diff options
| author | Andrew Thoelke <andrew.thoelke@arm.com> | 2014-03-18 07:13:52 +0000 |
|---|---|---|
| committer | Andrew Thoelke <andrew.thoelke@arm.com> | 2014-03-26 21:54:37 +0000 |
| commit | dccc537a7243d784e0b8b81ce1634e385c3b048b (patch) | |
| tree | ffe79e5b2d764b904dd7253df1e9983da5e6b132 | |
| parent | 2eb01d341ff14c003d381cde97fbccdab4737afd (diff) | |
Use --gc-sections during link
All common functions are being built into all binary images,
whether or not they are actually used. This change enables the
use of -ffunction-sections, -fdata-sections and --gc-sections
in the compiler and linker to remove unused code and data from
the images.
Change-Id: Ia9f78c01054ac4fa15d145af38b88a0d6fb7d409
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | bl1/bl1.ld.S | 8 | ||||
| -rw-r--r-- | bl2/bl2.ld.S | 8 | ||||
| -rw-r--r-- | bl31/bl31.ld.S | 12 | ||||
| -rw-r--r-- | bl32/tsp/tsp.ld.S | 8 |
5 files changed, 20 insertions, 18 deletions
@@ -150,8 +150,10 @@ ASFLAGS += -nostdinc -ffreestanding -Wa,--fatal-warnings \ CFLAGS := -nostdinc -pedantic -ffreestanding -Wall \ -Werror -mgeneral-regs-only -std=c99 -c -Os \ -DDEBUG=${DEBUG} ${INCLUDES} ${CFLAGS} +CFLAGS += -ffunction-sections -fdata-sections LDFLAGS += --fatal-warnings -O1 +LDFLAGS += --gc-sections vpath %.ld.S bl1:bl2:bl31 diff --git a/bl1/bl1.ld.S b/bl1/bl1.ld.S index 012ff582..81c54435 100644 --- a/bl1/bl1.ld.S +++ b/bl1/bl1.ld.S @@ -43,8 +43,8 @@ SECTIONS { ro : { __RO_START__ = .; - *bl1_entrypoint.o(.text) - *(.text) + *bl1_entrypoint.o(.text*) + *(.text*) *(.rodata*) *(.vectors) __RO_END__ = .; @@ -57,7 +57,7 @@ SECTIONS . = NEXT(16); /* Align LMA */ .data : ALIGN(16) { /* Align VMA */ __DATA_RAM_START__ = .; - *(.data) + *(.data*) __DATA_RAM_END__ = .; } >RAM AT>ROM @@ -73,7 +73,7 @@ SECTIONS */ .bss : ALIGN(16) { __BSS_START__ = .; - *(.bss) + *(.bss*) *(COMMON) __BSS_END__ = .; } >RAM diff --git a/bl2/bl2.ld.S b/bl2/bl2.ld.S index 09dec758..edb676af 100644 --- a/bl2/bl2.ld.S +++ b/bl2/bl2.ld.S @@ -47,8 +47,8 @@ SECTIONS ro . : { __RO_START__ = .; - *bl2_entrypoint.o(.text) - *(.text) + *bl2_entrypoint.o(.text*) + *(.text*) *(.rodata*) *(.vectors) __RO_END_UNALIGNED__ = .; @@ -63,7 +63,7 @@ SECTIONS .data . : { __DATA_START__ = .; - *(.data) + *(.data*) __DATA_END__ = .; } >RAM @@ -79,7 +79,7 @@ SECTIONS */ .bss : ALIGN(16) { __BSS_START__ = .; - *(SORT_BY_ALIGNMENT(.bss)) + *(SORT_BY_ALIGNMENT(.bss*)) *(COMMON) __BSS_END__ = .; } >RAM diff --git a/bl31/bl31.ld.S b/bl31/bl31.ld.S index 844f1696..1b818f5e 100644 --- a/bl31/bl31.ld.S +++ b/bl31/bl31.ld.S @@ -48,14 +48,14 @@ SECTIONS ro . : { __RO_START__ = .; - *bl31_entrypoint.o(.text) - *(.text) + *bl31_entrypoint.o(.text*) + *(.text*) *(.rodata*) - /* Ensure 8-byte alignment for descriptors */ + /* Ensure 8-byte alignment for descriptors and ensure inclusion */ . = ALIGN(8); __RT_SVC_DESCS_START__ = .; - *(rt_svc_descs) + KEEP(*(rt_svc_descs)) __RT_SVC_DESCS_END__ = .; *(.vectors) @@ -71,7 +71,7 @@ SECTIONS .data . : { __DATA_START__ = .; - *(.data) + *(.data*) __DATA_END__ = .; } >RAM @@ -87,7 +87,7 @@ SECTIONS */ .bss : ALIGN(16) { __BSS_START__ = .; - *(.bss) + *(.bss*) *(COMMON) __BSS_END__ = .; } >RAM diff --git a/bl32/tsp/tsp.ld.S b/bl32/tsp/tsp.ld.S index 74b03ad5..53bce7d5 100644 --- a/bl32/tsp/tsp.ld.S +++ b/bl32/tsp/tsp.ld.S @@ -48,8 +48,8 @@ SECTIONS ro . : { __RO_START__ = .; - *tsp_entrypoint.o(.text) - *(.text) + *tsp_entrypoint.o(.text*) + *(.text*) *(.rodata*) *(.vectors) __RO_END_UNALIGNED__ = .; @@ -64,7 +64,7 @@ SECTIONS .data . : { __DATA_START__ = .; - *(.data) + *(.data*) __DATA_END__ = .; } >RAM @@ -80,7 +80,7 @@ SECTIONS */ .bss : ALIGN(16) { __BSS_START__ = .; - *(SORT_BY_ALIGNMENT(.bss)) + *(SORT_BY_ALIGNMENT(.bss*)) *(COMMON) __BSS_END__ = .; } >RAM |