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This commit is contained in:
Justine Tunney 2020-12-01 03:43:40 -08:00
parent 3e4fd4b0ad
commit e44a0cf6f8
256 changed files with 23100 additions and 2294 deletions
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2
ape/lib/bootdr.S
View file

@ -17,7 +17,7 @@
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/macros.h"
#include "ape/macros.internal.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__

2
ape/lib/e820map.S
View file

@ -19,7 +19,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/lib/pc.h"
#include "ape/config.h"
#include "ape/macros.h"
#include "ape/macros.internal.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__

19
ape/lib/flattenhighmemory.c
View file

@ -20,7 +20,7 @@
#include "ape/config.h"
#include "ape/lib/pc.h"
#include "libc/bits/bits.h"
#include "libc/bits/safemacros.internal.h"
#include "libc/macros.h"
/**
* Virtualizes physical memory.
@ -33,27 +33,24 @@
*/
textreal void flattenhighmemory(struct SmapEntry *e820, struct PageTable *pml4t,
uint64_t *ptsp) {
struct SmapEntry *smap = e820;
struct SmapEntry *hole = e820;
uint64_t paddr = IMAGE_BASE_PHYSICAL;
uint64_t vaddr = IMAGE_BASE_VIRTUAL;
while (smap->size) {
uint64_t *entry, paddr, vaddr;
struct SmapEntry *smap, *hole;
for (smap = hole = e820, vaddr = IMAGE_BASE_VIRTUAL; smap->size; ++smap) {
while (smap->size && smap->type != kMemoryUsable) smap++;
paddr = roundup(max(paddr, smap->addr), PAGESIZE);
while (paddr < rounddown(smap->addr + smap->size, PAGESIZE)) {
paddr = ROUNDUP(MAX(IMAGE_BASE_PHYSICAL, smap->addr), PAGESIZE);
while (paddr < ROUNDDOWN(smap->addr + smap->size, PAGESIZE)) {
while (hole->size &&
(hole->type == kMemoryUsable || hole->addr + hole->size < paddr)) {
hole++;
}
if (paddr >= hole->addr && paddr < hole->addr + hole->size) {
paddr = roundup(hole->addr + hole->size, PAGESIZE);
paddr = ROUNDUP(hole->addr + hole->size, PAGESIZE);
} else {
uint64_t *entry = getpagetableentry(vaddr, 3, pml4t, ptsp);
entry = __getpagetableentry(vaddr, 3, pml4t, ptsp);
*entry = paddr | PAGE_V | PAGE_RW;
vaddr += 0x1000;
paddr += 0x1000;
}
}
smap++;
}
}

2
ape/lib/g_pml4t.S
View file

@ -19,7 +19,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/lib/pc.h"
#include "ape/config.h"
#include "ape/macros.h"
#include "ape/macros.internal.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__

2
ape/lib/g_ptsp.S
View file

@ -19,7 +19,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/lib/pc.h"
#include "ape/config.h"
#include "ape/macros.h"
#include "ape/macros.internal.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__

9
ape/lib/getpagetableentry.c
View file

@ -20,12 +20,13 @@
#include "ape/lib/pc.h"
#include "libc/assert.h"
textreal static uint64_t pushpagetable(uint64_t *ptsp) {
static textreal uint64_t __pushpagetable(uint64_t *ptsp) {
return (*ptsp -= PAGESIZE) | PAGE_V | PAGE_RW;
}
textreal uint64_t *getpagetableentry(int64_t vaddr, unsigned depth,
struct PageTable *pml4t, uint64_t *ptsp) {
textreal uint64_t *__getpagetableentry(int64_t vaddr, unsigned depth,
struct PageTable *pml4t,
uint64_t *ptsp) {
uint64_t *entry;
unsigned char shift;
assert(depth <= 3);
@ -36,7 +37,7 @@ textreal uint64_t *getpagetableentry(int64_t vaddr, unsigned depth,
entry = &pml4t->p[(vaddr >> shift) & 511];
if (!depth--) return entry;
shift -= 9;
if (!*entry) *entry = pushpagetable(ptsp);
if (!*entry) *entry = __pushpagetable(ptsp);
pml4t = (void *)(*entry & PAGE_TA);
}
}

2
ape/lib/kbiosdataarea.S
View file

@ -19,7 +19,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/lib/pc.h"
#include "ape/config.h"
#include "ape/macros.h"
#include "ape/macros.internal.h"
#include "ape/notice.inc"
.section .real,"ax",@progbits
.source __FILE__

2
ape/lib/mapimage.c
View file

@ -24,7 +24,7 @@
textreal static void __map_segment(uint64_t k, uint64_t a, uint64_t b) {
uint64_t *e;
for (; a < b; a += 0x1000) {
e = getpagetableentry(IMAGE_BASE_VIRTUAL + a, 3, &g_pml4t, &g_ptsp_xlm);
e = __getpagetableentry(IMAGE_BASE_VIRTUAL + a, 3, &g_pml4t, &g_ptsp_xlm);
*e = (IMAGE_BASE_REAL + a) | k;
}
}

2
ape/lib/pageunmap.c
View file

@ -22,7 +22,7 @@
textreal void pageunmap(int64_t vaddr) {
uint64_t *entry;
entry = getpagetableentry(vaddr, 3, &g_pml4t, &g_ptsp_xlm);
entry = __getpagetableentry(vaddr, 3, &g_pml4t, &g_ptsp_xlm);
*entry &= ~PAGE_V;
invlpg(vaddr);
}

3
ape/lib/pc.h
View file

@ -214,7 +214,8 @@ extern uint64_t g_ptsp_xlm;
void bootdr(char drive) noreturn;
void smapsort(struct SmapEntry *);
uint64_t *getpagetableentry(int64_t, unsigned, struct PageTable *, uint64_t *);
uint64_t *__getpagetableentry(int64_t, unsigned, struct PageTable *,
uint64_t *);
void flattenhighmemory(struct SmapEntry *, struct PageTable *, uint64_t *);
void pageunmap(int64_t);