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Rework host/target interface to use ecall and proper syscalls instead of CSRs

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This commit is contained in:
Toby Jaffey 2025-12-08 02:44:38 +00:00
parent a305fce466
commit 751f068486
26 changed files with 360 additions and 364 deletions
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2
apps/hello-asm/Makefile
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@ -10,7 +10,7 @@ CFLAGS+=-g -Os -march=rv32ima_zicsr -mabi=ilp32 -static
LDFLAGS:= -T ../linker.ld -nostdlib -Wl,--gc-sections
LIBS:= #-lgcc # needed for softfp
SRCS=hello-asm.s
SRCS=hello-asm.S
all:
${PREFIX}gcc -o ${PROJECT}.elf ${CFLAGS} ${LDFLAGS} ${SRCS} ${LIBS}

9
apps/hello-asm/hello-asm.s
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@ -1,9 +0,0 @@
.section .initial_jump , "ax", %progbits
.global _start
_start:
la a5, str
csrrw zero,0x13b,a5 # println
csrwi 0x138,0 # halt
str:
.ascii "Hi"