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Moved all pager page-mapping routines to memory.c

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Added a new virtual address pool for contiguous virtual addresses for the pager.
This will help in mapping multi-page user buffers and files.
This commit is contained in:
Bahadir Balban
2008-11-21 21:05:42 +02:00
parent 2d5a08ff32
commit 7d38243dff
6 changed files with 113 additions and 23 deletions
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17
tasks/mm0/src/lib/elf/elf.c
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@@ -24,6 +24,13 @@ int elf_probe(struct elf_header *header)
return -1;
}
static inline void *pager_map_file_offset(struct vm_file *f, unsigned long f_offset)
{
void *page = pager_map_page(f, __pfn(f_offset));
return (void *)((unsigned long)page | (PAGE_MASK & f_offset));
}
/*
* Loading an ELF file:
*
@@ -59,8 +66,14 @@ int elf_parse_executable(struct tcb *task, struct vm_file *file,
}
/* Get the section header table */
sect_header = (struct elf_section_header *)
((void *)elf_header + elf_header->e_shoff);
if (__pfn(elf_header->e_shoff) > 0)
sect_header = pager_map_file_offset(file, elf_header->e_shoff);
else
sect_header = (struct elf_section_header *)
((void *)elf_header + elf_header->e_shoff);
/* Determine if we cross a page boundary during traversal */
if (elf_header->e_shentsize * elf_header->e_shnum > TILL_PAGE_ENDS(sect_header))
/*
* Sift through sections and copy their marks to tcb and efd