Imbus/xv6-riscv-kernel
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Very important to give qemu memory through PHYSTOP :(
This commit is contained in:
Frans Kaashoek 2011-07-29 07:31:27 -04:00
parent dccb915282
commit 9aa0337dc1
20 changed files with 208 additions and 71 deletions
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11
bootmain.c
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@ -8,6 +8,7 @@
#include "types.h"
#include "elf.h"
#include "x86.h"
#include "memlayout.h"
#define SECTSIZE 512
@ -19,7 +20,7 @@ bootmain(void)
struct elfhdr *elf;
struct proghdr *ph, *eph;
void (*entry)(void);
uchar* va;
uchar* pa;
elf = (struct elfhdr*)0x10000; // scratch space
@ -34,15 +35,15 @@ bootmain(void)
ph = (struct proghdr*)((uchar*)elf + elf->phoff);
eph = ph + elf->phnum;
for(; ph < eph; ph++){
va = (uchar*)ph->va;
readseg(va, ph->filesz, ph->offset);
pa = (uchar*)ph->pa;
readseg(pa, ph->filesz, ph->offset);
if(ph->memsz > ph->filesz)
stosb(va + ph->filesz, 0, ph->memsz - ph->filesz);
stosb(pa + ph->filesz, 0, ph->memsz - ph->filesz);
}
// Call the entry point from the ELF header.
// Does not return!
entry = (void(*)(void))(elf->entry);
entry = (void(*)(void))(elf->entry & 0xFFFFFF);
entry();
}