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Mint APE Loader v1.5

Browse source 
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi
users can run programs like redbean, without the executable needing
to modify itself. Progress has also slipped into this change on the
issue of making progress better conforming to user expectations and
industry standards regarding which symbols we're allowed to declare
This commit is contained in:
Justine Tunney 2023-07-26 13:54:49 -07:00
parent 6843150e0c
commit 7e0a09feec
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
510 changed files with 1783 additions and 1483 deletions
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47
libc/intrin/mman.greg.c
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@ -54,14 +54,14 @@ struct ReclaimedPage {
/**
* Allocates new page of physical memory.
*/
noasan texthead uint64_t __new_page(struct mman *mm) {
dontasan texthead uint64_t __new_page(struct mman *mm) {
uint64_t p = mm->frp;
if (p != NOPAGE) {
uint64_t q;
struct ReclaimedPage *rp = (struct ReclaimedPage *)(BANE + p);
_unassert(p == (p & PAGE_TA));
unassert(p == (p & PAGE_TA));
q = rp->next;
_unassert(q == (q & PAGE_TA) || q == NOPAGE);
unassert(q == (q & PAGE_TA) || q == NOPAGE);
mm->frp = q;
return p;
}
@ -81,8 +81,8 @@ noasan texthead uint64_t __new_page(struct mman *mm) {
* Returns pointer to page table entry for page at virtual address.
* Additional page tables are allocated if needed as a side-effect.
*/
noasan textreal uint64_t *__get_virtual(struct mman *mm, uint64_t *t,
int64_t vaddr, bool maketables) {
dontasan textreal uint64_t *__get_virtual(struct mman *mm, uint64_t *t,
int64_t vaddr, bool maketables) {
uint64_t *e, p;
unsigned char h;
for (h = 39;; h -= 9) {
@ -101,7 +101,7 @@ noasan textreal uint64_t *__get_virtual(struct mman *mm, uint64_t *t,
/**
* Sorts, rounds, and filters BIOS memory map.
*/
static noasan textreal void __normalize_e820(struct mman *mm, uint64_t top) {
static dontasan textreal void __normalize_e820(struct mman *mm, uint64_t top) {
uint64_t a, b;
uint64_t x, y;
unsigned i, j, n;
@ -134,9 +134,10 @@ static noasan textreal void __normalize_e820(struct mman *mm, uint64_t top) {
/**
* Identity maps an area of physical memory to its negative address.
*/
noasan textreal uint64_t *__invert_memory_area(struct mman *mm, uint64_t *pml4t,
uint64_t ps, uint64_t size,
uint64_t pte_flags) {
dontasan textreal uint64_t *__invert_memory_area(struct mman *mm,
uint64_t *pml4t, uint64_t ps,
uint64_t size,
uint64_t pte_flags) {
uint64_t pe = ps + size, p, *m = NULL;
ps = ROUNDDOWN(ps, 4096);
pe = ROUNDUP(pe, 4096);
@ -152,7 +153,7 @@ noasan textreal uint64_t *__invert_memory_area(struct mman *mm, uint64_t *pml4t,
/**
* Increments the reference count for a page of physical memory.
*/
noasan void __ref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
dontasan void __ref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
uint64_t *m, e;
m = __invert_memory_area(mm, pml4t, p, 4096, PAGE_RW | PAGE_XD);
if (m) {
@ -167,8 +168,8 @@ noasan void __ref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
/**
* Increments the reference counts for an area of physical memory.
*/
noasan void __ref_pages(struct mman *mm, uint64_t *pml4t, uint64_t ps,
uint64_t size) {
dontasan void __ref_pages(struct mman *mm, uint64_t *pml4t, uint64_t ps,
uint64_t size) {
uint64_t p = ROUNDDOWN(ps, 4096), e = ROUNDUP(ps + size, 4096);
while (p != e) {
__ref_page(mm, pml4t, p);
@ -179,9 +180,9 @@ noasan void __ref_pages(struct mman *mm, uint64_t *pml4t, uint64_t ps,
/**
* Reclaims a page of physical memory for later use.
*/
static noasan void __reclaim_page(struct mman *mm, uint64_t p) {
static dontasan void __reclaim_page(struct mman *mm, uint64_t p) {
struct ReclaimedPage *rp = (struct ReclaimedPage *)(BANE + p);
_unassert(p == (p & PAGE_TA));
unassert(p == (p & PAGE_TA));
rp->next = mm->frp;
mm->frp = p;
}
@ -191,7 +192,7 @@ static noasan void __reclaim_page(struct mman *mm, uint64_t p) {
* page if there are no virtual addresses (excluding the negative space)
* referring to it.
*/
noasan void __unref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
dontasan void __unref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
uint64_t *m, e;
m = __invert_memory_area(mm, pml4t, p, 4096, PAGE_RW | PAGE_XD);
if (m) {
@ -207,7 +208,8 @@ noasan void __unref_page(struct mman *mm, uint64_t *pml4t, uint64_t p) {
/**
* Identity maps all usable physical memory to its negative address.
*/
static noasan textreal void __invert_memory(struct mman *mm, uint64_t *pml4t) {
static dontasan textreal void __invert_memory(struct mman *mm,
uint64_t *pml4t) {
uint64_t i, j, *m, p, pe;
for (i = 0; i < mm->e820n; ++i) {
uint64_t ps = mm->e820[i].addr, size = mm->e820[i].size;
@ -230,8 +232,8 @@ static noasan textreal void __invert_memory(struct mman *mm, uint64_t *pml4t) {
: "i"(offsetof(type, member))); \
} while (0)
noasan textreal void __setup_mman(struct mman *mm, uint64_t *pml4t,
uint64_t top) {
dontasan textreal void __setup_mman(struct mman *mm, uint64_t *pml4t,
uint64_t top) {
export_offsetof(struct mman, pc_drive_base_table);
export_offsetof(struct mman, pc_drive_last_sector);
export_offsetof(struct mman, pc_drive_last_head);
@ -257,8 +259,8 @@ noasan textreal void __setup_mman(struct mman *mm, uint64_t *pml4t,
/**
* Maps APE-defined ELF program headers into memory and clears BSS.
*/
noasan textreal void __map_phdrs(struct mman *mm, uint64_t *pml4t, uint64_t b,
uint64_t top) {
dontasan textreal void __map_phdrs(struct mman *mm, uint64_t *pml4t, uint64_t b,
uint64_t top) {
struct Elf64_Phdr *p;
uint64_t i, f, v, m, *e;
extern char ape_phdrs[] __attribute__((__weak__));
@ -292,8 +294,9 @@ noasan textreal void __map_phdrs(struct mman *mm, uint64_t *pml4t, uint64_t b,
* Reclaims memory pages which were used at boot time but which can now be
* made available for the application.
*/
noasan textreal void __reclaim_boot_pages(struct mman *mm, uint64_t skip_start,
uint64_t skip_end) {
dontasan textreal void __reclaim_boot_pages(struct mman *mm,
uint64_t skip_start,
uint64_t skip_end) {
uint64_t p = mm->frp, q = IMAGE_BASE_REAL, i, n = mm->e820n, b, e;
for (i = 0; i < n; ++i) {
b = mm->e820[i].addr;