Merge pull request #309 from VisorFolks/development

Bumping changes into stable

.github/CODEOWNERS

@@ -1,22 +1,6 @@
-# Cyancore root
-*				@visorfolks/cc-arch-board
-
 # Akash Kollipara owns
 /mk/				@akashkollipara
-/src/arch/avr/			@akashkollipara
-/src/arch/riscv/		@akashkollipara
-/src/platform/mega_avr/		@akashkollipara
-/src/platform/sifive/		@akashkollipara
-/src/driver/			@akashkollipara
-/src/lib/			@akashkollipara
-/src/inlcude/			@akashkollipara
-/src/visor/			@akashkollipara
-
-# Mayuri Lokhande owns
-/src/arch/arm/			@MayuriLokhande
-/src/platform/pico/		@MayuriLokhande
-/src/visor/supervisor/		@MayuriLokhande
+/src/				@akashkollipara
 
 # Pranjal Chanda owns
-/src/visor/			@pranjalchanda08
-/src/lib/libposix/		@pranjalchanda08
+/src/				@pranjalchanda08

README.md

@@ -14,18 +14,13 @@
 
 > **Version (arch:2 | major:4 | minor:2): 1.4.1**
 > 
-[![GitHub CI](https://github.com/VisorFolks/cyancore/actions/workflows/github_ci.yml/badge.svg)](https://github.com/VisorFolks/cyancore/actions/workflows/github_ci.yml)
+[![GitHub CI](https://github.com/VisorFolks/cyancore/actions/workflows/github_ci.yml/badge.svg)](https://github.com/VisorFolks/cyancore/actions/workflows/github_ci.yml) [![Discord](https://img.shields.io/discord/859140196498014238?style=flat&logo=discord&logoSize=auto&label=VF%20Server)](https://discord.gg/gxUQr77MT2)
 
 Cyancore is an open source unified software platform for embedded system projects. VisorFolks is motivated to develope a framework which enables a developer/user to write a portable project which can run on any of the target. It is designed to be a goto framework for almost all projects, be it an Embedded applications, IoT, firmware, OS, etc. It provides flexibility, tighter integration of features and abilities by utilizing the hardware and software resources better and boost various KPIs of the final product.
 
 
 If you'd like to learn and contribute to this project, please follow below links for full documentation and start your endeavor.
 
-
-### Join VisorFolks Community Forum
-Connect with us over VisorFolks discord server
-<a href="https://discord.gg/gxUQr77MT2"> <img align="center" alt="VisorFolks Discord Server" width="30px" src="https://discord.com/assets/3437c10597c1526c3dbd98c737c2bcae.svg" /> </a>
-
 ### Help
 - [**Getting Started**](https://github.com/VisorFolks/cyancore/wiki/Getting-Started)
 - [**QEMU Test**](https://github.com/VisorFolks/cyancore/wiki/qemu-test)

src/arch/riscv/32/i/terravisor/exception_handler.c

@@ -1,6 +1,6 @@
 /*
  * CYANCORE LICENSE
- * Copyrights (C) 2019, Cyancore Team
+ * Copyrights (C) 2024, Cyancore Team
  *
  * File Name		: exception_handler.c
  * Description		: This file consists of sources for exception
@@ -67,7 +67,7 @@ void exception_handler(uint32_t mcause, context_frame_t *frame)
 	else
 	{
 		exhandler[cpuid][cause]();
-		frame->mepc += (MMIO8(frame->mepc) & 0x3) ? 4 : 2;
+		frame->mepc += (MMIO8(frame->mepc) & 0x2) ? 4 : 2;
 	}
 	set_context_frame(NULL);
 	fence(ow, ow);

src/lib/build.mk

@@ -16,6 +16,7 @@ include $(LIB_DIR)/libc/build.mk
 include $(LIB_DIR)/libresource/build.mk
 include $(LIB_DIR)/libsyslog/build.mk
 include $(LIB_DIR)/libccfs/build.mk
+include $(LIB_DIR)/liblocks/build.mk
 #==================================================
 
 include $(LIB_DIR)/libnmath/build.mk

src/lib/libc/string.c

@@ -49,7 +49,7 @@ void *memcpy(void *i, const void *j, size_t size)
 	{
 		*dst++ = *src++;
 	}
-	return i;
+	return dst;
 }
 
 void *memmove(void *i, const void *j, size_t size)

src/lib/liblocks/bakerylock.c

@@ -0,0 +1,44 @@
+
+#include <status.h>
+#include <stdint.h>
+#include <arch.h>
+#include <lock/bakerylock.h>
+
+void bakerylock_acquire(bakerylock_t *key)
+{
+	unsigned int tid = arch_core_index();
+	key->protect[tid] = 1;
+	arch_dmb();
+
+	unsigned int i, n_cust, n_max = 0;
+	for(i = 0; i < N_CORES; i++)
+	{
+		n_cust = key->thread_count[i];
+		n_max = n_cust > n_max ? n_cust : n_max;
+	}
+
+	key->thread_count[tid] = n_max + 1;
+
+	arch_dmb();
+	key->protect[tid] = 0;
+	arch_dmb();
+
+	for(i = 0; i < N_CORES; i++)
+	{
+		while(key->protect[i]);
+		arch_dmb();
+
+		while(key->thread_count[i] && (
+		      (key->thread_count[i] < key->thread_count[tid]) ||
+		       ((key->thread_count[i] == key->thread_count[tid]) &&
+			(i < tid))));
+	}
+}
+
+void bakerylock_release(bakerylock_t *key)
+{
+	unsigned int tid = arch_core_index();
+	arch_dmb();
+	key->thread_count[tid] = 0;
+}
+

src/lib/liblocks/build.mk

@@ -0,0 +1,20 @@
+#
+# CYANCORE LICENSE
+# Copyrights (C) 2024, Cyancore Team
+#
+# File Name		: build.mk
+# Description		: This file accumulates sources of locks
+# Primary Author	: Akash Kollipara [[email protected]]
+# Organisation		: Cyancore Core-Team
+#
+
+LIBLOCKS_PATH	:= $(GET_PATH)
+LIB_OBJS	:=
+
+LIB		+= liblocks.a
+LIB_INCLUDE	+= $(LIBLOCKS_PATH)/include
+DEP_LIBS_ARG	+= -llocks
+
+
+DIR		:= $(LIBLOCKS_PATH)
+include mk/lib.mk

src/lib/liblocks/include/lock/bakerylock.h

@@ -0,0 +1,16 @@
+
+#pragma once
+#define _BAKERYLOCK_H_
+
+#include <stdbool.h>
+
+#pragma pack(1)
+typedef struct
+{
+	volatile uint8_t thread_count[N_CORES];
+	volatile bool protect[N_CORES];
+} bakerylock_t;
+#pragma pack()
+
+extern void bakerylock_acquire(bakerylock_t *);
+extern void bakerylock_release(bakerylock_t *);