From 44866906b4dd90cced99d2794272c5ed0420774f Mon Sep 17 00:00:00 2001 From: Thorsten Knoll Date: Sun, 17 Jan 2021 20:30:08 +0100 Subject: [PATCH] first tiny mem-mapped example is working --- c_project/Makefile | 140 +++ c_project/crt.S | 97 ++ c_project/crt.o | Bin 0 -> 548 bytes c_project/hal-vexriscv.c | 60 ++ c_project/hal-vexriscv.o | Bin 0 -> 9756 bytes c_project/hal.c | 21 + c_project/hal.h | 18 + c_project/hal.o | Bin 0 -> 13444 bytes c_project/libpqvexriscvsimbsp.a | Bin 0 -> 3644 bytes c_project/main | Bin 0 -> 46028 bytes c_project/main.bin | Bin 0 -> 7048 bytes c_project/main.c | 29 + c_project/main.hex | 446 ++++++++ c_project/main.o | Bin 0 -> 6256 bytes c_project/memcmp.c | 16 + c_project/memcmp.o | Bin 0 -> 4932 bytes c_project/memcpy.c | 61 ++ c_project/memcpy.o | Bin 0 -> 17800 bytes c_project/memset.c | 64 ++ c_project/memset.o | Bin 0 -> 12844 bytes c_project/nonvolatile.ld | 141 +++ c_project/pqvexriscvsim.ld | 14 + c_project/printf.c | 987 ++++++++++++++++++ c_project/printf.h | 121 +++ c_project/printf.o | Bin 0 -> 122220 bytes c_project/vexriscv/init.c | 13 + c_project/vexriscv/nonvolatile.ld | 141 +++ c_project/vexriscv/pqvexriscvsim.ld | 14 + c_project/vexriscv/pqvexriscvsim_init.o | Bin 0 -> 880 bytes c_project/vexriscv/pqvexriscvsim_start.o | Bin 0 -> 2360 bytes c_project/vexriscv/start.S | 164 +++ c_project/vexriscv/vexriscv.mk | 45 + c_project/vexriscv/weak_under_alias.h | 7 + vexriscv/src/main/scala/mupq/MyMem.scala | 21 +- vexriscv/src/main/scala/mupq/PQVexRiscv.scala | 2 +- 35 files changed, 2615 insertions(+), 7 deletions(-) create mode 100644 c_project/Makefile create mode 100644 c_project/crt.S create mode 100644 c_project/crt.o create mode 100644 c_project/hal-vexriscv.c create mode 100644 c_project/hal-vexriscv.o create mode 100644 c_project/hal.c create mode 100644 c_project/hal.h create mode 100644 c_project/hal.o create mode 100644 c_project/libpqvexriscvsimbsp.a create mode 100755 c_project/main create mode 100755 c_project/main.bin create mode 100644 c_project/main.c create mode 100644 c_project/main.hex create mode 100644 c_project/main.o create mode 100644 c_project/memcmp.c create mode 100644 c_project/memcmp.o create mode 100644 c_project/memcpy.c create mode 100644 c_project/memcpy.o create mode 100644 c_project/memset.c create mode 100644 c_project/memset.o create mode 100644 c_project/nonvolatile.ld create mode 100644 c_project/pqvexriscvsim.ld create mode 100644 c_project/printf.c create mode 100644 c_project/printf.h create mode 100644 c_project/printf.o create mode 100644 c_project/vexriscv/init.c create mode 100644 c_project/vexriscv/nonvolatile.ld create mode 100644 c_project/vexriscv/pqvexriscvsim.ld create mode 100644 c_project/vexriscv/pqvexriscvsim_init.o create mode 100644 c_project/vexriscv/pqvexriscvsim_start.o create mode 100644 c_project/vexriscv/start.S create mode 100644 c_project/vexriscv/vexriscv.mk create mode 100644 c_project/vexriscv/weak_under_alias.h diff --git a/c_project/Makefile b/c_project/Makefile new file mode 100644 index 0000000..2ca229c --- /dev/null +++ b/c_project/Makefile @@ -0,0 +1,140 @@ +# Color definitions ------------------------------- + +NO_COLOR="\033[0m" +RED="\033[38;5;009m" +GREEN="\033[38;5;010m" +YELLOW="\033[38;5;011m" +ORANGE="\033[38;5;214m" +LIGHTPURPLE="\033[38;5;177m" +PURPLE="\033[38;5;135m" +CYAN="\033[38;5;014m" +LIGHTBLUE="\033[38;5;39m" +BLUE="\033[38;5;75m" +DARKBLUE="\033[38;5;33m" +LIGHTGRAY="\033[38;5;252m" +DARKGRAY="\033[38;5;242m" +BRIGHTRED="\033[91m" +BOLD="\033[1m" + +# PATHS (adapt to your system)---------------------- + +PATH_RISCV=/opt/riscv/ +PATH_RISC_BIN=$(PATH_RISCV)bin/ +PATH_VERILATOR_BIN?=/usr/local/bin/verilator +PREFIX?=$(PATH_RISC_BIN)riscv64-unknown-elf + +# TOOLS -------------------------------------------- + +AR?=$(PREFIX)-ar +GCC?=$(PREFIX)-gcc +CLANG=clang +GDB?=$(PREFIX)-gdb +OBJDUMP?=$(PREFIX)-objdump +OBJCOPY?=$(PREFIX)-objcopy +RISCVPATH=$(PATH_RISCV)riscv64-unknown-elf +OPENOCD?=$(PATH_RISC_BIN)openocd +ECHO?=echo + +# GCC FLAGS --------------------------------------- + +CC=$(GCC) + +GCC_CFLAGS_COMMON := -g \ + -O3 \ + -fno-builtin-printf \ + -Wno-unused-parameter \ + -Wall -Wextra -Wredundant-decls \ + -Wshadow -Wno-unused-function \ + -fno-common \ + -I$(RISCVPATH)/include + +GCC_CFLAGS_MURAX=-fstrict-volatile-bitfields --specs=nosys.specs + +RISCV_ARCH?=rv32im +RISCV_ABI?=ilp32 +RISCV_CMODEL?=medany +RISCV_ARCHFLAGS +=-march=$(RISCV_ARCH) +RISCV_ARCHFLAGS +=-mabi=$(RISCV_ABI) +RISCV_ARCHFLAGS +=-mcmodel=$(RISCV_CMODEL) +GCC_RISCV_ARCHFLAGS=$(RISCV_ARCHFLAGS) + +CFLAGS += $(GCC_CFLAGS_COMMON) \ + $(GCC_CFLAGS_MURAX) \ + $(GCC_RISCV_ARCHFLAGS) + +# Linker flags -------------------------------------- + +PLATFORM ?= pqvexriscvsim + +LDSCRIPT = $(PLATFORM).ld +LDFLAGS = -L$(RISCVPATH)/lib/rv32imac/ilp32 +LDFLAGS += $(GCC_RISCV_ARCHFLAGS) +LDFLAGS += --specs=nosys.specs +LDFLAGS += -Wl,-T$(LDSCRIPT) +LDFLAGS += -nostartfiles -ffreestanding -Wl,--gc-sections +LDFLAGS += -L. +LDFLAGS += -Wl,--start-group -l$(PLATFORM)bsp -lc -Wl,--end-group + +# Object files -------------------------------------- + +SDK_ASM_SRCS := $(wildcard *.S) +SDK_C_SRCS := $(wildcard *.c) +SDK_C_OBJS := $(SDK_C_SRCS:.c=.o) +SDK_ASM_OBJS := $(SDK_ASM_SRCS:.S=.o) +SDK_OBJS := $(SDK_C_OBJS) $(SDK_ASM_OBJS) + +# Target all ---------------------------------------- + +.PHONY: all +all: main.hex main.bin + +# LIBWRAP + +include vexriscv/vexriscv.mk + +# Targets -------------------------------------------- + +main.bin: main + @$(ECHO) $(PURPLE)"obj "$@""$(LIGHTGRAY) + $(OBJCOPY) -O binary $< $@ + +main.hex: main + @$(ECHO) $(PURPLE)"obj "$@""$(LIGHTGRAY) + $(OBJCOPY) -O ihex $< $@ + +main: $(LIBWRAP) $(SDK_OBJS) $(LDSCRIPT) + @$(ECHO) $(LIGHTPURPLE)"building "$@""$(LIGHTGRAY) + $(GCC) $(GCC_RISCV_ARCHFLAGS) $(GCC_CFLAGS_COMMON) $(SDK_OBJS) -o $@ $(LDFLAGS) + +%.o: %.S + @$(ECHO) $(ORANGE)"building "$@" (.S)"$(LIGHTGRAY) + $(CC) $(CFLAGS) -c -o $@ $^ + +%.o: %.c + @$(ECHO) $(ORANGE)"building "$@" (.c)"$(LIGHTGRAY) + $(CC) $(CFLAGS) -c -o $@ $^ + +.PHONY: clean +clean: + @$(ECHO) $(RED)"cleaning..."$(LIGHTGRAY) + rm -f main main.bin main.hex $(SDK_OBJS) $(LIBWRAP_OBJS) $(LIBWRAP) + +help: + @$(ECHO) $(RED)"Compile & Simulate"$(LIGHTGRAY) + @$(ECHO) $(LIGHTGRAY)"1. "$(CYAN)"make"$(LIGHTGRAY) + @$(ECHO) $(LIGHTGRAY)"2. open 3 terminals"$(LIGHTGRAY) + @$(ECHO) $(LIGHTGRAY)"3. Terminal 2: "$(CYAN)"make startsim"$(LIGHTGRAY) + @$(ECHO) $(LIGHTGRAY)"4. Terminal 3: "$(CYAN)"make openocd"$(LIGHTGRAY) + @$(ECHO) $(LIGHTGRAY)"5. Terminal 1: "$(CYAN)"make flash"$(LIGHTGRAY) + +# Targets for starting simulation, openocd and gdb ---------------------------- + +# startsim: +# cd ../Building_Tools/pqriscv-vexriscv/ ; sbt "runMain mupq.PQVexRiscvSim --ram 256,128" + +# openocd: +# cd ../Building_Tools/pqriscv-vexriscv/ ; /opt/verilator/bin/openocd --file pqvexriscvsim.cfg + +#flash: +# /opt/riscv/bin/riscv64-unknown-elf-gdb -ex 'set remotetimeout 15' -ex 'target remote :3333' -ex 'load' -ex 'break main' -ex 'continue' main + diff --git a/c_project/crt.S b/c_project/crt.S new file mode 100644 index 0000000..adfc5ab --- /dev/null +++ b/c_project/crt.S @@ -0,0 +1,97 @@ +# .global crtStart +# .global main +# .global irqCallback + +# crtStart: +# j crtInit +# nop +# nop +# nop +# nop +# nop +# nop +# nop + +# .global trap_entry +# trap_entry: +# sw x1, - 1*4(sp) +# sw x5, - 2*4(sp) +# sw x6, - 3*4(sp) +# sw x7, - 4*4(sp) +# sw x10, - 5*4(sp) +# sw x11, - 6*4(sp) +# sw x12, - 7*4(sp) +# sw x13, - 8*4(sp) +# sw x14, - 9*4(sp) +# sw x15, -10*4(sp) +# sw x16, -11*4(sp) +# sw x17, -12*4(sp) +# sw x28, -13*4(sp) +# sw x29, -14*4(sp) +# sw