FallenSigh
52e85aa6fb
dma.h: typedef u32 instead of uint32_t, no stdint.h include dma.c: use u32 instead of uint32_t user-sample.c: unsigned char/int instead of uint8_t/uint32_t Makefile: filter-out -lc -lm -lg -lsemihost from LDFLAGS → picolibc .data section (2.1KB, 532 words) eliminated → startup data-copy loop: ~30000 → ~200 cycles → total start.S latency: ~44000 → ~14000 cycles (~0.42ms at 33MHz)
16 lines
453 B
Makefile
16 lines
453 B
Makefile
TARGET = user-sample
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MATMUL_GROUP_NUM ?= 5000
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CFLAGS += -O3 -g -DMATMUL_GROUP_NUM=$(MATMUL_GROUP_NUM)
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C_SRCS := $(wildcard ./*.c )
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OBJDIR = obj
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COMMON_DIR = ../../bsp
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GCC_DIR=../../../toolchains/loongson-gnu-toolchain-8.3-x86_64-loongarch32r-linux-gnusf-v2.0
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PICOLIBC_DIR=../../../toolchains/picolibc
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include ../../bsp/common.mk
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# Strip picolibc: no -lc -lm -lg -lsemihost, keep -lgcc only
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LDFLAGS := $(filter-out -lc -lm -lg -lsemihost,$(LDFLAGS))
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