From 857fdad220657d0531d7663226b978890f3a5c82 Mon Sep 17 00:00:00 2001 From: hujun5 Date: Sun, 26 Jan 2025 19:12:39 +0800 Subject: [PATCH] boards/arm/qemu/qemu-armv7a: add demo for gdbstub Gdbstub support =========== The Qemu version must be above 9.2 to support two serial ports. One window: ./tools/configure.sh qemu-armv7a:gdbstub; make -j25 qemu-system-arm -cpu cortex-a7 -nographic -machine virt,virtualization=off,gic-version=2 -net none -kernel ./nuttx -serial mon:stdio -serial pty char device redirected to /dev/pts/26 (label serial1) nx_start: Entry uart_register: Registering /dev/console uart_register: Registering /dev/ttyS0 Another window: gdb-multiarch nuttx -ex "target remot /dev/pts/26" GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from nuttx... Remote debugging using /dev/pts/26 gdb_get_registers (state=0x402052f8) at gdbstub/lib_gdbstub.c:1020 1020 reg = state->running_regs; (gdb) c Signed-off-by: hujun5 --- .../arm/qemu/boards/qemu-armv7a/index.rst | 38 ++++++++++ .../qemu-armv7a/configs/gdbstub/defconfig | 76 +++++++++++++++++++ 2 files changed, 114 insertions(+) create mode 100644 boards/arm/qemu/qemu-armv7a/configs/gdbstub/defconfig diff --git a/Documentation/platforms/arm/qemu/boards/qemu-armv7a/index.rst b/Documentation/platforms/arm/qemu/boards/qemu-armv7a/index.rst index 3c5073abfdc..97340610a6c 100644 --- a/Documentation/platforms/arm/qemu/boards/qemu-armv7a/index.rst +++ b/Documentation/platforms/arm/qemu/boards/qemu-armv7a/index.rst @@ -211,3 +211,41 @@ The command that starts QEMU and enables the QEMU EDU device looks like this:: -machine virt,highmem=off,virtualization=off,gic-version=2 \ -chardev stdio,id=con,mux=on -serial chardev:con -mon chardev=con,mode=readline \ -kernel nuttx -device edu + + +Gdbstub support +=============== +The Qemu version must be above 9.2 to support two serial ports. + +One window:: + + $ ./tools/configure.sh qemu-armv7a:gdbstub; make -j25 + qemu-system-arm -cpu cortex-a7 -nographic -machine virt,virtualization=off,gic-version=2 -net none -kernel ./nuttx -serial mon:stdio -serial pty + char device redirected to /dev/pts/26 (label serial1) + nx_start: Entry + uart_register: Registering /dev/console + uart_register: Registering /dev/ttyS0 + +Another window:: + + $ gdb-multiarch nuttx -ex "target remote /dev/pts/26" + GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git + Copyright (C) 2024 Free Software Foundation, Inc. + License GPLv3+: GNU GPL version 3 or later + This is free software: you are free to change and redistribute it. + There is NO WARRANTY, to the extent permitted by law. + Type "show copying" and "show warranty" for details. + This GDB was configured as "x86_64-linux-gnu". + Type "show configuration" for configuration details. + For bug