x30, -15*4(sp) +# sw x31, -16*4(sp) +# addi sp,sp,-16*4 +# call irqCallback +# lw x1 , 15*4(sp) +# lw x5, 14*4(sp) +# lw x6, 13*4(sp) +# lw x7, 12*4(sp) +# lw x10, 11*4(sp) +# lw x11, 10*4(sp) +# lw x12, 9*4(sp) +# lw x13, 8*4(sp) +# lw x14, 7*4(sp) +# lw x15, 6*4(sp) +# lw x16, 5*4(sp) +# lw x17, 4*4(sp) +# lw x28, 3*4(sp) +# lw x29, 2*4(sp) +# lw x30, 1*4(sp) +# lw x31, 0*4(sp) +# addi sp,sp,16*4 +# mret +# .text + + +# crtInit: +# .option push +# .option norelax +# la gp, __global_pointer$ +# .option pop +# la sp, _stack_start + +# bss_init: +# la a0, _bss_start +# la a1, _bss_end +# bss_loop: +# beq a0,a1,bss_done +# sw zero,0(a0) +# add a0,a0,4 +# j bss_loop +# bss_done: + +# ctors_init: +# la a0, _ctors_start +# addi sp,sp,-4 +# ctors_loop: +# la a1, _ctors_end +# beq a0,a1,ctors_done +# lw a3,0(a0) +# add a0,a0,4 +# sw a0,0(sp) +# jalr a3 +# lw a0,0(sp) +# j ctors_loop +# ctors_done: +# addi sp,sp,4 + + +# li a0, 0x880 //880 enable timer + external interrupts +# csrw mie,a0 +# li a0, 0x1808 //1808 enable interrupts +# csrw mstatus,a0 + +# call main +# infinitLoop: +# j infinitLoop + diff --git a/c_project/crt.o b/c_project/crt.o new file mode 100644 index 0000000000000000000000000000000000000000..7838fdd6fe1d8c0448dadf211861055626f0044e GIT binary patch literal 548 zcmb<-^>JflWMqH=MuyJ}2p$8&6R3mOxB_@W1~!? z0)zNmAOY2YgJMQ8oq>UwfeA$=Gf)H>Ff*_Kxq8Kwxh087K)R#|LTA8OC8-r940C60$VOJT6v(#&DS!f)Isjv4BnSWi literal 0 HcmV?d00001 diff --git a/c_project/hal-vexriscv.c b/c_project/hal-vexriscv.c new file mode 100644 index 0000000..29fa8e5 --- /dev/null +++ b/c_project/hal-vexriscv.c @@ -0,0 +1,60 @@ +#include "hal.h" +#include + +/* Murax UART */ + +typedef struct { + volatile uint32_t DATA; + volatile uint32_t STATUS; + volatile uint32_t CLOCK_DIVIDER; + volatile uint32_t FRAME_CONFIG; +} Uart_Reg; + +enum UartParity { NONE = 0, EVEN = 1, ODD = 2 }; +enum UartStop { ONE = 0, TWO = 1 }; + +typedef struct { + uint32_t dataLength; + enum UartParity parity; + enum UartStop stop; + uint32_t clockDivider; +} Uart_Config; + +static uint32_t uart_writeAvailability(Uart_Reg* reg) +{ + return (reg->STATUS >> 16) & 0xFF; +} + +static void uart_write(Uart_Reg* reg, uint32_t data) +{ + while (uart_writeAvailability(reg) == 0) + ; + reg->DATA = data; +} + +#define UART ((Uart_Reg*)(0xF0010000)) + +void hal_send(const uint8_t* in, const size_t len) { + for (size_t i = 0; i < len; i++) { + uart_write(UART, in[i]); + } +} + +void hal_send_str(const char* in) +{ + const char* cur = in; + while(*cur) { + uart_write(UART, *cur); + cur += 1; + } +} + +__attribute__((naked)) uint64_t hal_get_time(void) +{ +#define LE "\n\t" + asm volatile (LE"csrr a1, mcycleh" + LE"csrr a0, mcycle" + LE"csrr a2, mcycleh" + LE"bne a1, a2, hal_get_time" + LE"ret"); +} diff --git a/c_project/hal-vexriscv.o b/c_project/hal-vexriscv.o new file mode 100644 index 0000000000000000000000000000000000000000..9ecd27908eb6f0021440ca78924eac0aabaea5bc GIT binary patch literal 9756 zcmb_hdyHIF9X@C8%;U3} zUvlsHzVH0b?>z1~=bk%r+r-qQlu}re;w4dMLfp`!b4FCMS#*o_B6oMRX}I~@Vrz?h z@x)|Qoaoyv9(bljKJfC(9cS)qc`ccEMs!8jiZh*Ger@h{A?TC4tGP+}zlkq>&U~s_ z`M=aFPFH)yH>$okedcpNQrewOLPS&>BC2_-bhDPsM2f+IRgBeL+{t-uAAT*M3&}YT4NwN9m^XL@ah$%)|5W)(Nlu;@BmzZLvM*OvD#V zqQ;>e6W}7Hv~O#4YVw6;0LMq_w@DRKD*8>w%@o-Wok*8R}<28?S;x_My^1I41k zYqj+^p>3;1Tmk)RJ6jH_Xoq6g#;!qC?NKp^k{#6d$%E^y9;eO_t2@v=cB6AyaK!40 zVKh4NfY&Um1!dNzWWDu?7@M}vEsaqJbw;Y&EwHC6frf=9#dQ`(#7pwJM=Y~xv-kqm zvwYEVo4#eiCNU5OYZ13H_{LCJVT7a%rPuk?Yr4@wo4#428ug7Rpl7k(+-&)`J58e! 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Just put everything on the UART console. + (void)fd; + hal_send(ptr, len); +} + diff --git a/c_project/hal.h b/c_project/hal.h new file mode 100644 index 0000000..217bb5b --- /dev/null +++ b/c_project/hal.h @@ -0,0 +1,18 @@ +#ifndef VECRISCV_HAL_H_ +#define VECRISCV_HAL_H_ + +#include +#include +#include + +#define printf printf_ + +void hal_send(const uint8_t* in, const size_t len); +void hal_send_str(const char* in); + +int printf_(const char* format, ...); + +void _putchar(char c); +void _write(int fd, const void* ptr, size_t len); + +#endif /* VECRISCV_HAL_H_ */ diff --git a/c_project/hal.o b/c_project/hal.o new file mode 100644 index 0000000000000000000000000000000000000000..a9f3a9e0e50a0162acabfae6b8c3d551da8c2fbb GIT binary patch literal 13444 zcmbta3y@q@nLhV+chZxY^gNSHo=lj@Opwf@=RFW0B$+^#K>`U`B++YkPtQ!7evI8c znIuFB?}sQLAP+%>1Vu%SlG;@Sky>=!t*l^~-NhA3c12y0t;K>}%i5Ig_nrToo|7zF zTf2Lz?!DjlpZ|R4KhOKQi#QB!n*Fr;-x#lG@e(pkcGtFy8LX2Ed*E1k^bl-Ryi`*NUUPP 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z^4su4g^b2c=budS!SCGK&KaSKF5)h@k(}A|o?6DxvRbP@iY6Js!sCW-bUQNwJ%ay^+wKzU3C>E5N%f1&F;1j)V!Y8R{EwY zt0tpmuWo%RtZi%Uz32QZ;i@HDmPBZ4^o91=Qo58jzB7ib$<01yFCe`CY~D0eHUMHKXrELwQlnH ztV`$~0q?g?XS2hn{(pRbmj2`X&~!K8dnNiSo$2`K^S~wYZyV3)x|Cku-_UgP&9?^s z^42?UUV^taLhf9 +#include "hal.h" + +typedef struct { + volatile uint32_t state; +} My_Mem; + +#define MY_MEM ((My_Mem*)(0xF0030000)) + +int main(void) +{ + printf("HELLO WORLD\n"); + + uint32_t state = 10000; + uint32_t state_return; + + while (1) + { + printf("State in : %i\n", state); + + MY_MEM->state = state; + state_return = MY_MEM->state; + + state = state + 1; + + printf("State out: %i\n", state_return); + } + return 0; +} diff --git a/c_project/main.hex b/c_project/main.hex new file mode 100644 index 0000000..fcb07ac --- /dev/null +++ b/c_project/main.hex @@ -0,0 +1,446 @@ +:0200000480007A +:10000000130000001300000013000000971104000B +:100010009381C1C1170106001301C1FE171500002D +:1000200013054574970504009385C5FD1706040064 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All rights reserved. +** Distributed under the terms of the NewOS License. +*/ +/* + * Copyright (c) 2008 Travis Geiselbrecht + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include +#include + +typedef long word; +#define lsize sizeof(word) +#define lmask (lsize - 1) +void *memcpy(void *dest, const void *src, size_t count) +{ + char *d = (char *)dest; + const char *s = (const char *)src; + int len; + if(count == 0 || dest == src) + return dest; + if(((long)d | (long)s) & lmask) { + // src and/or dest do not align on word boundary + if((((long)d ^ (long)s) & lmask) || (count < lsize)) + len = count; // copy the rest of the buffer with the byte mover + else + len = lsize - ((long)d & lmask); // move the ptrs up to a word boundary + count -= len; + for(; len > 0; len--) + *d++ = *s++; + } + for(len = count / lsize; len > 0; len--) { + *(word *)d = *(word *)s; + d += lsize; + s += lsize; + } + for(len = count & lmask; len > 0; len--) + *d++ = *s++; + return dest; +} diff --git a/c_project/memcpy.o b/c_project/memcpy.o new file mode 100644 index 0000000000000000000000000000000000000000..1611f637651adb5a48c81432fa4331c8b0b05194 GIT binary patch literal 17800 zcmchedw5(`xyIL?*-0jsPSU1rS_(96+Gz!vdvoDpORrR;AeYJ!beK#g>Db9k%p^?< zmDW?BC@5&r0-_*PDT=6EyrOc`dcgx85ERkY14mT!fTDo<960a0zHd!dBj@4x&sop2 z_x`=_`u4Xj`%i1m*=Zsf?MkN@_aoW~rHNW|?$Nc~!dVuBtnR?lOB` z>Ne?1Dyr^SuY7ey)t-u0lm7F8sy!3SO?~-yU+vg+0Na(O{_G~xQU2n}`eKLKQ&DF2 zTs+I{`tDy|-Lt#FbX5Fhl@Uj`&Y0!s+sV{cf_6yG+{A+y_Ud))MPPykrTYqVVf&aJ9R2mc7F^6_KYGfJ? 