[英]how to generate hex files from c code and assembly code RISCV
我有一些 C 代碼/匯編代碼,我想編譯它並為 RISCV 漿糊生成十六進制文件。 任何人都可以幫助我完成此步驟。 當前運行 hello 代碼
#include <stdio.h>
int main()
{
printf("Hello !\n");
return 0;
}
在使用 riscv32 編譯時使用命令 riscv32-unknown-elf-gcc hello.c
得到這樣的錯誤
RISCV/lib/gcc/riscv32-unknown-elf/7.1.1/../../../../riscv32-unknown-elf/bin/ld: cannot open linker script file riscv.ld: No such file or directory
collect2: error: ld returned 1 exit status
git存儲庫中有一個完美的示例,可用於回答您的問題。 由於我沒有您正在使用的工具鏈,因此我使用的是從 bootlin web 站點下載的工具鏈。
wget https://toolchains.bootlin.com/downloads/releases/toolchains/riscv32-ilp32d/tarballs/riscv32-ilp32d--glibc--bleeding-edge-2020.02-2.tar.bz2
mkdir -p /opt/bootlin
tar jxvf riscv32-ilp32d--glibc--bleeding-edge-2020.02-2.tar.bz2 -C /opt/bootlin
git clone git clone https://github.com/pulp-platform/boot-code
cd boot-code
編輯Makefile
,並調整以下行以反映您正在使用的工具鏈的位置:
PULP_CC = riscv32-unknown-elf-gcc
PULP_LD = riscv32-unknown-elf-gcc
使用 bootlin 工具鏈時,這將導致以下兩行:
PULP_CC = /opt/bootlin/riscv32-ilp32d--glibc--bleeding-edge-2020.02-2/bin/riscv32-buildroot-linux-gnu-gcc
PULP_LD = /opt/bootlin/riscv32-ilp32d--glibc--bleeding-edge-2020.02-2/bin/riscv32-buildroot-linux-gnu-gcc
相同的Makefile
,替換以下行 - 代碼不會像我認為的那樣編譯:
CFLAGS += -Os -g -fno-jump-tables -I$(CURDIR)/include
經過:
CFLAGS += -Os -g -fno-jump-tables -I$(CURDIR)/include -DMCHAN_CMD_ILE_BIT=21 -DMCHAN_CMD_ELE_BIT=20
您現在可以構建build/bootcode
可執行文件:
make
CC boot_code.c
In file included from /home/frant/mnt/git/boot-code/include/hal/chips/pulp/pulp.h:20,
from /home/frant/mnt/git/boot-code/include/hal/pulp.h:27,
from boot_code.c:18:
/home/frant/mnt/git/boot-code/include/hal/riscv/riscv_v5.h: In function ‘hal_cluster_id’:
/home/frant/mnt/git/boot-code/include/hal/riscv/riscv_v5.h:172:10: warning: implicit declaration of function ‘__builtin_pulp_ClusterId’ [-Wimplicit-function-declaration]
172 | return __builtin_pulp_ClusterId();
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/frant/mnt/git/boot-code/include/hal/chips/pulp/pulp.h:21,
from /home/frant/mnt/git/boot-code/include/hal/pulp.h:27,
from boot_code.c:18:
/home/frant/mnt/git/boot-code/include/hal/eu/eu_v3.h: In function ‘evt_read32’:
/home/frant/mnt/git/boot-code/include/hal/eu/eu_v3.h:43:11: warning: implicit declaration of function ‘__builtin_pulp_event_unit_read’ [-Wimplicit-function-declaration]
43 | value = __builtin_pulp_event_unit_read((int *)base, offset);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC crt0.S
LD /home/frant/mnt/git/boot-code/build/bootcode
./stim_utils.py \
--binary=/home/frant/mnt/git/boot-code/build/bootcode \
--stim-bin=rom.bin \
--area=0x1a000000:0x01000000
Created stimuli generator
Added binary: /home/frant/mnt/git/boot-code/build/bootcode
Added target area: [0x1a000000 -> 0x1b000000]
Handling section (base: 0x1a000000, size: 0x57c)
Bypassing section (base:make
CC boot_code.c
In file included from /home/frant/mnt/git/boot-code/include/hal/chips/pulp/pulp.h:20,
from /home/frant/mnt/git/boot-code/include/hal/pulp.h:27,
from boot_code.c:18:
/home/frant/mnt/git/boot-code/include/hal/riscv/riscv_v5.h: In function ‘hal_cluster_id’:
/home/frant/mnt/git/boot-code/include/hal/riscv/riscv_v5.h:172:10: warning: implicit declaration of function ‘__builtin_pulp_ClusterId’ [-Wimplicit-function-declaration]
172 | return __builtin_pulp_ClusterId();
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/frant/mnt/git/boot-code/include/hal/chips/pulp/pulp.h:21,
from /home/frant/mnt/git/boot-code/include/hal/pulp.h:27,
from boot_code.c:18:
/home/frant/mnt/git/boot-code/include/hal/eu/eu_v3.h: In function ‘evt_read32’:
/home/frant/mnt/git/boot-code/include/hal/eu/eu_v3.h:43:11: warning: implicit declaration of function ‘__builtin_pulp_event_unit_read’ [-Wimplicit-function-declaration]
43 | value = __builtin_pulp_event_unit_read((int *)base, offset);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CC crt0.S
LD /home/frant/mnt/git/boot-code/build/bootcode
./stim_utils.py \
--binary=/home/frant/mnt/git/boot-code/build/bootcode \
--stim-bin=rom.bin \
--area=0x1a000000:0x01000000
Created stimuli generator
Added binary: /home/frant/mnt/git/boot-code/build/bootcode
Added target area: [0x1a000000 -> 0x1b000000]
Handling section (base: 0x1a000000, size: 0x57c)
Bypassing section (base: 0x1c000000, size: 0x1928)
objcopy --srec-len 1 --output-target=srec /home/frant/mnt/git/boot-code/build/bootcode /home/frant/mnt/git/boot-code/build/bootcode.s19
./s19toboot.py /home/frant/mnt/git/boot-code/build/bootcode.s19 boot_code.cde pulp 0x1c000000, size: 0x1928)
objcopy --srec-len 1 --output-target=srec /home/frant/mnt/git/boot-code/build/bootcode /home/frant/mnt/git/boot-code/build/bootcode.s19
./s19toboot.py /home/frant/mnt/git/boot-code/build/bootcode.s19 boot_code.cde pulp
並將其轉換為 Intel Hex 格式:
/opt/bootlin/riscv32-ilp32d--glibc--bleeding-edge-2020.02-2/bin/riscv32-buildroot-linux-gnu-objcopy --output-target=ihex build/bootcode bootcode.ihex
cat bootcode.ihex
:020000041A00E0
:100000006F0080086F0040086F0000086F00C00795
:100010006F0080076F0040076F0000076F00C00689
../...
:081920000000000000000000BF
:040000051A000000DD
:00000001FF
現在您已經有了一個我認為是您的目標的紙漿平台的工作示例,您應該能夠根據您的需求對其進行調整。
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