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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2023-10-24 08:30:47 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-11-02 22:38:01 -0400 |
| commit | be6a249b417fb159db6fc3f4b7d72eb2fd036554 (patch) | |
| tree | 273285cfbf999e57ac8a402c5ce0e43373156de9 /arch | |
| parent | a4ed4c8a51435a63ca79e6d7bca317eff30e9ed3 (diff) | |
| download | u-boot-be6a249b417fb159db6fc3f4b7d72eb2fd036554.zip u-boot-be6a249b417fb159db6fc3f4b7d72eb2fd036554.tar.gz u-boot-be6a249b417fb159db6fc3f4b7d72eb2fd036554.tar.bz2 | |
sandbox: eliminate unused functions from binaries
The sandbox should closely mimic other architectures.
Place each function or data in a separate section and let the linker
eliminate unused ones. This will reduce the binary size.
In the linker script mark that u_boot_sandbox_getopt are to be kept.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sandbox/config.mk | 4 | ||||
| -rw-r--r-- | arch/sandbox/cpu/u-boot.lds | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/sandbox/config.mk b/arch/sandbox/config.mk index 2d184c5..1d50991 100644 --- a/arch/sandbox/config.mk +++ b/arch/sandbox/config.mk @@ -2,7 +2,7 @@ # Copyright (c) 2011 The Chromium OS Authors. PLATFORM_CPPFLAGS += -D__SANDBOX__ -U_FORTIFY_SOURCE -PLATFORM_CPPFLAGS += -fPIC +PLATFORM_CPPFLAGS += -fPIC -ffunction-sections -fdata-sections PLATFORM_LIBS += -lrt SDL_CONFIG ?= sdl2-config @@ -30,7 +30,7 @@ cmd_u-boot__ = $(CC) -o $@ -Wl,-T u-boot.lds $(u-boot-init) \ $(u-boot-main) \ $(u-boot-keep-syms-lto) \ -Wl,--no-whole-archive \ - $(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map + $(PLATFORM_LIBS) -Wl,-Map -Wl,u-boot.map -Wl,--gc-sections cmd_u-boot-spl = (cd $(obj) && $(CC) -o $(SPL_BIN) -Wl,-T u-boot-spl.lds \ $(KBUILD_LDFLAGS:%=-Wl,%) \ diff --git a/arch/sandbox/cpu/u-boot.lds b/arch/sandbox/cpu/u-boot.lds index ba8dee5..52f13af 100644 --- a/arch/sandbox/cpu/u-boot.lds +++ b/arch/sandbox/cpu/u-boot.lds @@ -15,7 +15,7 @@ SECTIONS _u_boot_sandbox_getopt : { *(_u_boot_sandbox_getopt_start) - *(_u_boot_sandbox_getopt) + KEEP(*(_u_boot_sandbox_getopt)) *(_u_boot_sandbox_getopt_end) } |