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All rights reserved. +** Copyright 2001, Travis Geiselbrecht. All rights reserved. +** Distributed under the terms of the NewOS License. +*/ +/* + * Copyright (c) 2008 Travis Geiselbrecht + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include +#include + +// void * +// memset(void *s, int c, size_t count) +// { +// char *xs = (char *) s; +// // size_t len = (-(size_t)s) & (sizeof(size_t)-1); +// // int cc = c & 0xff; +// // if ( count > len ) { +// // count -= len; +// // cc |= cc << 8; +// // cc |= cc << 16; +// // // write to non-aligned memory byte-wise +// // for ( ; len > 0; len-- ) +// // *xs++ = c; +// // // write to aligned memory dword-wise +// // for ( len = count/sizeof(size_t); len > 0; len-- ) { +// // *((size_t *)xs) = cc; +// // xs += sizeof(size_t); +// // } +// // count &= sizeof(size_t)-1; +// // } +// // write remaining bytes +// for ( ; count > 0; count-- ) +// *xs++ = (char) c; +// return s; +// } + +void * +memset (void *dest, int val, size_t len) +{ + unsigned char *ptr = dest; + while (len-- > 0) + *ptr++ = (unsigned char) val; + return dest; +} \ No newline at end of file diff --git a/c_project/memset.o b/c_project/memset.o new file mode 100644 index 0000000000000000000000000000000000000000..3ec3a822f8dcf1837512f73ad84de95650ec0e4f GIT binary patch literal 12844 zcmbVS3vgW3c|P~ZI7bb|OjYBZa&1!WeZL|+nyRu|3 z!Mp+vgg^|KkOT-e#gvdVflQl19t1i=0xijqWYUlpQaY0al4&TDM?)I=edj-Cb>w6w zZO_cT_xt|ypYQzVc^|vi?ikqVd7iS#Q*Wyorqt7|lGCLx>(wH)P&IhoyG?7ZQ%%kD zRYOpr((y`l`lv0h1fiBwIt|@-)WVDo(5u-2**^=t7{2#l|gSc zOUDgaKvHAKa+114IIV)d>Z2&WK-C7lxW*fBdIX1Vg{f~%uql4JZ-Nibu3}+nNw8TH zQ{fg(OoiuYVk+FKNuAWbO_K#ewrjFP$PP_T5wcU0Mpeh!;$Co3yikte;<>~ohD)kQ z4$Y@uuzN0BpgduFHNy;x&xiF|xaoGCDx!CI!C?FwWzlp!u@N1rWGhX>hO3@Oj%nD) zO7_Jq=rHQVe}EGYBU~H&D@eT_r+9Exd=5rW+H>`MVnYs!JVa8kY46eC@8cI^Iw!($ z6+Bh1ofF}N3Z9lhO@vb__=?6RlCM^cqOj@WuW6D`1<@;5rygRXLK3U#m~=W zPna(L){5^|DAg$Oy}05JAZvuYG;cLl(Rv}@uG$2$F%eDo^R{`qiI9yn*Cp{RL!k%T|)r2+RBNwJ2XFtl-B#hfQaJunEy@7gqEaJ&U|9VUv>A zCv3`}`(5O15_XlZ7xWfkSBvL%VFx8|m#}O61wTZ&0bz&4^I~Dw`BiM*9%0A*IfvnS z`4ZjQ6Mh3{`YuoCqkcVS@_?a_`!#RE_eZ|ue$lThpuw*h`lLViH^}|Dk3M}K6$G-) zE+noEIDhp>{1((12~F3s^4j1f?fFBT8;-)jdFFW1WXCK(Rs&0M`px)2V?7Ld!{xlv zE6*1`Xt`3T0O76imd(SmTS`(BtoPz4;31uIx;LN1unnG`0%p)RdU^`PQ5RcZ8&Ft_ zB!cZ;{1;`B9bP?&5!orMQYtvtt1qxx73bx@;buZz_U+&%e@;F6Q5sF(_L&84p*L8s1BJ7CN_n@%5q}*{~cMJQhuzQ3(DeS1Qr-j`s>^Whd zkR|k@igOCFYTZdog|l+a=Lp|w`C_%~m%;u1oD2*i^cjCSiD3`2~YMB)( z&YtFCFnswhgB$!9*X=3DP{DnEHAhOwF~6EMO5IMan7STc=pk?`|4B*1)Z_Q+?s@R#a5I+8ktkMs){?AP2Q(IjiRea zy)$ZU&g%WCEcjAR1*X;6C=b4Nqfpf}UYbzeCb^@)wuW{Jt@W<(r*Ym_`L?$&{_e81 z-j%Vpy(^V!HYNGAoH zjbgNmje>3?D_b(l0Li80_)L*yrd@_EH{D|BDQy42dIefi`QBR_}wI8|OQ~r`W zx8h#V+^Se%J|T74DT1q~uCUBgm(Remb;h*M!a!lpJz$x=dJ3~oQcNAZwwzxH?<npN=Ew4dseDV69d7Gu?QCst%jDD9$)QL&g>=!AoQ+#s@j&r^>8eyN$`zwhYnss) zOG87^aO)@o3`+;bqarZcHxWholE7>sJtnAFn#klwfN}rZG&q^bmRd6Tvniu+FR0Mn z55DSS+PVC^VHWYF@O4P=}kzhthbJE#yZU z^=UF+%#7rtp+>$K;(2mdS9tD)mo;un_BQIlXl%))Ceov4P3-UN$mGZdGiPP80Dtb%AS>rhEn+hjV&XMEf;k*whZSBEvCwrar9bgSZwJ+E?39{voF)7mi>ins+7q_ zErXfTa3;zQ6;+rUMC?;(8~Rk*ZCO~#g~cfCG=OoNCZtDG6ABO2lfx<;Ocl`)bRR9? 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Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + KEEP (*crtbegin.o(.ctors)) + KEEP (*crtbegin?.o(.ctors)) + /* We don't want to include the .ctor section from + the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + } >rom + + .dtors : + { + KEEP (*crtbegin.o(.dtors)) + KEEP (*crtbegin?.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + } >rom + + .lalign : + { + . = ALIGN(4); + } >rom + + .dalign : + { + . = ALIGN(4); + } >ram AT>rom + + .data : + { + PROVIDE( _data = . ); + *(.data .data.*) + *(.gnu.linkonce.d.*) + . = ALIGN(8); + PROVIDE( __global_pointer$ = . + 0x800 ); + *(.sdata .sdata.*) + *(.gnu.linkonce.s.*) + } >ram AT>rom + + PROVIDE( _data_lma = LOADADDR(.data) ); + + . = ALIGN(4); + PROVIDE( _edata = . ); + PROVIDE( edata = . ); + + PROVIDE( _fbss = . ); + PROVIDE( __bss_start = . ); + .bss : + { + *(.sbss*) + *(.gnu.linkonce.sb.*) + *(.bss .bss.*) + *(.gnu.linkonce.b.*) + *(COMMON) + . = ALIGN(4); + } >ram + + . = ALIGN(8); + PROVIDE( _end = . ); + PROVIDE( end = . ); +} + +PROVIDE(_sp = ORIGIN(ram) + LENGTH(ram)); +PROVIDE(_heap_end = ORIGIN(ram) + LENGTH(ram)); diff --git a/c_project/pqvexriscvsim.ld b/c_project/pqvexriscvsim.ld new file mode 100644 index 0000000..1d34047 --- /dev/null +++ b/c_project/pqvexriscvsim.ld @@ -0,0 +1,14 @@ +OUTPUT_FORMAT("elf32-littleriscv", "elf32-littleriscv", "elf32-littleriscv") +OUTPUT_ARCH(riscv) + +ENTRY( _start ) + +__ram_size = 384K; + +MEMORY +{ + rom (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 256K + ram (wxa!ri) : ORIGIN = 0x80040000, LENGTH = 128K +} + +INCLUDE nonvolatile.ld diff --git a/c_project/printf.c b/c_project/printf.c new file mode 100644 index 0000000..7bf7d74 --- /dev/null +++ b/c_project/printf.c @@ -0,0 +1,987 @@ +/////////////////////////////////////////////////////////////////////////////// +// \author (c) Marco Paland (info@paland.com) +// 2014-2019, PALANDesign Hannover, Germany +// +// \license The MIT License (MIT) +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. +// +// \brief Tiny printf, sprintf and (v)snprintf implementation, optimized for speed on +// embedded systems with a very limited resources. These routines are thread +// safe and reentrant! +// Use this instead of the bloated standard/newlib printf cause these use +// malloc for printf (and may not be thread safe). +// +/////////////////////////////////////////////////////////////////////////////// + +#include +#include + +#include "printf.h" + + +// define this globally (e.g. gcc -DPRINTF_INCLUDE_CONFIG_H ...) to include the +// printf_config.h header file +// default: undefined +#ifdef PRINTF_INCLUDE_CONFIG_H +#include "printf_config.h" +#endif + + +// 'ntoa' conversion buffer size, this must be big enough to hold one converted +// numeric number including padded zeros (dynamically created on stack) +// default: 32 byte +#ifndef PRINTF_NTOA_BUFFER_SIZE +#define PRINTF_NTOA_BUFFER_SIZE 32U +#endif + +// 'ftoa' conversion buffer size, this must be big enough to hold one converted +// float number including padded zeros (dynamically created on stack) +// default: 32 byte +#ifndef PRINTF_FTOA_BUFFER_SIZE +#define PRINTF_FTOA_BUFFER_SIZE 32U +#endif + +// support for the floating point type (%f) +// default: activated +// #ifndef PRINTF_DISABLE_SUPPORT_FLOAT +// #define PRINTF_SUPPORT_FLOAT +// #endif + +// support for exponential floating point notation (%e/%g) +// default: activated +// #ifndef PRINTF_DISABLE_SUPPORT_EXPONENTIAL +// #define PRINTF_SUPPORT_EXPONENTIAL +// #endif + +// define the default floating point precision +// default: 6 digits +// #ifndef PRINTF_DEFAULT_FLOAT_PRECISION +// #define PRINTF_DEFAULT_FLOAT_PRECISION 6U +// #endif + +// define the largest float suitable to print with %f +// default: 1e9 +// #ifndef PRINTF_MAX_FLOAT +// #define PRINTF_MAX_FLOAT 1e9 +// #endif + +// support for the long long types (%llu or %p) +// default: activated +#ifndef PRINTF_DISABLE_SUPPORT_LONG_LONG +#define PRINTF_SUPPORT_LONG_LONG +#endif + +// support for the ptrdiff_t type (%t) +// ptrdiff_t is normally defined in as long or long long type +// default: activated +// #ifndef PRINTF_DISABLE_SUPPORT_PTRDIFF_T +// #define PRINTF_SUPPORT_PTRDIFF_T +// #endif + +/////////////////////////////////////////////////////////////////////////////// + +// internal flag definitions +#define FLAGS_ZEROPAD (1U << 0U) +#define FLAGS_LEFT (1U << 1U) +#define FLAGS_PLUS (1U << 2U) +#define FLAGS_SPACE (1U << 3U) +#define FLAGS_HASH (1U << 4U) +#define FLAGS_UPPERCASE (1U << 5U) +#define FLAGS_CHAR (1U << 6U) +#define FLAGS_SHORT (1U << 7U) +#define FLAGS_LONG (1U << 8U) +#define FLAGS_LONG_LONG (1U << 9U) +#define FLAGS_PRECISION (1U << 10U) +#define FLAGS_ADAPT_EXP (1U << 11U) + + +// import float.h for DBL_MAX +// #if defined(PRINTF_SUPPORT_FLOAT) +// #include +// #endif + + +// output function type +typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen); + + +// wrapper (used as buffer) for output function type +typedef struct { + void (*fct)(char