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This commit is contained in:
Tiberiu Chibici
2021-09-14 19:01:13 +03:00
parent 6faff6dedb
commit f551ca29ce
33 changed files with 1245 additions and 0 deletions
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106
exp/Memory manager/.cproject Normal file
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?fileVersion 4.0.0?>
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</inputType>
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<folderInfo id="cdt.managedbuild.config.gnu.cygwin.exe.release.1614407804." name="/" resourcePath="">
<toolChain id="cdt.managedbuild.toolchain.gnu.cygwin.exe.release.1117383569" name="Cygwin GCC" superClass="cdt.managedbuild.toolchain.gnu.cygwin.exe.release">
<targetPlatform id="cdt.managedbuild.target.gnu.platform.cygwin.exe.release.1496680917" name="Debug Platform" superClass="cdt.managedbuild.target.gnu.platform.cygwin.exe.release"/>
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</inputType>
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exp/Memory manager/Debug/main.d Normal file
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main.d main.o: ../main.c ../mem.h
../mem.h:

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43
exp/Memory manager/Debug/makefile Normal file
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################################################################################
# Automatically-generated file. Do not edit!
################################################################################
-include ../makefile.init
RM := rm -rf
# All of the sources participating in the build are defined here
-include sources.mk
-include subdir.mk
-include objects.mk
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(strip $(C_DEPS)),)
-include $(C_DEPS)
endif
endif
-include ../makefile.defs
# Add inputs and outputs from these tool invocations to the build variables
# All Target
all: Memory\ manager.exe
# Tool invocations
Memory\ manager.exe: $(OBJS) $(USER_OBJS)
@echo 'Building target: $@'
@echo 'Invoking: Cygwin C Linker'
gcc -o "Memory manager.exe" $(OBJS) $(USER_OBJS) $(LIBS)
@echo 'Finished building target: $@'
@echo ' '
# Other Targets
clean:
-$(RM) $(OBJS)$(C_DEPS)$(EXECUTABLES) "Memory manager.exe"
-@echo ' '
.PHONY: all clean dependents
.SECONDARY:
-include ../makefile.targets

3
exp/Memory manager/Debug/memory.d Normal file
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memory.d memory.o: ../memory.c ../mem.h
../mem.h:

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8
exp/Memory manager/Debug/objects.mk Normal file
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################################################################################
# Automatically-generated file. Do not edit!
################################################################################
USER_OBJS :=
LIBS :=

17
exp/Memory manager/Debug/sources.mk Normal file
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################################################################################
# Automatically-generated file. Do not edit!
################################################################################
O_SRCS :=
C_SRCS :=
S_UPPER_SRCS :=
OBJ_SRCS :=
ASM_SRCS :=
OBJS :=
C_DEPS :=
EXECUTABLES :=
# Every subdirectory with source files must be described here
SUBDIRS := \
. \

27
exp/Memory manager/Debug/subdir.mk Normal file
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################################################################################
# Automatically-generated file. Do not edit!
################################################################################
# Add inputs and outputs from these tool invocations to the build variables
C_SRCS += \
../main.c \
../memory.c
OBJS += \
./main.o \
./memory.o
C_DEPS += \
./main.d \
./memory.d
# Each subdirectory must supply rules for building sources it contributes
%.o: ../%.c
@echo 'Building file: $<'
@echo 'Invoking: Cygwin C Compiler'
gcc -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -o "$@" "$<"
@echo 'Finished building: $<'
@echo ' '

12
exp/Memory manager/Memory manager.exe.stackdump Normal file
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Exception: STATUS_ACCESS_VIOLATION at eip=004016B3
eax=00A01CB0 ebx=009A0000 ecx=00403100 edx=FFF9E34C esi=00A01CAA edi=00000000
ebp=0022CB18 esp=0022CAF0 program=C:\Users\Tiberiu\workspace\osdev\Memory manager\Debug\Memory manager.exe, pid 5948, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame Function Args
0022CB18 004016B3 (00000050, 00403100, 0000000A, 6112C040)
0022CB38 00401376 (00000002, 0022CB60, 00000000, 00000000)
0022CCA8 00401259 (00403100, 00001000, 00000000, 00401415)
0022CCD8 0040143F (00000001, 009C8608, 009C8508, 00008000)
0022CD68 61007038 (00000000, 0022CDA4, 61006980, 7FFDC000)
End of stack trace

82
exp/Memory manager/PROJEC~1 Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Memory manager</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
<triggers>clean,full,incremental,</triggers>
<arguments>
<dictionary>
<key>?name?</key>
<value></value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.append_environment</key>
<value>true</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.autoBuildTarget</key>
<value>all</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.buildArguments</key>
<value></value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.buildCommand</key>
<value>make</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.buildLocation</key>
<value>${workspace_loc:/Memory manager/Debug}</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.cleanBuildTarget</key>
<value>clean</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.contents</key>
<value>org.eclipse.cdt.make.core.activeConfigSettings</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.enableAutoBuild</key>
<value>false</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.enableCleanBuild</key>
<value>true</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.enableFullBuild</key>
<value>true</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.fullBuildTarget</key>
<value>all</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.stopOnError</key>
<value>true</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.useDefaultBuildCmd</key>
<value>true</value>
</dictionary>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
<triggers>full,incremental,</triggers>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.cdt.core.cnature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
</natures>
</projectDescription>

