but used in '_image_type_ptr_aisimage' referencing '_image_type_aisimage'
for dumpimage and mkimage, since we put data structs in text sections not data sections and so cannot have dynamic relocations. Instead, move the sections to __DATA and drop disabling PIE.
Signed-off-by: Jessica Clarke jrtc27@jrtc27.com --- Makefile | 5 ----- tools/imagetool.h | 4 ++-- 2 files changed, 2 insertions(+), 7 deletions(-)
diff --git a/Makefile b/Makefile index 3ebb38b113..df3354d9f8 100644 --- a/Makefile +++ b/Makefile @@ -324,11 +324,6 @@ HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") KBUILD_HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") KBUILD_HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
-# since Lion (10.7) ASLR is on by default, but we use linker generated lists -# in some host tools which is a problem then ... so disable ASLR for these -# tools -KBUILD_HOSTLDFLAGS += $(call os_x_before, 10, 7, "", "-Xlinker -no_pie") - # macOS Mojave (10.14.X) # Undefined symbols for architecture x86_64: "_PyArg_ParseTuple" KBUILD_HOSTLDFLAGS += $(call os_x_after, 10, 14, "-lpython -dynamclib", "") diff --git a/tools/imagetool.h b/tools/imagetool.h index 8726792c8c..2801ea9e9f 100644 --- a/tools/imagetool.h +++ b/tools/imagetool.h @@ -273,14 +273,14 @@ int rockchip_copy_image(int fd, struct image_tool_params *mparams);
#define INIT_SECTION(name) do { \ unsigned long name ## _len; \ - char *__cat(pstart_, name) = getsectdata("__TEXT", \ + char *__cat(pstart_, name) = getsectdata("__DATA", \ #name, &__cat(name, _len)); \ char *__cat(pstop_, name) = __cat(pstart_, name) + \ __cat(name, _len); \ __cat(__start_, name) = (void *)__cat(pstart_, name); \ __cat(__stop_, name) = (void *)__cat(pstop_, name); \ } while (0) -#define SECTION(name) __attribute__((section("__TEXT, " #name))) +#define SECTION(name) __attribute__((section("__DATA, " #name)))
struct image_type_params **__start_image_type, **__stop_image_type; #else

On Sat, Mar 20, 2021 at 08:43:05PM +0000, Jessica Clarke wrote:
On Arm-based Macs, -no_pie is ignored and gives a linker warning. Moreover, the build falls over with:
ld: Absolute addressing not allowed in arm64 code but used in '_image_type_ptr_aisimage' referencing '_image_type_aisimage'
for dumpimage and mkimage, since we put data structs in text sections not data sections and so cannot have dynamic relocations. Instead, move the sections to __DATA and drop disabling PIE.
Signed-off-by: Jessica Clarke jrtc27@jrtc27.com
Looking at this, and throwing CI at it to make sure everything is fine elsewhere, this looks good and I'll pick it up for this release.
Reviewed-by: Tom Rini trini@konsulko.com

On Sat, Mar 20, 2021 at 08:43:05PM +0000, Jessica Clarke wrote:
On Arm-based Macs, -no_pie is ignored and gives a linker warning. Moreover, the build falls over with:
ld: Absolute addressing not allowed in arm64 code but used in '_image_type_ptr_aisimage' referencing '_image_type_aisimage'
for dumpimage and mkimage, since we put data structs in text sections not data sections and so cannot have dynamic relocations. Instead, move the sections to __DATA and drop disabling PIE.
Signed-off-by: Jessica Clarke jrtc27@jrtc27.com Reviewed-by: Tom Rini trini@konsulko.com
Applied to u-boot/master, thanks!
participants (2)
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Jessica Clarke
-
Tom Rini