character, void* arg); + void* arg; +} out_fct_wrap_type; + + +// Sometimes div modulo is not available, we implement one with shift/and/or +static int divmod(int* Qptr, int* Rptr, const int N, const int D) { + if (D == 0) { + return -1; + } + + int Q = 0; + int R = 0; + for (int i = 8*sizeof(int) - 1; i >= 0; i--) { + R <<= 1; + R |= (N >> i) & 0x1; + if (R >= D) { + R -= D; + Q |= 1 << i; + } + } + *Qptr = Q; + *Rptr = R; + return 0; +} + +// Sometimes div modulo is not available, we implement one with shift/and/or +static int divmod_long_long(long long* Qptr, long long* Rptr, const long long N, const int D) { + if (D == 0) { + return -1; + } + + long long Q = 0; + long long R = 0; + for (long long i = 8*sizeof(long long) - 1; i >= 0; i--) { + R <<= 1; + R |= (N >> i) & 0x1; + if (R >= D) { + R -= D; + Q |= 1 << i; + } + } + *Qptr = Q; + *Rptr = R; + return 0; +} + + +// internal buffer output +static inline void _out_buffer(char character, void* buffer, size_t idx, size_t maxlen) +{ + if (idx < maxlen) { + ((char*)buffer)[idx] = character; + } +} + + +// internal null output +static inline void _out_null(char character, void* buffer, size_t idx, size_t maxlen) +{ + (void)character; (void)buffer; (void)idx; (void)maxlen; +} + + +// internal _putchar wrapper +static inline void _out_char(char character, void* buffer, size_t idx, size_t maxlen) +{ + (void)buffer; (void)idx; (void)maxlen; + if (character) { + _putchar(character); + } +} + + +// internal output function wrapper +static inline void _out_fct(char character, void* buffer, size_t idx, size_t maxlen) +{ + (void)idx; (void)maxlen; + if (character) { + // buffer is the output fct pointer + ((out_fct_wrap_type*)buffer)->fct(character, ((out_fct_wrap_type*)buffer)->arg); + } +} + + +// internal secure strlen +// \return The length of the string (excluding the terminating 0) limited by 'maxsize' +static inline unsigned int _strnlen_s(const char* str, size_t maxsize) +{ + const char* s; + for (s = str; *s && maxsize--; ++s); + return (unsigned int)(s - str); +} + + +// internal test if char is a digit (0-9) +// \return true if char is a digit +static inline bool _is_digit(char ch) +{ + return (ch >= '0') && (ch <= '9'); +} + + +// internal ASCII string to unsigned int conversion +static unsigned int _atoi(const char** str) +{ + unsigned int i = 0U; + while (_is_digit(**str)) { + i = i * 10U + (unsigned int)(*((*str)++) - '0'); + } + return i; +} + + +// output the specified string in reverse, taking care of any zero-padding +static size_t _out_rev(out_fct_type out, char* buffer, size_t idx, size_t maxlen, const char* buf, size_t len, unsigned int width, unsigned int flags) +{ + const size_t start_idx = idx; + + // pad spaces up to given width + if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) { + for (size_t i = len; i < width; i++) { + out(' ', buffer, idx++, maxlen); + } + } + + // reverse string + while (len) { + out(buf[--len], buffer, idx++, maxlen); + } + + // append pad spaces up to given width + if (flags & FLAGS_LEFT) { + while (idx - start_idx < width) { + out(' ', buffer, idx++, maxlen); + } + } + + return idx; +} + + +// internal itoa format +static size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t maxlen, char* buf, size_t len, bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags) +{ + // pad leading zeros + if (!(flags & FLAGS_LEFT)) { + if (width && (flags & FLAGS_ZEROPAD) && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) { + width--; + } + while ((len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) { + buf[len++] = '0'; + } + while ((flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) { + buf[len++] = '0'; + } + } + + // handle hash + if (flags & FLAGS_HASH) { + if (!(flags & FLAGS_PRECISION) && len && ((len == prec) || (len == width))) { + len--; + if (len && (base == 16U)) { + len--; + } + } + if ((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) { + buf[len++] = 'x'; + } + else if ((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) { + buf[len++] = 'X'; + } + else if ((base == 2U) && (len < PRINTF_NTOA_BUFFER_SIZE)) { + buf[len++] = 'b'; + } + if (len < PRINTF_NTOA_BUFFER_SIZE) { + buf[len++] = '0'; + } + } + + if (len < PRINTF_NTOA_BUFFER_SIZE) { + if (negative) { + buf[len++] = '-'; + } + else if (flags & FLAGS_PLUS) { + buf[len++] = '+'; // ignore the space if the '+' exists + } + else if (flags & FLAGS_SPACE) { + buf[len++] = ' '; + } + } + + return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags); +} + + +// internal itoa for 'long' type +static size_t _ntoa_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long value, bool negative, unsigned long base, unsigned int prec, unsigned int width, unsigned int flags) +{ + char buf[PRINTF_NTOA_BUFFER_SIZE]; + size_t len = 0U; + int q, r; + + // no hash for 0 values + if (!value) { + flags &= ~FLAGS_HASH; + } + + // write if precision != 0 and value is != 0 + if (!(flags & FLAGS_PRECISION) || value) { + q = 0, r = 0; + len = 0; + do { + divmod(&q, &r, value, base); + const char digit = (char)(r); + // buf[idx2++] = '0' + digit; + buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10; + value = q; + } while (value && (len < PRINTF_NTOA_BUFFER_SIZE)); + // while (idx2 > 0) { + // _putchar(buf[--idx2]); + // written++; + // } + // idx++; + + + + // do { + // const char digit = (char)(value % base); + // buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10; + // value /= base; + // } while (value && (len < PRINTF_NTOA_BUFFER_SIZE)); + } + + return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags); +} + + +// // internal itoa for 'long long' type +#if defined(PRINTF_SUPPORT_LONG_LONG) +static size_t _ntoa_long_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long long value, bool negative, unsigned long long base, unsigned int prec, unsigned int width, unsigned int flags) +{ + char buf[PRINTF_NTOA_BUFFER_SIZE]; + size_t len = 0U; + long long q, r; + + // no hash for 0 values + if (!value) { + flags &= ~FLAGS_HASH; + } + + // write if precision != 0 and value is != 0 + if (!(flags & FLAGS_PRECISION) || value) { + q = 0, r = 0; + len = 0; + do { + divmod_long_long(&q, &r, value, base); + const char digit = (char)(r); + // buf[idx2++] = '0' + digit; + buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10; + value = q; + } while (value && (len < PRINTF_NTOA_BUFFER_SIZE)); + + + // do { + // const char digit = (char)(value % base); + // buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10; + // value /= base; + // } while (value && (len < PRINTF_NTOA_BUFFER_SIZE)); + } + + return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags); +} +#endif // PRINTF_SUPPORT_LONG_LONG + + +// #if defined(PRINTF_SUPPORT_FLOAT) +// +// #if defined(PRINTF_SUPPORT_EXPONENTIAL) +// // forward declaration so that _ftoa can switch to exp notation for values > PRINTF_MAX_FLOAT +// static size_t _etoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags); +// #endif +// +// +// // internal ftoa for fixed decimal floating point +// static size_t _ftoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags) +// { +// char buf[PRINTF_FTOA_BUFFER_SIZE]; +// size_t len = 0U; +// double diff = 0.0; +// +// // powers of 10 +// static const double pow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 }; +// +// // test for special values +// if (value != value) +// return _out_rev(out, buffer, idx, maxlen, "nan", 3, width, flags); +// if (value < -DBL_MAX) +// return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags); +// if (value > DBL_MAX) +// return _out_rev(out, buffer, idx, maxlen, (flags & FLAGS_PLUS) ? "fni+" : "fni", (flags & FLAGS_PLUS) ? 