rename common to src

+ I keep starting to type src and wondering why autocomplete won't work,
  I guess src is just uncounciously a better name

1 files changed, 0 insertions, 156 deletions

diff --git a/common/elf.c b/common/elf.c
deleted file mode 100644
index da47502..0000000
--- a/common/elf.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/* SPDX-License-Identifier: copyleft-next-0.3.1 */
-/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
-
-/**
- * @file elf.c
- * Handle elf executables, set up requested memory mappings etc.
- */
-
-#include <kmi/elf.h>
-#include <kmi/vmem.h>
-#include <kmi/bits.h>
-#include <kmi/string.h>
-#include <kmi/assert.h>
-
-/**
- * Convert ELF flags to page flags.
- *
- * @param elf_flags ELF flags to convert.
- * @return Corresponding page flags.
- */
-static uint8_t __elf_to_uvflags(uint8_t elf_flags)
-{
-	uint8_t uvflags = VM_V | VM_U;
-	if (elf_flags & PF_X)
-		uvflags |= VM_X;
-
-	if (elf_flags & PF_W)
-		uvflags |= VM_W;
-
-	if (elf_flags & PF_R)
-		uvflags |= VM_R;
-
-	return uvflags;
-}
-
-/**
- * Map ELF executable.
- *
- * @param t Thread space to work in.
- * @param bin Address of binary to map.
- * @param ei_c ELF identity class.
- * @param phstart Program header start.
- * @param phnum Number of program header entries.
- * @param phsize Size of page header entry.
- */
-static void __map_exec(struct tcb *t, vm_t bin, uint8_t ei_c, vm_t phstart,
-                       size_t phnum, size_t phsize)
-{
-	hard_assert(t && is_proc(t), RETURN_VOID);
-
-	/** \todo take alignment into consideration? */
-	/** \todo take overlapping memory regions into account, probably mostly
-	 * by keeping track of previously allocated area and seeing if the
-	 * segment fits into it */
-	/** \todo check if p_memsz is larger than p_filesz, the segment should be
-	 * filled with zeroes. */
-	/** \todo in general, make this a lot more clean. */
-	/* useful bit of info: all segments are sorted in ascending order of p_vaddr */
-	vm_t runner = phstart;
-	vmflags_t default_flags = VM_V | VM_R | VM_W | VM_X | VM_U;
-	for (size_t i = 0; i < phnum; ++i, runner += phsize) {
-		if (program_header_prop(ei_c, runner, p_type) != PT_LOAD)
-			continue;
-
-		vm_t va = program_header_prop(ei_c, runner, p_vaddr);
-		size_t vsz = program_header_prop(ei_c, runner, p_memsz);
-
-		vm_t start = alloc_fixed_region(&t->sp_r, va, vsz, &vsz,
-		                                default_flags);
-		if (!start)
-			return; /* out of memory or something */
-
-		uint8_t elf_flags = program_header_prop(ei_c, runner, p_flags);
-		uint8_t uvflags = __elf_to_uvflags(elf_flags);
-
-		map_allocd_region(t->proc.vmem, start, vsz, default_flags, 0);
-		memset((void *)start, 0, vsz);
-
-		vm_t vo = bin + program_header_prop(ei_c, runner, p_offset);
-		vm_t vfz = program_header_prop(ei_c, runner, p_filesz);
-		memcpy((void *)va, (void *)vo, vfz);
-
-		/* skip while testing
-		 * \todo: also fix, this modifies only the first region. Create new
-		 * function?
-		 *
-		   pm_t paddr = 0;
-		   stat_vpage(t->b_r, va, &paddr, 0, 0);
-		   mod_vpage(t->b_r, va, paddr, uvflags);
-		 */
-	}
-}
-
-/**
- * Map ELF dynamic object.
- *
- * @param t Thread space to work in.
- * @param bin Address of binary to map.
- * @param ei_c ELF identity class.
- * @param phstart Program header start.
- * @param phnum Number of program header entries.
- * @param phsize Size of page header entry.
- * @return Base of dynamic mapping.
- */
-static vm_t __map_dyn(struct tcb *t, vm_t bin, uint8_t ei_c, vm_t phstart,
-                      size_t phnum, size_t phsize)
-{
-	/** \todo this path should only be taken when no PT_INTERP is defined, as
-	 * making sure ld is loaded should be done in userspace. Maybe a bit
-	 * hacky, I know.*/
-}
-
-/**
- * Map binary and optional interpreter.
- *
- * \todo Implement interpeter handling.
- *
- * @param t Thread space to work in.
- * @param ei_c ELF identity class. (Of binary, should do one for interp?)
- * @param elf ELF binary.
- * @param interp ELF interpeter.
- * @return Entry address.
- */
-static vm_t __prepare_proc(struct tcb *t, uint8_t ei_c, vm_t elf, vm_t interp)
-{
-	short e_type = elf_header_prop(ei_c, elf, e_type);
-	if (e_type != ET_DYN && e_type != ET_EXEC)
-		return 0;
-
-	vm_t phstart = ptradd(elf, elf_header_prop(ei_c, elf, e_phoff));
-	size_t phnum = elf_header_prop(ei_c, elf, e_phnum);
-	size_t phsize = elf_header_prop(ei_c, elf, e_phentsize);
-
-	vm_t entry = elf_header_prop(ei_c, elf, e_entry);
-	if (e_type == ET_EXEC) {
-		__map_exec(t, elf, ei_c, phstart, phnum, phsize);
-		return entry;
-	} else {
-		vm_t o = __map_dyn(t, elf, ei_c, phstart, phnum, phsize);
-		return o + entry;
-	}
-}
-
-/* sets up all memory regions etc, returns the entry address */
-vm_t load_elf(struct tcb *t, vm_t elf, vm_t interp)
-{
-	struct elf_ident *i = (struct elf_ident *)elf;
-	if (i->ei_magic != cpu_to_be32(EI_MAGIC))
-		return 0;
-
-	if (i->ei_class != ELFCLASS32 && i->ei_class != ELFCLASS64)
-		return 0;
-
-	/* more sanity checks? */
-	return __prepare_proc(t, i->ei_class, elf, interp);
-}