[rtems commit] arm/xilinx_zynq: Add per-section compilation and linking support

Fri Mar 11 20:14:54 UTC 2016

Module:    rtems
Branch:    master
Commit:    5460722d8d17fb6dc34bfca217b88369a8094260
Changeset: http://git.rtems.org/rtems/commit/?id=5460722d8d17fb6dc34bfca217b88369a8094260

Author:    Joel Sherrill <joel at rtems.org>
Date:      Thu Mar 10 14:12:53 2016 -0600

arm/xilinx_zynq: Add per-section compilation and linking support

updates #2577.

For the xilinx_zynq_a9_qemu BSP variant without this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
 138192	   1804	268279008	268419004	fffbfbc	ticker.exe
 102885	   1564	268314576	268419025	fffbfd1	minimum.exe
 632900	   2092	267784004	268418996	fffbfb4	cxx_iostream.exe
 606214	   6048	267806752	268419014	fffbfc6	fileio.exe
 479152	  14448	267925424	268419024	fffbfd0	pppd.exe
 228076	   2560	268188360	268418996	fffbfb4	capture.exe
 148874	   1892	268268260	268419026	fffbfd2	nsecs.exe
 209448	   2212	268207368	268419028	fffbfd4	paranoia.exe
 201620	   1828	268215560	268419008	fffbfc0	cdtest.exe
 133988	   1804	268283212	268419004	fffbfbc	base_sp.exe
 137872	   1836	268279296	268419004	fffbfbc	unlimited.exe
 135040	   1780	268282192	268419012	fffbfc4	hello.exe
 297812	   6820	268114384	268419016	fffbfc8	loopback.exe

For the xilinx_zynq_a9_qemu BSP variant with this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
 138192	   1804	268279008	268419004	fffbfbc	ticker.exe
 102885	   1564	268314576	268419025	fffbfd1	minimum.exe
 632900	   2092	267784004	268418996	fffbfb4	cxx_iostream.exe
 606214	   6048	267806752	268419014	fffbfc6	fileio.exe
 479152	  14448	267925424	268419024	fffbfd0	pppd.exe
 228076	   2560	268188360	268418996	fffbfb4	capture.exe
 148874	   1892	268268260	268419026	fffbfd2	nsecs.exe
 209448	   2212	268207368	268419028	fffbfd4	paranoia.exe
 201620	   1828	268215560	268419008	fffbfc0	cdtest.exe
 133988	   1804	268283212	268419004	fffbfbc	base_sp.exe
 137872	   1836	268279296	268419004	fffbfbc	unlimited.exe
 135040	   1780	268282192	268419012	fffbfc4	hello.exe
 297812	   6820	268114384	268419016	fffbfc8	loopback.exe

For the xilinx_zynq_zc702 BSP variant without this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  71228	   1804	1072603792	1072676824	3fefbfd8	ticker.exe
  48069	   1564	1072627212	1072676845	3fefbfed	minimum.exe
 563744	   2092	1072110984	1072676820	3fefbfd4	cxx_iostream.exe
 406598	   5888	1072264352	1072676838	3fefbfe6	fileio.exe
 313164	  12704	1072350960	1072676828	3fefbfdc	pppd.exe
 139572	   2440	1072534816	1072676828	3fefbfdc	capture.exe
  83026	   1892	1072591928	1072676846	3fefbfee	nsecs.exe
 121060	   2188	1072553576	1072676824	3fefbfd8	paranoia.exe
 133888	   1828	1072541112	1072676828	3fefbfdc	cdtest.exe
  69008	   1804	1072606012	1072676824	3fefbfd8	base_sp.exe
  71268	   1836	1072603720	1072676824	3fefbfd8	unlimited.exe
  76260	   1780	1072598792	1072676832	3fefbfe0	hello.exe
 188672	   6596	1072481568	1072676836	3fefbfe4	loopback.exe

For the xilinx_zynq_zc702 BSP variant with this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  65168	   1788	1072609884	1072676840	3fefbfe8	ticker.exe
  30184	   1492	1072645164	1072676840	3fefbfe8	minimum.exe
 350588	   2044	1072324204	1072676836	3fefbfe4	cxx_iostream.exe
 393310	   5872	1072277640	1072676822	3fefbfd6	fileio.exe
 289480	  12548	1072374820	1072676848	3fefbff0	pppd.exe
 131740	   2416	1072542680	1072676836	3fefbfe4	capture.exe
  77306	   1876	1072597648	1072676830	3fefbfde	nsecs.exe
 114932	   2164	1072559736	1072676832	3fefbfe0	paranoia.exe
 125904	   1812	1072549128	1072676844	3fefbfec	cdtest.exe
  62824	   1788	1072612228	1072676840	3fefbfe8	base_sp.exe
  63148	   1796	1072611904	1072676848	3fefbff0	unlimited.exe
  67820	   1724	1072607296	1072676840	3fefbfe8	hello.exe
 173288	   6484	1072497056	1072676828	3fefbfdc	loopback.exe