reporting instructions, please see: + . + Find the GDB manual and other documentation resources online at: + . + + For help, type "help". + Type "apropos word" to search for commands related to "word"... + Reading symbols from nuttx... + Remote debugging using /dev/pts/26 + gdb_get_registers (state=0x402052f8) at gdbstub/lib_gdbstub.c:1020 + 1020 reg = state->running_regs; + (gdb) c \ No newline at end of file diff --git a/boards/arm/qemu/qemu-armv7a/configs/gdbstub/defconfig b/boards/arm/qemu/qemu-armv7a/configs/gdbstub/defconfig new file mode 100644 index 00000000000..56dbea09100 --- /dev/null +++ b/boards/arm/qemu/qemu-armv7a/configs/gdbstub/defconfig @@ -0,0 +1,76 @@ +# +# This file is autogenerated: PLEASE DO NOT EDIT IT. +# +# You can use "make menuconfig" to make any modifications to the installed .config file. +# You can then do "make savedefconfig" to generate a new defconfig file that includes your +# modifications. +# +CONFIG_ALARM_ARCH=y +CONFIG_ARCH="arm" +CONFIG_ARCH_BOARD="qemu-armv7a" +CONFIG_ARCH_BOARD_QEMU_ARMV7A=y +CONFIG_ARCH_CHIP="qemu" +CONFIG_ARCH_CHIP_QEMU_ARM=y +CONFIG_ARCH_CHIP_QEMU_CORTEXA7=y +CONFIG_ARCH_INTERRUPTSTACK=2048 +CONFIG_ARCH_LOWVECTORS=y +CONFIG_BOARD_MEMORY_RANGE="{0x40200000,0x48000000,0x6}" +CONFIG_BUILTIN=y +CONFIG_DEBUG_ASSERTIONS=y +CONFIG_DEBUG_FEATURES=y +CONFIG_DEBUG_FULLOPT=y +CONFIG_DEBUG_SCHED=y +CONFIG_DEBUG_SCHED_ERROR=y +CONFIG_DEBUG_SCHED_INFO=y +CONFIG_DEBUG_SCHED_WARN=y +CONFIG_DEBUG_SYMBOLS=y +CONFIG_DEFAULT_TASK_STACKSIZE=4096 +CONFIG_EXAMPLES_HELLO=y +CONFIG_EXPERIMENTAL=y +CONFIG_FLASH_SIZE=127926272 +CONFIG_FLASH_START=0x00600000 +CONFIG_FLASH_VSTART=0x00600000 +CONFIG_FS_PROCFS=y +CONFIG_FS_ROMFS=y +CONFIG_HAVE_CXX=y +CONFIG_HAVE_CXXINITIALIZE=y +CONFIG_IDLETHREAD_STACKSIZE=4096 +CONFIG_INIT_ENTRYPOINT="nsh_main" +CONFIG_INTELHEX_BINARY=y +CONFIG_LIBC_EXECFUNCS=y +CONFIG_LIB_GDBSTUB=y +CONFIG_NSH_ARCHINIT=y +CONFIG_NSH_BUILTIN_APPS=y +CONFIG_NSH_FILEIOSIZE=512 +CONFIG_NSH_READLINE=y +CONFIG_ONESHOT=y +CONFIG_PREALLOC_TIMERS=4 +CONFIG_RAMLOG=y +CONFIG_RAM_SIZE=132120576 +CONFIG_RAM_START=0x40200000 +CONFIG_RAM_VSTART=0x40200000 +CONFIG_RAW_BINARY=y +CONFIG_READLINE_CMD_HISTORY=y +CONFIG_RR_INTERVAL=200 +CONFIG_SCHED_HPWORK=y +CONFIG_SCHED_HPWORKPRIORITY=192 +CONFIG_SERIAL_GDBSTUB=y +CONFIG_SERIAL_GDBSTUB_AUTO_ATTACH=y +CONFIG_STACK_COLORATION=y +CONFIG_START_DAY=25 +CONFIG_START_MONTH=4 +CONFIG_START_YEAR=2023 +CONFIG_SYMTAB_ORDEREDBYNAME=y +CONFIG_SYSTEM_NSH=y +CONFIG_SYSTEM_SYSTEM=y +CONFIG_TESTING_GETPRIME=y +CONFIG_TESTING_OSTEST=y +CONFIG_UART0_BASE=0x9000000 +CONFIG_UART0_IRQ=33 +CONFIG_UART0_PL011=y +CONFIG_UART0_SERIAL_CONSOLE=y +CONFIG_UART1_BASE=0x9040000 +CONFIG_UART1_IRQ=40 +CONFIG_UART1_PL011=y +CONFIG_UART_PL011=y +CONFIG_USEC_PER_TICK=1000