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11 commits

Author SHA1 Message Date
Steffen Vogel
1346cdc2c4 added XD flag to map_region() 2013-10-21 08:52:11 +02:00
Steffen Vogel
9b47b3ef45 refactored paging code to be more universial and suitable for 64bit paging 2013-10-16 17:50:37 +02:00
Steffen Vogel
1fc3e40c4e fixed some typos, added comments and some code cleanup 2013-10-10 11:09:36 +02:00
Stefan Lankes
941a7006a4 backport of the 32bit code 2012-09-10 15:37:45 +02:00
Stefan Lankes
e2550fbdb2 avoid deadlock by disabling interrupts in map_region 
- the page_fault handler uses also map_region and implicitly its spinlock
- risk of a deadlock
 2012-08-01 21:12:55 +02:00
Stefan Lankes
8b91ff3fff remove some compiler warnings 2012-07-22 20:10:16 +02:00
Stefan Lankes
531556f53c remove warnings, optimize vm_alloc 2012-06-12 09:24:38 +02:00
Stefan Lankes
1e275732c5 simplify the APIC and GDT code 2012-06-10 23:40:22 +02:00
Stefan Lankes
609500a6d8 add additional output messages 2012-06-10 12:10:54 +02:00
Stefan Lankes
227cc19890 add alpha version of x64 support 
New features:
- support of kernel tasks in 64bit mode
- support of LwIP in 64bit mode

Missing features in 64bit mode
- user-level support
- APIC support => SMP support

To create a 64bit version of the MetalSVM kernel, the compiler flags “-m64 -mno-red-zone” and the assembler flags “-felf64” has to be used. Please use qemu-system-x86_64 as test platform.

Notice, metalsvm.elf is a 32bit ELF file. However, it contains (beside the startup code) only 64bit code. This is required because GRUB doesn’t boot 64bit ELF kernels. Therefore, for disassembling via objdump the flag  “-M x86-64” has to be used.
 2012-06-10 08:05:24 +02:00
Stefan Lankes
ed2186ee03 add init code, which jumps to 64bit mode and and calls main 2012-05-29 20:47:45 +02:00