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#include "Rts.h"
#include "plt.h"
#if defined(aarch64_HOST_ARCH)
#if defined(OBJFORMAT_MACHO)
#include <mach/machine.h>
#include <mach-o/fat.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <mach-o/reloc.h>
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
#define _makeStub ADD_SUFFIX(makeStub)
#define needStubForRel ADD_SUFFIX(needStubForRel)
unsigned
numberOfStubsForSection( ObjectCode *oc, unsigned sectionIndex) {
unsigned n = 0;
MachOSection *section = &oc->info->macho_sections[sectionIndex];
MachORelocationInfo *relocation_info = (MachORelocationInfo*)(oc->image + section->reloff);
if(section->size > 0)
for(size_t i = 0; i < section->nreloc; i++)
if(needStubForRel(&relocation_info[i]))
n += 1;
return n;
}
bool
findStub(Section * section,
void* * addr,
uint8_t flags) {
for(Stub * s = section->info->stubs; s != NULL; s = s->next) {
if( s->target == *addr
&& s->flags == flags) {
*addr = s->addr;
return EXIT_SUCCESS;
}
}
return EXIT_FAILURE;
}
bool
makeStub(Section * section,
void* * addr,
uint8_t flags) {
Stub * s = (Stub *)stgCallocBytes(sizeof(Stub), 1, "makeStub");
CHECK(s != NULL);
s->target = *addr;
s->flags = flags;
s->next = NULL;
s->addr = (uint8_t *)section->info->stub_offset + 8
+ STUB_SIZE * section->info->nstubs;
if((*_makeStub)(s))
return EXIT_FAILURE;
if(section->info->stubs == NULL) {
CHECK(section->info->nstubs == 0);
/* no stubs yet, let's just create this one */
section->info->stubs = s;
} else {
Stub * tail = section->info->stubs;
while(tail->next != NULL) tail = tail->next;
tail->next = s;
}
section->info->nstubs += 1;
*addr = s->addr;
return EXIT_SUCCESS;
}
void
freeStubs(Section * section) {
if(NULL == section || section->info->nstubs == 0)
return;
Stub * last = section->info->stubs;
while(last->next != NULL) {
Stub * t = last;
last = last->next;
free(t);
}
section->info->stubs = NULL;
section->info->nstubs = 0;
}
#endif // OBJECTFORMAT_MACHO
#endif // aarch64_HOST_ARCH
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