33
exp/Memory manager/main.c Normal file
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/*
* main.c
*
* Created on: Aug 24, 2011
* Author: Tiberiu
*/
#include <stdio.h>
#include <stdlib.h>
#include "mem.h"
void print_memmap()
{
uint32 i;
printf("memory map:\n");
for (i = 0; i <= TotalFrames>>5; i++)
printf("0x%x ", FrameMap[i]);
printf("\n");
}
int main(int argc, char **argv) {
MemPhInitialize(1024);
MemPhReserveFrames(0, 0x20000);
MemPhReserveFrames(0xF0000, 0x10000);
// Find a free frame
uint32 i;
for (i = 0; i < 10; i++) MemPhAllocFrame(0,0);
return 0;
}

37
exp/Memory manager/mem.h Normal file
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/*
* ord-arr.h
*
* Created on: Aug 24, 2011
* Author: Tiberiu
*/
#ifndef ORD_ARR_H_
#define ORD_ARR_H_
#include <stdio.h>
typedef unsigned int uint32;
typedef unsigned char uint8;
#define Log(...) { printf(__VA_ARGS__); }
#define Error(...) { fprintf(stderr, __VA_ARGS__); }
#define Panic(...) { printf("[PANIC] Kernel panic: "); printf(__VA_ARGS__); }
#define LogMem(...) { Log("[MemLog] "); Log(__VA_ARGS__); }
#define ErrorMem(...) { Error("[MemErr] "); Error(__VA_ARGS__); }
extern uint32* FrameMap;
extern uint32 TotalFrames;
extern uint32 TotalMemory;
extern void ConvertIndexToFrame (uint32 index, uint32* address, uint32* offset);
extern uint32 ConvertFrameToIndex (uint32 address, uint32 offset);
extern void MemPhSetFrame (uint32 frame, uint8 value);
extern uint32 MemPhGetFrame (uint32 frame);
extern uint32 MemPhFindFreeFrame();
extern void MemPhAllocFrame(uint8 isKernel, uint8 isWriteable);
extern void MemPhInitialize(uint32 SystemMemoryKb);
extern void MemPhReserveFrames (uint32 address, uint32 length);
#endif /* ORD_ARR_H_ */

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exp/Memory manager/memory.c Normal file
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/*
* mem-phys.c
*
* Created on: Aug 27, 2011
* Author: Tiberiu
*/
#include <stdlib.h>
#include "mem.h"
uint32* FrameMap;
uint32 TotalFrames;
uint32 TotalMemory;
void ConvertIndexToFrame (uint32 index, uint32* address, uint32* offset)
{
*address = (index >> 5);
*offset = index & 0x1f;
}
uint32 ConvertFrameToIndex (uint32 address, uint32 offset)
{
return (address<<5) | offset;
}
void MemPhSetFrame (uint32 frame, uint8 value)
{
uint32 addr, off;
ConvertIndexToFrame(frame, &addr, &off);
if (value) FrameMap[addr] |= 1<<off;
else FrameMap[addr] &= ~(1<<off);
}
uint32 MemPhGetFrame (uint32 frame)
{
uint32 addr, off;
ConvertIndexToFrame(frame, &addr, &off);
return FrameMap[addr] & (1<<off);
}
uint32 MemPhFindFreeFrame()
{
uint32 addr, pos;
for (addr = 0; addr < TotalFrames >> 5; addr++)
if (FrameMap[addr] != 0xffffffff)
{
for (pos = 0; (FrameMap[addr] & (1<<pos)) != 0; pos++) ;
return ConvertFrameToIndex(addr, pos);
}
return 0;
}
void MemPhAllocFrame(uint8 isKernel, uint8 isWriteable)
{
//if (page->Frame != 0) return;
uint32 free = MemPhFindFreeFrame();
if (!free) return;
LogMem("Physical: allocated frame %u.\n", free);
MemPhSetFrame(free, 1);
/*page->Present = 1;
page->User = (isKernel) ? 0 : 1;
page->Writeable = (isWriteable) ? 1 : 0;
page->Frame = free;*/
}
/*void MemPhFreeFrame()//Page* page)
{
uint32 frame = page->Frame;
if (!frame) return;
MemPhSetFrame(frame, 0);
page->Frame = 0;
}*/
void MemPhInitialize(uint32 SystemMemoryKb)
{
LogMem("Starting physical memory manager...\n");
TotalFrames = SystemMemoryKb >> 2;
TotalMemory = SystemMemoryKb;
FrameMap = (uint32*) malloc(sizeof(uint32) * (1 + (TotalFrames>>5)));
memset(FrameMap, 0, sizeof(uint32) * (1 + (TotalFrames>>5)));
LogMem("Started ok!, found %ukb total_frames=%u\n", SystemMemoryKb, TotalFrames);
}
void MemPhReserveFrames (uint32 address, uint32 length)
{
address >>= 12;
length = (length>>12) + ((length & 0xfff) > 0);
uint32 end = address + length;
for (; address < end && address < TotalFrames ; address++)
MemPhSetFrame(address, 1);
}