[bsp] Switch qemu-vexpress-gemini sample to picolibc

Before: text data bss dec hex filename 165330 2256 14256 181842 2c652 rtthread-vexpress.elf After: text data bss dec hex filename 156747 1200 14128 172075 2a02b rtthread-vexpress.elf Signed-off-by: Keith Packard <keithp@keithp.com>
RT-Thread · Apr 3, 2022 · 017f027 · 017f027
1 parent 25b929b
commit 017f027
Show file tree

Hide file tree

Showing 4 changed files with 27 additions and 1 deletion.
diff --git a/bsp/qemu-vexpress-gemini/.config b/bsp/qemu-vexpress-gemini/.config
@@ -26,10 +26,14 @@ CONFIG_IDLE_THREAD_STACK_SIZE=512
 #
 # kservice optimization
 #
-# CONFIG_RT_KSERVICE_USING_STDLIB is not set
+CONFIG_RT_KSERVICE_USING_STDLIB=y
+CONFIG_RT_KSERVICE_USING_STDLIB_MEMCPY=y
+CONFIG_RT_KSERVICE_USING_STDLIB_MEMSET=y
 # CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
 # CONFIG_RT_USING_TINY_FFS is not set
+CONFIG_RT_KSERVICE_USING_PRINTF=y
 # CONFIG_RT_PRINTF_LONGLONG is not set
+# CONFIG_RT_PRINTF_FLOAT is not set
 CONFIG_RT_DEBUG=y
 CONFIG_RT_DEBUG_COLOR=y
 # CONFIG_RT_DEBUG_INIT_CONFIG is not set

diff --git a/bsp/qemu-vexpress-gemini/rtconfig.h b/bsp/qemu-vexpress-gemini/rtconfig.h
@@ -20,6 +20,10 @@
 
 /* kservice optimization */
 
+#define RT_KSERVICE_USING_STDLIB
+#define RT_KSERVICE_USING_STDLIB_MEMCPY
+#define RT_KSERVICE_USING_STDLIB_MEMSET
+#define RT_KSERVICE_USING_PRINTF
 #define RT_DEBUG
 #define RT_DEBUG_COLOR
 

diff --git a/bsp/qemu-vexpress-gemini/rtconfig.py b/bsp/qemu-vexpress-gemini/rtconfig.py
@@ -4,6 +4,7 @@
 ARCH='arm'
 CPU='vexpress-a9'
 CROSS_TOOL='gcc'
+LIBC='picolibc'
 
 if os.getenv('RTT_CC'):
     CROSS_TOOL = os.getenv('RTT_CC')

diff --git a/bsp/qemu-vexpress-gemini/vexpress.lds b/bsp/qemu-vexpress-gemini/vexpress.lds
@@ -36,6 +36,23 @@ SECTIONS
     } =0
     __text_end = .;
 
+    . = ALIGN(8);
+    .tdata : {
+	*(.tdata)
+	*(.tdata.*)
+	*(.gnu.linkonce.td.*)
+    }
+
+    .tbss (NOLOAD) : {
+	*(.tbss .tbss.* .gnu.linkonce.tb.*)
+	*(.tcommon)
+    }
+
+    __tdata_source = ADDR(.tdata);
+    __tdata_size = SIZEOF(.tdata);
+    __tbss_size = SIZEOF(.tbss);
+    __tls_size = SIZEOF(.tdata) + SIZEOF(.tbss);
+
     __rodata_start = .;
     .rodata   : { *(.rodata) *(.rodata.*) }
     __rodata_end = .;