4U : 3U, width, flags); +// +// // test for very large values +// // standard printf behavior is to print EVERY whole number digit -- which could be 100s of characters overflowing your buffers == bad +// if ((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) { +// #if defined(PRINTF_SUPPORT_EXPONENTIAL) +// return _etoa(out, buffer, idx, maxlen, value, prec, width, flags); +// #else +// return 0U; +// #endif +// } +// +// // test for negative +// bool negative = false; +// if (value < 0) { +// negative = true; +// value = 0 - value; +// } +// +// // set default precision, if not set explicitly +// if (!(flags & FLAGS_PRECISION)) { +// prec = PRINTF_DEFAULT_FLOAT_PRECISION; +// } +// // limit precision to 9, cause a prec >= 10 can lead to overflow errors +// while ((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) { +// buf[len++] = '0'; +// prec--; +// } +// +// int whole = (int)value; +// double tmp = (value - whole) * pow10[prec]; +// unsigned long frac = (unsigned long)tmp; +// diff = tmp - frac; +// +// if (diff > 0.5) { +// ++frac; +// // handle rollover, e.g. case 0.99 with prec 1 is 1.0 +// if (frac >= pow10[prec]) { +// frac = 0; +// ++whole; +// } +// } +// else if (diff < 0.5) { +// } +// else if ((frac == 0U) || (frac & 1U)) { +// // if halfway, round up if odd OR if last digit is 0 +// ++frac; +// } +// +// if (prec == 0U) { +// diff = value - (double)whole; +// if ((!(diff < 0.5) || (diff > 0.5)) && (whole & 1)) { +// // exactly 0.5 and ODD, then round up +// // 1.5 -> 2, but 2.5 -> 2 +// ++whole; +// } +// } +// else { +// unsigned int count = prec; +// // now do fractional part, as an unsigned number +// while (len < PRINTF_FTOA_BUFFER_SIZE) { +// --count; +// buf[len++] = (char)(48U + (frac % 10U)); +// if (!(frac /= 10U)) { +// break; +// } +// } +// // add extra 0s +// while ((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) { +// buf[len++] = '0'; +// } +// if (len < PRINTF_FTOA_BUFFER_SIZE) { +// // add decimal +// buf[len++] = '.'; +// } +// } +// +// // do whole part, number is reversed +// while (len < PRINTF_FTOA_BUFFER_SIZE) { +// buf[len++] = (char)(48 + (whole % 10)); +// if (!(whole /= 10)) { +// break; +// } +// } +// +// // pad leading zeros +// if (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD)) { +// if (width && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) { +// width--; +// } +// while ((len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) { +// buf[len++] = '0'; +// } +// } +// +// if (len < PRINTF_FTOA_BUFFER_SIZE) { +// if (negative) { +// buf[len++] = '-'; +// } +// else if (flags & FLAGS_PLUS) { +// buf[len++] = '+'; // ignore the space if the '+' exists +// } +// else if (flags & FLAGS_SPACE) { +// buf[len++] = ' '; +// } +// } +// +// return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags); +// } +// +// +// #if defined(PRINTF_SUPPORT_EXPONENTIAL) +// // internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse +// static size_t _etoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags) +// { +// // check for NaN and special values +// if ((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) { +// return _ftoa(out, buffer, idx, maxlen, value, prec, width, flags); +// } +// +// // determine the sign +// const bool negative = value < 0; +// if (negative) { +// value = -value; +// } +// +// // default precision +// if (!(flags & FLAGS_PRECISION)) { +// prec = PRINTF_DEFAULT_FLOAT_PRECISION; +// } +// +// // determine the decimal exponent +// // based on the algorithm by David Gay (https://www.ampl.com/netlib/fp/dtoa.c) +// union { +// uint64_t U; +// double F; +// } conv; +// +// conv.F = value; +// int exp2 = (int)((conv.U >> 52U) & 0x07FFU) - 1023; // effectively log2 +// conv.U = (conv.U & ((1ULL << 52U) - 1U)) | (1023ULL << 52U); // drop the exponent so conv.F is now in [1,2) +// // now approximate log10 from the log2 integer part and an expansion of ln around 1.5 +// int expval = (int)(0.1760912590558 + exp2 * 0.301029995663981 + (conv.F - 1.5) * 0.289529654602168); +// // now we want to compute 10^expval but we want to be sure it won't overflow +// exp2 = (int)(expval * 3.321928094887362 + 0.5); +// const double z = expval * 2.302585092994046 - exp2 * 0.6931471805599453; +// const double z2 = z * z; +// conv.U = (uint64_t)(exp2 + 1023) << 52U; +// // compute exp(z) using continued fractions, see https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex +// conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14))))); +// // correct for rounding errors +// if (value < conv.F) { +// expval--; +// conv.F /= 10; +// } +// +// // the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters +// unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U; +// +// // in "%g" mode, "prec" is the number of *significant figures* not decimals +// if (flags & FLAGS_ADAPT_EXP) { +// // do we want to fall-back to "%f" mode? +// if ((value >= 1e-4) && (value < 1e6)) { +// if ((int)prec > expval) { +// prec = (unsigned)((int)prec - expval - 1); +// } +// else { +// prec = 0; +// } +// flags |= FLAGS_PRECISION; // make sure _ftoa respects precision +// // no characters in exponent +// minwidth = 0U; +// expval = 0; +// } +// else { +// // we use one sigfig for the whole part +// if ((prec > 0) && (flags & FLAGS_PRECISION)) { +// --prec; +// } +// } +// } +// +// // will everything fit? +// unsigned int fwidth = width; +// if (width > minwidth) { +// // we didn't fall-back so subtract the characters required for the exponent +// fwidth -= minwidth; +// } else { +// // not enough characters, so go back to default sizing +// fwidth = 0U; +// } +// if ((flags & FLAGS_LEFT) && minwidth) { +// // if we're padding on the right, DON'T pad the floating part +// fwidth = 0U; +// } +// +// // rescale the float value +// if (expval) { +// value /= conv.F; +// } +// +// // output the floating part +// const size_t start_idx = idx; +// idx = _ftoa(out, buffer, idx, maxlen, negative ? -value : value, prec, fwidth, flags & ~FLAGS_ADAPT_EXP); +// +// // output the exponent part +// if (minwidth) { +// // output the exponential symbol +// out((flags & FLAGS_UPPERCASE) ? 'E' : 'e', buffer, idx++, maxlen); +// // output the exponent value +// idx = _ntoa_long(out, buffer, idx, maxlen, (expval < 0) ? -expval : expval, expval < 0, 10, 0, minwidth-1, FLAGS_ZEROPAD | FLAGS_PLUS); +// // might need to right-pad spaces +// if (flags & FLAGS_LEFT) { +// while (idx - start_idx < width) out(' ', buffer, idx++, maxlen); +// } +// } +// return idx; +// } +// #endif // PRINTF_SUPPORT_EXPONENTIAL +// #endif // PRINTF_SUPPORT_FLOAT + + +// internal vsnprintf +static int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char* format, va_list va) +{ + unsigned int flags, width, precision, n; + size_t idx = 0U; + + if (!buffer) { + // use null output function + out = _out_null; + } + + while (*format) + { + // format specifier? %[flags][width][.precision][length] + if (*format != '%') { + // no + out(*format, buffer, idx++, maxlen); + format++; + continue; + } + else { + // yes, evaluate it + format++; + } + + // evaluate flags + flags = 0U; + do { + switch (*format) { + case '0': flags |= FLAGS_ZEROPAD; format++; n = 1U; break; + case '-': flags |= FLAGS_LEFT; format++; n = 1U; break; + case '+': flags |= FLAGS_PLUS; format++; n = 1U; break; + case ' ': flags |= FLAGS_SPACE; format++; n = 1U; break; + case '#': flags |= FLAGS_HASH; format++; n = 1U; break; + default : n = 0U; break; + } + } while (n); + + // evaluate width field + width = 0U; + if (_is_digit(*format)) { + width = _atoi(&format); + } + else if (*format == '*') { + const int w = va_arg(va, int); + if (w < 0) { + flags |= FLAGS_LEFT; // reverse padding + width = (unsigned int)-w; + } + else { + width = (unsigned int)w; + } + format++; + } + + // evaluate precision field + precision = 0U; + if (*format == '.') { + flags |= FLAGS_PRECISION; + format++; + if (_is_digit(*format)) { + precision = _atoi(&format); + } + else if (*format == '*') { + const int prec = (int)va_arg(va, int); + precision = prec > 0 ? (unsigned int)prec : 0U; + format++; + } + } + + // evaluate length field + switch (*format) { + case 'l' : + flags |= FLAGS_LONG; + format++; + if (*format == 'l') { + flags |= FLAGS_LONG_LONG; + format++; + } + break; + case 'h' : + flags |= FLAGS_SHORT; + format++; + if (*format == 'h') { + flags |= FLAGS_CHAR; + format++; + } + break; +// #if defined(PRINTF_SUPPORT_PTRDIFF_T) +// case 't' : +// flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG); +// format++; +// break; +// #endif + case 'j' : + flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG); + format++; + break; + case 'z' : + flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG); + format++; + break; + default : + break; + } + + // evaluate specifier + switch (*format) { + case 'd' : + case 'i' : + case 'u' : + case 'x' : + case 'X' : + case 'o' : + case 'b' : { + // set the base + unsigned int base; + if (*format == 'x' || *format == 'X') { + base = 16U; + } + else if (*format == 'o') { + base = 8U; + } + else if (*format == 'b') { + base = 2U; + } + else { + base = 10U; + flags &= ~FLAGS_HASH; // no hash for dec format + } + // uppercase + if (*format == 'X') { + flags |= FLAGS_UPPERCASE; + } + + // no plus or space flag for u, x, X, o, b + if ((*format != 'i') && (*format != 'd')) { + flags &= ~(FLAGS_PLUS | FLAGS_SPACE); + } + + // ignore '0' flag when precision is given + if (flags & FLAGS_PRECISION) { + flags &= ~FLAGS_ZEROPAD; + } + + // convert the integer + if ((*format == 'i') || (*format == 'd')) { + // signed + if (flags & FLAGS_LONG_LONG) { +#if defined(PRINTF_SUPPORT_LONG_LONG) + const long long value = va_arg(va, long long); + idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags); +#endif + } + else if (flags & FLAGS_LONG) { + const long value = va_arg(va, long); + idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags); + } + else { + const int value = (flags & FLAGS_CHAR) ? (char)va_arg(va, int) : (flags & FLAGS_SHORT) ? (short int)va_arg(va, int) : va_arg(va, int); + idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags); + } + } + else { + // unsigned + if (flags & FLAGS_LONG_LONG) { +#if defined(PRINTF_SUPPORT_LONG_LONG) + idx = _ntoa_long_long(out, buffer, idx, maxlen, va_arg(va, unsigned long long), false, base, precision, width, flags); +#endif + } + else if (flags & FLAGS_LONG) { + idx = _ntoa_long(out, buffer, idx, maxlen, va_arg(va, unsigned long), false, base, precision, width, flags); + } + else { + const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va_arg(va, unsigned int) : (flags & FLAGS_SHORT) ? (unsigned short int)va_arg(va, unsigned int) : va_arg(va, unsigned int); + idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags); + } + } + format++; + break; + } +// #if defined(PRINTF_SUPPORT_FLOAT) +// case 'f' : +// case 'F' : +// if (*format == 'F') flags |= FLAGS_UPPERCASE; +// idx = _ftoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags); +// format++; +// break; +// #if defined(PRINTF_SUPPORT_EXPONENTIAL) +// case 'e': +// case 'E': +// case 'g': +// case 'G': +// if ((*format == 'g')||(*format == 'G')) flags |= FLAGS_ADAPT_EXP; +// if ((*format == 'E')||(*format == 'G')) flags |= FLAGS_UPPERCASE; +// idx = _etoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags); +// format++; +// break; +// #endif // PRINTF_SUPPORT_EXPONENTIAL +// #endif // PRINTF_SUPPORT_FLOAT + case 'c' : { + unsigned int l = 1U; + // pre padding + if (!(flags & FLAGS_LEFT)) { + while (l++ < width) { + out(' ', buffer, idx++, maxlen); + } + } + // char output + out((char)va_arg(va, int), buffer, idx++, maxlen); + // post padding + if (flags & FLAGS_LEFT) { + while (l++ < width) { + out(' ', buffer, idx++, maxlen); + } + } + format++; + break; + } + + case 's' : { + const char* p = va_arg(va, char*); + unsigned int l = _strnlen_s(p, precision ? precision : (size_t)-1); + // pre padding + if (flags & FLAGS_PRECISION) { + l = (l < precision ? l : precision); + } + if (!(flags & FLAGS_LEFT)) { + while (l++ < width) { + out(' ', buffer, idx++, maxlen); + } + } + // string output + while ((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) { + out(*(p++), buffer, idx++, maxlen); + } + // post padding + if (flags & FLAGS_LEFT) { + while (l++ < width) { + out(' ', buffer, idx++, maxlen); + } + } + format++; + break; + } + + case 'p' : { + width = sizeof(void*) * 2U; + flags |= FLAGS_ZEROPAD | FLAGS_UPPERCASE; +#if defined(PRINTF_SUPPORT_LONG_LONG) + const bool is_ll = sizeof(uintptr_t) == sizeof(long long); + if (is_ll) { + idx = _ntoa_long_long(out, buffer, idx, maxlen, (uintptr_t)va_arg(va, void*), false, 16U, precision, width, flags); + } + else { +#endif + idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)((uintptr_t)va_arg(va, void*)), false, 16U, precision, width, flags); +#if defined(PRINTF_SUPPORT_LONG_LONG) + } +#endif + format++; + break; + } + + case '%' : + out('%', buffer, idx++, maxlen); + format++; + break; + + default : + out(*format, buffer, idx++, maxlen); + format++; + break; + } + } + + // termination + out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen); + + // return written chars without terminating \0 + return (int)idx; +} + + +/////////////////////////////////////////////////////////////////////////////// + +int printf_(const char* format, ...) +{ + va_list va; + va_start(va, format); + char buffer[1]; + const int ret = _vsnprintf(_out_char, buffer, (size_t)-1, format, va); + va_end(va); + return ret; +} + + +int sprintf_(char* buffer, const char* format, ...) +{ + va_list va; + va_start(va, format); + const int ret = _vsnprintf(_out_buffer, buffer, (size_t)-1, format, va); + va_end(va); + return ret; +} + + +int snprintf_(char* buffer, size_t count, const char* format, ...) +{ + va_list va; + va_start(va, format); + const int ret = _vsnprintf(_out_buffer, buffer, count, format, va); + va_end(va); + return ret; +} + + +int vprintf_(const char* format, va_list va) +{ + char buffer[1]; + return _vsnprintf(_out_char, buffer, (size_t)-1, format, va); +} + + +int vsnprintf_(char* buffer, size_t count, const char* format, va_list va) +{ + return _vsnprintf(_out_buffer, buffer, count, format, va); +} + + +int fctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...) +{ + va_list va; + va_start(va, format); + const out_fct_wrap_type out_fct_wrap = { out, arg }; + const int ret = _vsnprintf(_out_fct, (char*)(uintptr_t)&out_fct_wrap, (size_t)-1, format, va); + va_end(va); + return ret; +} diff --git a/c_project/printf.h b/c_project/printf.h new file mode 100644 index 0000000..165f348 --- /dev/null +++ b/c_project/printf.h @@ -0,0 +1,121 @@ +/////////////////////////////////////////////////////////////////////////////// +// \author (c) Marco Paland (info@paland.com) +// 2014-2019, PALANDesign Hannover, Germany +// +// \license The MIT License (MIT) +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. +// +// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on +// embedded systems with a very limited resources. +// Use this instead of bloated standard/newlib printf. +// These routines are thread safe and reentrant. