YJN/selfpatch-slr
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Selfpatch do not randomize fixed fields

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This commit is contained in:
York Jasper Niebuhr 2025-10-27 14:52:24 +01:00
parent d762007a7e
commit 49ebe6ed8e
3 changed files with 13 additions and 2 deletions
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1
pinpoint/stage0/separate_offset_pass.cpp
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@ -1,4 +1,3 @@
#include <iostream> // TODO
#include <stage0.h>
#include <functional>
#include <list>

2
selfpatch/src/spslr_program.h
View File

@ -4,6 +4,8 @@
#include <stdint.h>
#include <string.h>
#define SPSLR_FLAG_FIELD_FIXED 1
enum SPSLR_OPCODE {
SPSLR_TARGET, // uid, size, field count
SPSLR_FIELD, // offset, size, flags

12
selfpatch/src/targets.c
View File

@ -1,4 +1,5 @@
#include "targets.h"
#include "spslr_program.h"
#include <stdlib.h>
#include <time.h>
@ -17,7 +18,7 @@ struct Field {
uint32_t offset;
uint32_t size;
uint32_t flags; // TODO -> fixed flag!
uint32_t flags;
};
struct FinalField {
@ -177,6 +178,11 @@ static uint32_t target_get_shuffle_options(const struct Target* target, uint32_t
if (f->offset >= option_would_end)
break;
if (f->flags & SPSLR_FLAG_FIELD_FIXED) {
conflict = 1;
break;
}
// Could field be placed in origin?
uint32_t falign = field_alignment(f);
if (origin_region_ptr % falign != 0)
@ -248,6 +254,10 @@ static void target_shuffle_one(struct Target* target) {
return;
uint32_t origin = rand_uint32() % target->field_count;
if (target->fields[origin].flags & SPSLR_FLAG_FIELD_FIXED)
return;
uint32_t origin_alignment = field_alignment(&target->fields[origin]);
uint32_t max_options = target->size / origin_alignment;