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Add picolib support to bsp/x86, default to newlib

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- add i686-atxhua-picolib-elf-gcc toolchain
    - add picolib option to bsp/x86
    - add necessary picolib require library
This commit is contained in:
atxhua
2026-05-25 09:51:06 +08:00
committed by Rbb666
parent 0b2e35ab93
commit 479acdb47e
9 changed files with 148 additions and 0 deletions
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.github/workflows/manual_dist.yml
+8
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@@ -36,6 +36,7 @@ on:
- "gcc"
- "sourcery-riscv32-esp32"
- "i686-x86-newlib"
- "i686-x86-picolib"
bsp_config:
description: 'Type a config you want mannual test in .config, like: CONFIG_RT_USING_DEBUG=y,CONFIG_RT_DEBUGING_COLOR=y,CONFIG_RT_DEBUGING_CONTEXT=y'
required: false
@@ -135,6 +136,13 @@ jobs:
echo "RTT_EXEC_PATH=/opt/i686-atxhua-newlib-elf-gcc/bin" >> $GITHUB_ENV
echo "RTT_CC_PREFIX=i686-atxhua-newlib-elf-" >> $GITHUB_ENV
- name: Install i686 X86 Picolib ToolChains
if: ${{ github.event.inputs.bsp_tool_chain == 'i686-x86-picolib' && success() }}
run: |
source tools/ci/toolchain.sh i686-atxhua-picolib-elf-gcc
echo "RTT_EXEC_PATH=/opt/i686-atxhua-picolib-elf-gcc/bin" >> $GITHUB_ENV
echo "RTT_CC_PREFIX=i686-atxhua-picolib-elf-" >> $GITHUB_ENV
- name: Bsp Scons Compile
if: ${{ success() }}
shell: bash
bsp/x86/.config
+14
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@@ -306,6 +306,7 @@ CONFIG_RT_SERIAL_RB_BUFSZ=64
# CONFIG_RT_USING_LCD is not set
# CONFIG_RT_USING_HWCRYPTO is not set
# CONFIG_RT_USING_WIFI is not set
# CONFIG_RT_USING_RPMSG is not set
# CONFIG_RT_USING_BLK is not set
# CONFIG_RT_USING_REGULATOR is not set
# CONFIG_RT_USING_POWER_SUPPLY is not set
@@ -944,6 +945,12 @@ CONFIG_RT_LIBC_TZ_DEFAULT_SEC=0
# CONFIG_PKG_USING_FT32F4_STD_DRIVER is not set
# CONFIG_PKG_USING_FT32F4_CMSIS_DRIVER is not set
# end of FT32 HAL & SDK Drivers
#
# NOVOSNS Drivers
#
# CONFIG_PKG_USING_NOVOSNS_SERIES_DRIVER is not set
# end of NOVOSNS Drivers
# end of HAL & SDK Drivers
#
@@ -1466,3 +1473,10 @@ CONFIG_RT_LIBC_TZ_DEFAULT_SEC=0
# end of RT-Thread online packages
CONFIG_IA32=y
#
# X86 Features
#
CONFIG_X86_BSP_USING_LIBC=y
# CONFIG_X86_BSP_USING_PICOLIBC_PORT is not set
# end of X86 Features
bsp/x86/Kconfig
+20
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@@ -15,3 +15,23 @@ config IA32
select RT_USING_COMPONENTS_INIT
select RT_USING_USER_MAIN
default y
menu "X86 Features"
choice
prompt "C Library type"
default X86_BSP_USING_LIBC
config X86_BSP_USING_LIBC
bool "Newlib"
help
Use the standard Newlib implementation.
config X86_BSP_USING_PICOLIBC_PORT
bool "Picolibc (tinystdio)"
select RT_USING_COMPONENTS_INIT
help
Use Picolibc with tinystdio for a smaller footprint.
endchoice
endmenu
bsp/x86/README.md
+55
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@@ -1,5 +1,59 @@
# RT-Thread for x86
## Intro
This x86 BSP support both newlib & picolib, with toolchain available
- **Newlib:** `i686-atxhua-newlib-elf-`
- **Picolibc:** `i686-atxhua-picolib-elf-`
## Install Toolchain
To install toolchain run the following command:
- **Newlib:** sudo ../../tools/ci/toolchain.sh i686-atxhua-newlib-elf-gcc
- **Picolibc:** sudo ../../tools/ci/toolchain.sh i686-atxhua-picolib-elf-gcc
## Configuration
Use `menuconfig` to select your preferred C library:
1. Run `scons --menuconfig`
2. Navigate to `X86 Features` -> `C Library type`
3. Select either `Newlib`(default) or `Picolibc`
## Building
After select the correct library in `menuconfig`, set the toolchain path and prefix:
### Newlib
```bash
export RTT_EXEC_PATH=/opt/i686-atxhua-newlib-elf-gcc/bin
export RTT_CC_PREFIX=i686-atxhua-newlib-elf-
scons
```
### Picolib
```bash
export RTT_EXEC_PATH=/opt/i686-atxhua-picolib-elf-gcc/bin
export RTT_CC_PREFIX=i686-atxhua-picolib-elf-
scons
```
## Result ELF
### Newlib
```
Memory region Used Size Region Size %age Used
i686-atxhua-newlib-elf-objcopy -O binary rtthread.elf rtthread.bin
i686-atxhua-newlib-elf-size rtthread.elf
text data bss dec hex filename
212900 3274 10844 227018 376ca rtthread.elf
scons: done building targets.