For the xilinx_zynq_zc706 BSP variant without this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  71228	   1804	1069458064	1069531096	3fbfbfd8	ticker.exe
  48069	   1564	1069481484	1069531117	3fbfbfed	minimum.exe
 563744	   2092	1068965256	1069531092	3fbfbfd4	cxx_iostream.exe
 406598	   5888	1069118624	1069531110	3fbfbfe6	fileio.exe
 313164	  12704	1069205232	1069531100	3fbfbfdc	pppd.exe
 139572	   2440	1069389088	1069531100	3fbfbfdc	capture.exe
  83026	   1892	1069446200	1069531118	3fbfbfee	nsecs.exe
 121060	   2188	1069407848	1069531096	3fbfbfd8	paranoia.exe
 133888	   1828	1069395384	1069531100	3fbfbfdc	cdtest.exe
  69008	   1804	1069460284	1069531096	3fbfbfd8	base_sp.exe
  71268	   1836	1069457992	1069531096	3fbfbfd8	unlimited.exe
  76260	   1780	1069453064	1069531104	3fbfbfe0	hello.exe
 188672	   6596	1069335840	1069531108	3fbfbfe4	loopback.exe

For the xilinx_zynq_zc706 BSP variant with this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  65168	   1788	1069464156	1069531112	3fbfbfe8	ticker.exe
  30184	   1492	1069499436	1069531112	3fbfbfe8	minimum.exe
 350588	   2044	1069178476	1069531108	3fbfbfe4	cxx_iostream.exe
 393310	   5872	1069131912	1069531094	3fbfbfd6	fileio.exe
 289480	  12548	1069229092	1069531120	3fbfbff0	pppd.exe
 131740	   2416	1069396952	1069531108	3fbfbfe4	capture.exe
  77306	   1876	1069451920	1069531102	3fbfbfde	nsecs.exe
 114932	   2164	1069414008	1069531104	3fbfbfe0	paranoia.exe
 125904	   1812	1069403400	1069531116	3fbfbfec	cdtest.exe
  62824	   1788	1069466500	1069531112	3fbfbfe8	base_sp.exe
  63148	   1796	1069466176	1069531120	3fbfbff0	unlimited.exe
  67820	   1724	1069461568	1069531112	3fbfbfe8	hello.exe
 173288	   6484	1069351328	1069531100	3fbfbfdc	loopback.exe

For the xilinx_zynq_zedboard BSP variant without this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  71228	   1804	535732880	535805912	1fefbfd8	ticker.exe
  48069	   1564	535756300	535805933	1fefbfed	minimum.exe
 563744	   2092	535240072	535805908	1fefbfd4	cxx_iostream.exe
 406601	   5888	535393436	535805925	1fefbfe5	fileio.exe
 313164	  12704	535480048	535805916	1fefbfdc	pppd.exe
 139572	   2440	535663904	535805916	1fefbfdc	capture.exe
  83026	   1892	535721016	535805934	1fefbfee	nsecs.exe
 121060	   2188	535682664	535805912	1fefbfd8	paranoia.exe
 133888	   1828	535670200	535805916	1fefbfdc	cdtest.exe
  69008	   1804	535735100	535805912	1fefbfd8	base_sp.exe
  71268	   1836	535732808	535805912	1fefbfd8	unlimited.exe
  76260	   1780	535727880	535805920	1fefbfe0	hello.exe
 188672	   6596	535610656	535805924	1fefbfe4	loopback.exe

For the xilinx_zynq_zedboard BSP variant with this option,
sample executables sizes were as follows:

   text	   data	    bss	    	  dec	    	  hex	filename
  65168	   1788	535738972	535805928	1fefbfe8	ticker.exe
  30184	   1492	535774252	535805928	1fefbfe8	minimum.exe
 350588	   2044	535453292	535805924	1fefbfe4	cxx_iostream.exe
 393313	   5872	535406724	535805909	1fefbfd5	fileio.exe
 289480	  12548	535503908	535805936	1fefbff0	pppd.exe
 131740	   2416	535671768	535805924	1fefbfe4	capture.exe
  77306	   1876	535726736	535805918	1fefbfde	nsecs.exe
 114932	   2164	535688824	535805920	1fefbfe0	paranoia.exe
 125904	   1812	535678216	535805932	1fefbfec	cdtest.exe
  62824	   1788	535741316	535805928	1fefbfe8	base_sp.exe
  63148	   1796	535740992	535805936	1fefbff0	unlimited.exe
  67820	   1724	535736384	535805928	1fefbfe8	hello.exe
 173288	   6484	535626144	535805916	1fefbfdc	loopback.exe

---

 c/src/lib/libbsp/arm/xilinx-zynq/make/custom/xilinx_zynq.inc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/c/src/lib/libbsp/arm/xilinx-zynq/make/custom/xilinx_zynq.inc b/c/src/lib/libbsp/arm/xilinx-zynq/make/custom/xilinx_zynq.inc
index 1cbe747..59c18f7 100644
--- a/c/src/lib/libbsp/arm/xilinx-zynq/make/custom/xilinx_zynq.inc
+++ b/c/src/lib/libbsp/arm/xilinx-zynq/make/custom/xilinx_zynq.inc
@@ -5,3 +5,6 @@ RTEMS_CPU = arm
 CPU_CFLAGS = -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -mtune=cortex-a9
 
 CFLAGS_OPTIMIZE_V ?= -O2 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections