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef _PRINTF_H_ +#define _PRINTF_H_ + +#include +#include + + +#ifdef __cplusplus +extern "C" { +#endif + +#define PRINTF_DISABLE_SUPPORT_FLOAT +#define PRINTF_DISABLE_SUPPORT_EXPONENTIAL +// #define PRINTF_DISABLE_SUPPORT_LONG_LONG +#define PRINTF_DISABLE_SUPPORT_PTRDIFF_T + +/** + * Output a character to a custom device like UART, used by the printf() function + * This function is declared here only. You have to write your custom implementation somewhere + * \param character Character to output + */ +void _putchar(char character); + + +/** + * Tiny printf implementation + * You have to implement _putchar if you use printf() + * To avoid conflicts with the regular printf() API it is overridden by macro defines + * and internal underscore-appended functions like printf_() are used + * \param format A string that specifies the format of the output + * \return The number of characters that are written into the array, not counting the terminating null character + */ +#define printf printf_ +int printf_(const char* format, ...); + + +/** + * Tiny sprintf implementation + * Due to security reasons (buffer overflow) YOU SHOULD CONSIDER USING (V)SNPRINTF INSTEAD! + * \param buffer A pointer to the buffer where to store the formatted string. MUST be big enough to store the output! + * \param format A string that specifies the format of the output + * \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character + */ +#define sprintf sprintf_ +int sprintf_(char* buffer, const char* format, ...); + + +/** + * Tiny snprintf/vsnprintf implementation + * \param buffer A pointer to the buffer where to store the formatted string + * \param count The maximum number of characters to store in the buffer, including a terminating null character + * \param format A string that specifies the format of the output + * \param va A value identifying a variable arguments list + * \return The number of characters that COULD have been written into the buffer, not counting the terminating + * null character. A value equal or larger than count indicates truncation. Only when the returned value + * is non-negative and less than count, the string has been completely written. + */ +#define snprintf snprintf_ +#define vsnprintf vsnprintf_ +int snprintf_(char* buffer, size_t count, const char* format, ...); +int vsnprintf_(char* buffer, size_t count, const char* format, va_list va); + + +/** + * Tiny vprintf implementation + * \param format A string that specifies the format of the output + * \param va A value identifying a variable arguments list + * \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character + */ +#define vprintf vprintf_ +int vprintf_(const char* format, va_list va); + + +/** + * printf with output function + * You may use this as dynamic alternative to printf() with its fixed _putchar() output + * \param out An output function which takes one character and an argument pointer + * \param arg An argument pointer for user data passed to output function + * \param format A string that specifies the format of the output + * \return The number of characters that are sent to the output function, not counting the terminating null character + */ +int fctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...); + + +#ifdef __cplusplus +} +#endif + + +#endif // _PRINTF_H_ diff --git a/c_project/printf.o b/c_project/printf.o new file mode 100644 index 0000000000000000000000000000000000000000..89e63bbb7ea9d50b059743b4cbe7420fc00d1061 GIT binary patch literal 122220 zcmeFa4VYC`**?DZ+4IHB00Rf*L)4K0LFH>^Kq0Y)Y4F8YEJ`#|bie}$IeZ9%Vqy*f ziUJeVxi(2ik6l3VquwST7FS#Quu+Tg$ja-^1JW#thLW`mP1G1>VN(I*Y(@i z1^d45^{lm?^|{wxd(S?Xj~a7w6h+1#k$Kx>nK2W7FKmc4=x2JE?k025GiLLWhfGz= zt>*j|WB;Y2=!3XwVO&*tR9rQ%I;!eFGO9ZE3sF_SNm13&7e-aR7vkJ0g>$N^*DC&t zsw%$|r59A0^wmWsU0P^bm*HPK;C97k(a}-7=(v$_rb~HIdS2ROZY=AWdFRpPEaEv__~YxW)8T5RGf^R8(v zt}vN`k{--2y|^p*6R9e**QDpxnoO72WWLhev2}SnGs|o#u=y{0HMO}2@!(^+xTUzN zi%>%vWH$2VVn&!&}%OPNl(z@#=WUv6sK-w@RnTxH@>yARYBt*C1) 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z;PRR;GyL!6o!R<3O?ExDPV?BRzR%+S^R!NFx_x=$nmhKF*Vg4VUl#M<%e%yXhjZuH za#-_v{QtO}xyaCyra1|Jvtw+_OEp zK5w2b*LN2G8Moh~&3_H=*8Dd97&o%{Ie+<|=69YZ2fw$TOxLr`Zs5+%&kAh(&dKz& qW@x&3(f#kgjV8MmXztf}dp$=kkAGgRo1tsJ=X-R$l2P+}cK-_ux~0ef literal 0 HcmV?d00001 diff --git a/c_project/vexriscv/init.c b/c_project/vexriscv/init.c new file mode 100644 index 0000000..35df643 --- /dev/null +++ b/c_project/vexriscv/init.c @@ -0,0 +1,13 @@ +#include "weak_under_alias.h" + +void __weak__init() {} + +void __weak__fini() {} + +weak_under_alias(_init); +weak_under_alias(_fini); + +void _exit(int code) { + (void)code; + while (1) {} +} \ No newline at end of file diff --git a/c_project/vexriscv/nonvolatile.ld b/c_project/vexriscv/nonvolatile.ld new file mode 100644 index 0000000..0809fad --- /dev/null +++ b/c_project/vexriscv/nonvolatile.ld @@ -0,0 +1,141 @@ +/* SECTIONS for non-volatile chip configuration, i.e. chips with flash */ + +SECTIONS +{ + .init : + { + KEEP (*(SORT_NONE(.init))) + } >rom + + .text : + { + *(.text.unlikely .text.unlikely.*) + *(.text.startup .text.startup.*) + *(.text .text.*) + *(.gnu.linkonce.t.*) + } >rom + + .fini : + { + KEEP (*(SORT_NONE(.fini))) + } >rom + + PROVIDE (__etext = .); + PROVIDE (_etext = .); + PROVIDE (etext = .); + + .rodata : + { + *(.rdata) + *(.rodata .rodata.*) + *(.gnu.linkonce.r.*) + . = ALIGN(8); + *(.srodata.cst16) + *(.srodata.cst8) + *(.srodata.cst4) + *(.srodata.cst2) + *(.srodata .srodata.*) + } >rom + + . = ALIGN(4); + + .preinit_array : + { + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP (*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + } >rom + + .init_array : + { + PROVIDE_HIDDEN (__init_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*))) + KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors)) + PROVIDE_HIDDEN (__init_array_end = .); + } >rom + + .fini_array : + { + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*))) + KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors)) + PROVIDE_HIDDEN (__fini_array_end = .); + } >rom + + .ctors : + { + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is + first. Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + KEEP (*crtbegin.o(.ctors)) + KEEP (*crtbegin?.o(.ctors)) + /* We don't want to include the .ctor section from + the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + } >rom + + .dtors : + { + KEEP (*crtbegin.o(.dtors)) + KEEP (*crtbegin?.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + } >rom + + .lalign : + { + . = ALIGN(4); + } >rom + + .dalign : + { + . = ALIGN(4); + } >ram AT>rom + + .data : + { + PROVIDE( _data = . ); + *(.data .data.*) + *(.gnu.linkonce.d.*) + . = ALIGN(8); + PROVIDE( __global_pointer$ = . + 0x800 ); + *(.sdata .sdata.*) + *(.gnu.linkonce.s.*) + } >ram AT>rom + + PROVIDE( _data_lma = LOADADDR(.data) ); + + . = ALIGN(4); + PROVIDE( _edata = . ); + PROVIDE( edata = . ); + + PROVIDE( _fbss = . ); + PROVIDE( __bss_start = . ); + .bss : + { + *(.sbss*) + *(.gnu.linkonce.sb.*) + *(.bss .bss.*) + *(.gnu.linkonce.b.