```
### Picolib
```
Memory region Used Size Region Size %age Used
i686-atxhua-picolib-elf-objcopy -O binary rtthread.elf rtthread.bin
i686-atxhua-picolib-elf-size rtthread.elf
text data bss dec hex filename
174122 2568 10528 187218 2db52 rtthread.elf
scons: done building targets.
```
这是一份基础的RT-Thread针对x86的版本、移植，主要是能够在qemu中执行。以下说明主要针对Linux的环境，如果是Windows环境，请使用Env工具，同时请自行处理生成iso的方法。
## 编译
@@ -8,6 +62,7 @@
* [i386-unknown-elf_for_x86_64-pc-linux-gnu_latest.tar.bz2](http://117.143.63.254:9012/www/rt-smart/i386-unknown-elf_for_x86_64-pc-linux-gnu_latest.tar.bz2)
* [ GCC 15.2.0 w/ Newlib 4.6.0.20260123: https://github.com/atxhua/i686-atxhua-newlib-elf/releases/download/15.2.0/i686-atxhua-newlib-elf-linux.tar.gz ](https://github.com/atxhua/i686-atxhua-newlib-elf/releases/download/15.2.0/i686-atxhua-newlib-elf-linux.tar.gz)
* [ GCC 15.2.0 w/ Picolib 1.8.11: https://github.com/atxhua/i686-atxhua-picolib-elf/releases/download/15.2.0/i686-atxhua-picolib-elf-linux.tar.gz ](https://github.com/atxhua/i686-atxhua-picolib-elf/releases/download/15.2.0/i686-atxhua-picolib-elf-linux.tar.gz)
下载后解压，然后配置RTT_EXEC_PATH & RTT_CC_PREFIX 变量
bsp/x86/picolib/SConscript
+14
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@@ -0,0 +1,14 @@
Import('RTT_ROOT')
Import('rtconfig')
from building import *
cwd = GetCurrentDir()
src = Glob('*.c')
CPPPATH = [cwd]
CPPFLAGS = '-specs=picolibc.specs'
group = DefineGroup('Picolib', src, depend = ['X86_BSP_USING_PICOLIBC_PORT'], CPPPATH = CPPPATH, CPPFLAGS = CPPFLAGS)
Return('group')
bsp/x86/picolib/picolib_stdio.c
+20
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@@ -0,0 +1,20 @@
#include <rtthread.h>
#include <stdio.h>
static int picolibc_putc(char c, FILE *file)
{
(void)file;
if (c == '\n')
{
rt_hw_console_output("\r");
}
rt_hw_console_output((const char *)&c);
return c;
}
static FILE __stdio_out = FDEV_SETUP_STREAM(picolibc_putc, NULL, NULL, _FDEV_SETUP_WRITE);
FILE *const stdout = &__stdio_out;
FILE *const stderr = &__stdio_out;
bsp/x86/rtconfig.h
+9
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@@ -351,6 +351,10 @@
/* FT32 HAL & SDK Drivers */
/* end of FT32 HAL & SDK Drivers */
/* NOVOSNS Drivers */
/* end of NOVOSNS Drivers */
/* end of HAL & SDK Drivers */
/* sensors drivers */
@@ -432,4 +436,9 @@
/* end of RT-Thread online packages */
#define IA32
/* X86 Features */
#define X86_BSP_USING_LIBC
/* end of X86 Features */
#endif
bsp/x86/rtconfig.py
+7
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@@ -1,5 +1,9 @@
import os
def check_config_key_enable(key):
if not os.path.isfile('.config'): return False
return (key + '=y') in open('.config').read()
# toolchains options
ARCH='ia32'
CPU=''
@@ -30,6 +34,9 @@ if PLATFORM == 'gcc':
OBJCPY = PREFIX + 'objcopy'
DEVICE = ' -mtune=generic'
if check_config_key_enable('CONFIG_X86_BSP_USING_PICOLIBC_PORT'):
DEVICE += ' -specs=picolibc.specs'
CFLAGS = DEVICE + ' -Wall'
AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T x86_ram.lds -nostartfiles'
tools/ci/toolchain.sh
+1
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@@ -10,6 +10,7 @@ declare -A download_urls=(
["riscv32-esp-elf-gcc"]="https://github.com/espressif/crosstool-NG/releases/download/esp-2022r1-RC1/riscv32-esp-elf-gcc11_2_0-esp-2022r1-RC1-linux-amd64.tar.xz"
["clang"]="https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm/releases/download/release-16.0.0/LLVMEmbeddedToolchainForArm-16.0.0-Linux-x86_64.tar.gz"
["i686-atxhua-newlib-elf-gcc"]="https://github.com/atxhua/i686-atxhua-newlib-elf/releases/download/15.2.0/i686-atxhua-newlib-elf-linux.tar.gz"
["i686-atxhua-picolib-elf-gcc"]="https://github.com/atxhua/i686-atxhua-picolib-elf/releases/download/15.2.0/i686-atxhua-picolib-elf-linux.tar.gz"
)
show_help() {