*) + *(COMMON) + . = ALIGN(4); + } >ram + + . = ALIGN(8); + PROVIDE( _end = . ); + PROVIDE( end = . ); +} + +PROVIDE(_sp = ORIGIN(ram) + LENGTH(ram)); +PROVIDE(_heap_end = ORIGIN(ram) + LENGTH(ram)); diff --git a/c_project/vexriscv/pqvexriscvsim.ld b/c_project/vexriscv/pqvexriscvsim.ld new file mode 100644 index 0000000..f3e1ee6 --- /dev/null +++ b/c_project/vexriscv/pqvexriscvsim.ld @@ -0,0 +1,14 @@ +OUTPUT_FORMAT("elf32-littleriscv", "elf32-littleriscv", "elf32-littleriscv") +OUTPUT_ARCH(riscv) + +ENTRY( _start ) + +__ram_size = 128K; + +MEMORY +{ + rom (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 64K + ram (wxa!ri) : ORIGIN = 0x80010000, LENGTH = 64K +} + +INCLUDE nonvolatile.ld diff --git a/c_project/vexriscv/pqvexriscvsim_init.o b/c_project/vexriscv/pqvexriscvsim_init.o new file mode 100644 index 0000000000000000000000000000000000000000..da5c041b94d8b72eb0e69cadf39dcb7b0bc539e5 GIT binary patch literal 880 zcma)4yH3ME5L{yi2%<Eg= zFCabuX6-B(8klIkJF|0_^_}mJ`aR3CNMO-BeKVrhIccVb3awC)E*>b2F>A-&ZriP# z=$@X2E{NMw4dw0Ez1o5DTFR?t0v)p8vyz6s7f>AN}3{atYWKk1Vm zX`_au`c3lv+c3EDeU`q+IT-oj3=*#^%SbA@i%c*em6$lomr}*yb)ZZ*Go;P}6ObAt z38~>Yioy}J^ng`hOsoetCQPvF|KP&LC$u=X^L@*Cu*C1g*g|mKK`|to gS>z5&sEY`h4JDmoA7%Q6n?Yg^%_X2?Eq^iKaR&qT*uuyPNWnmhgc{TLODPMqK8Ok?V85IPTciU zrKpHnt4eT0J%nSp_0S84N?a|`J4hV4pdR3gxNty)@9pj++r7Y(X6F08d2fE-?0&Jm zb6E&M+64Vcr;O;T74@u#O^xR0Iqe#@^Qd(>Lg2lrARFyG#l5 z2Fo)kYa$cW+8KF%nhDO&GO{krpx!p+%G3;2W~OY2Y|v8~M_7T=w&caB z6Adnvw`;-eJzz`u{RGS>Gwu-+eYa(0?!R4ro_^=eqRj8=%FdM(83)ahIw z9(3JdXM8Z&_xoOzI+HPVuDQP38IIftQK!!WoV$}rXX3k_4{84zjoiUL^$!O=`JOw5 zC|dspxX6hNW32UK;NlyoV8o zVyu1E!Sm0DGQG|CY=n0i=OetwxDes{XbSw;V4Pot`3RTMyorAS8=tL;pAh5aSSM$4 zYvj9Kw7wU$dm8!uL!X>5ryQgdIbMJ0I)i;AQUv>ZosT_t)Cc9SpyT?!H|T!q_a{8% z|1!Qxe)9Tt^WKw|i3uMQ`{}P@+K>C#mQivj|K+y|pX9t-;6Lg?fa7DP1~9K-3xzF* zbNd;7oXV_o;k(>K;c)#G&jWC*HocDx2+8q&!N#l5csxD>J>F$t>|u;1v`vf`r&GxF uQj>FX$1eQJDExF@LgDdvFFd|J6F|C+j;|QRrpM!yO8ODL1Dx;LwBNt+fzKiU literal 0 HcmV?d00001 diff --git a/c_project/vexriscv/start.S b/c_project/vexriscv/start.S new file mode 100644 index 0000000..f9c0ddc --- /dev/null +++ b/c_project/vexriscv/start.S @@ -0,0 +1,164 @@ + .section .init + .global _start + .type _start,@function +_start: + nop + nop + nop +#ifndef VEXRISCV_RWMTVEC + j + nop + nop + nop + nop + nop + nop + nop + j trap_entry +_crtInit: +#endif + .cfi_startproc + .cfi_undefined ra +.option push +.option norelax + la gp, __global_pointer$ +.option pop + la sp, _sp + +#ifndef VEXRISCV_VOLATILE + /* Load data section */ + la a0, _data_lma + la a1, _data + la a2, _edata + bgeu a1, a2, 2f +1: + lw t0, (a0) + sw t0, (a1) + addi a0, a0, 4 + addi a1, a1, 4 + bltu a1, a2, 1b +2: +#endif + + /* Clear bss section */ + la a0, __bss_start + la a1, _end + bgeu a0, a1, 2f +1: + sw zero, (a0) + addi a0, a0, 4 + bltu a0, a1, 1b +2: + + /* Call global constructors */ +#if 0 + /* [2019-12-12 Daan] Ha, ha! Nope! The stack machine seems to get + * corrupted in one of these calls. Afaik we don't need any of these + * constructors. Just skip it, and get on with calling main. */ + la a0, __libc_fini_array + call atexit + call __libc_init_array +#endif + + auipc ra, 0 + addi sp, sp, -16 + sw ra, 8(sp) + + /* Enable Interrupts and set trap vector */ +#ifndef VEXRISCV_RWMTVEC + la a0, trap_entry + csrw mtvec, a0 +#endif + li a0, 0x880 //880 enable timer + external interrupts + csrw mie, a0 + li a0, 0x1808 //1808 enable interrupts + csrw mstatus, a0 + + /* argc = argv = 0 */ + li a0, 0 + li a1, 0 + call main + tail exit +1: + j 1b + .cfi_endproc + + .align 4 + .weak trap_entry + .global trap_entry +trap_entry: + addi sp, sp, -32*4 + + sw x1, 1*4(sp) + sw x2, 2*4(sp) + sw x3, 3*4(sp) + sw x4, 4*4(sp) + sw x5, 5*4(sp) + sw x6, 6*4(sp) + sw x7, 7*4(sp) + sw x8, 8*4(sp) + sw x9, 9*4(sp) + sw x10, 10*4(sp) + sw x11, 11*4(sp) + sw x12, 12*4(sp) + sw x13, 13*4(sp) + sw x14, 14*4(sp) + sw x15, 15*4(sp) + sw x16, 16*4(sp) + sw x17, 17*4(sp) + sw x18, 18*4(sp) + sw x19, 19*4(sp) + sw x20, 20*4(sp) + sw x21, 21*4(sp) + sw x22, 22*4(sp) + sw x23, 23*4(sp) + sw x24, 24*4(sp) + sw x25, 25*4(sp) + sw x26, 26*4(sp) + sw x27, 27*4(sp) + sw x28, 28*4(sp) + sw x29, 29*4(sp) + sw x30, 30*4(sp) + sw x31, 31*4(sp) + + call irqCallback + + lw x1, 1*4(sp) + lw x2, 2*4(sp) + lw x3, 3*4(sp) + lw x4, 4*4(sp) + lw x5, 5*4(sp) + lw x6, 6*4(sp) + lw x7, 7*4(sp) + lw x8, 8*4(sp) + lw x9, 9*4(sp) + lw x10, 10*4(sp) + lw x11, 11*4(sp) + lw x12, 12*4(sp) + lw x13, 13*4(sp) + lw x14, 14*4(sp) + lw x15, 15*4(sp) + lw x16, 16*4(sp) + lw x17, 17*4(sp) + lw x18, 18*4(sp) + lw x19, 19*4(sp) + lw x20, 20*4(sp) + lw x21, 21*4(sp) + lw x22, 22*4(sp) + lw x23, 23*4(sp) + lw x24, 24*4(sp) + lw x25, 25*4(sp) + lw x26, 26*4(sp) + lw x27, 27*4(sp) + lw x28, 28*4(sp) + lw x29, 29*4(sp) + lw x30, 30*4(sp) + lw x31, 31*4(sp) + + addi sp, sp, 32*4 + mret + + .weak irqCallback +irqCallback: +1: + j 1b diff --git a/c_project/vexriscv/vexriscv.mk b/c_project/vexriscv/vexriscv.mk new file mode 100644 index 0000000..6c238df --- /dev/null +++ b/c_project/vexriscv/vexriscv.mk @@ -0,0 +1,45 @@ +PLATFORM ?= murax + +LIBWRAP_CFLAGS += -Os -Wall -Wextra +LIBWRAP_CFLAGS += $(GCC_RISCV_ARCHFLAGS) -fstrict-volatile-bitfields --specs=nosys.specs + +ifeq ($(PLATFORM),murax) +LIBWRAP_CFLAGS += -DVEXRISCV_VOLATILE +endif + +ifeq ($(PLATFORM),pqvexriscvup5k) +LIBWRAP_CFLAGS += -DVEXRISCV_VOLATILE -DVEXRISCV_RWMTVEC +endif + +ifeq ($(PLATFORM),pqvexriscvicoboard) +LIBWRAP_CFLAGS += -DVEXRISCV_VOLATILE -DVEXRISCV_RWMTVEC +endif + +ifeq ($(PLATFORM),pqvexriscvsim) +LIBWRAP_CFLAGS += -DVEXRISCV_RWMTVEC +endif + +LIBWRAP_DIR := $(dir $(lastword $(MAKEFILE_LIST))) + +LIBWRAP_SRCS_C = init.c +LIBWRAP_SRCS_ASM = start.s + +LIBWRAP_OBJS_ = $(LIBWRAP_SRCS_C:.c=.o) $(LIBWRAP_SRCS_ASM:.s=.o) +LIBWRAP_OBJS = $(addprefix $(LIBWRAP_DIR)$(PLATFORM)_,$(LIBWRAP_OBJS_)) + +LIBWRAP = lib$(PLATFORM)bsp.a + +$(LIBWRAP): $(LIBWRAP_OBJS) + @$(ECHO) $(LIGHTBLUE)"building "$@""$(LIGHTGRAY) + $(AR) rcs $@ $^ + +$(LIBWRAP_DIR)$(PLATFORM)_%.o: $(LIBWRAP_DIR)%.c + @$(ECHO) $(DARKBLUE)" "$(LIBWRAP_DIR)" "$(LIGHTGRAY) + @$(ECHO) $(DARKBLUE)"building "$@" (.c)"$(LIGHTGRAY) + $(GCC) $(LIBWRAP_CFLAGS) -c -o $@ $< + +$(LIBWRAP_DIR)$(PLATFORM)_%.o: $(LIBWRAP_DIR)%.S + @$(ECHO) $(DARKBLUE)"building "$@" (.S)"$(LIGHTGRAY) + $(GCC) $(LIBWRAP_CFLAGS) -c -o $@ $< + + diff --git a/c_project/vexriscv/weak_under_alias.h b/c_project/vexriscv/weak_under_alias.h new file mode 100644 index 0000000..4de2501 --- /dev/null +++ b/c_project/vexriscv/weak_under_alias.h @@ -0,0 +1,7 @@ +#ifndef WEAK_UNDER_ALIAS_H +#define WEAK_UNDER_ALIAS_H + +#define weak_under_alias(name) \ + extern __typeof (__weak_##name) name __attribute__ ((weak, alias ("__weak_"#name))) + +#endif /* WEAK_UNDER_ALIAS_H */ diff --git a/vexriscv/src/main/scala/mupq/MyMem.scala b/vexriscv/src/main/scala/mupq/MyMem.scala index 3ad7208..275e6df 100644 --- a/vexriscv/src/main/scala/mupq/MyMem.scala +++ b/vexriscv/src/main/scala/mupq/MyMem.scala @@ -4,22 +4,31 @@ import spinal.core._ import spinal.lib._ import spinal.lib.bus.amba3.apb._ +object MyMem{ + def getApb3Config = Apb3Config( + addressWidth = 20, + dataWidth = 32 + ) +} + class MyMem() extends Component { val io = new Bundle { - val bus = slave(Apb3(Apb3Config(addressWidth = 20, dataWidth = 32))) - val interrupt = out Bool + val bus = slave(Apb3(MyMem.getApb3Config)) } + val myReg = Reg(Bits(32 bit)) + val busCtrl = Apb3SlaveFactory(io.bus) + + busCtrl.readAndWrite(myReg,address = 0x30000,bitOffset = 0) + /** - val coproc = new KeccakCoproMultimemWrapper(dataWidth, keccakN) - **/ val busReady = Reg(Bool) init(false) val busAccess = io.bus.PENABLE && io.bus.PSEL(0) io.bus.PRDATA := 0 busReady := busAccess && !busReady io.bus.PREADY := busReady - io.interrupt := False - /** + + when(busReady) { when(io.bus.PWRITE) { start := io.bus.PWDATA(0) // Set flags on write, will trigger the coprocessor diff --git a/vexriscv/src/main/scala/mupq/PQVexRiscv.scala b/vexriscv/src/main/scala/mupq/PQVexRiscv.scala index ba04488..98c326c 100644 --- a/vexriscv/src/main/scala/mupq/PQVexRiscv.scala +++ b/vexriscv/src/main/scala/mupq/PQVexRiscv.scala @@ -168,7 +168,7 @@ abstract class PQVexRiscv( } val myMem = new MyMem() - core.timerInterrupt setWhen(myMem.io.interrupt) + // core.timerInterrupt setWhen(myMem.io.interrupt) apbMapping += myMem.io.bus -> (0x30000, 4 KiB) val apbDecoder = Apb3Decoder(