void
entry_init_public(void)
{
STATIC_ASSERT(ARMV7_BYTECODE_SIZE <= ARMV7_ENTRY_SIZE);
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
glvnd_byte_swap16((uint16_t *)BYTECODE_TEMPLATE,
entry_stub_size - TEMPLATE_OFFSETS_SIZE);
#endif
}
int InitEntrypoints(void)
{
if (entrypointBufferExec == NULL) {
void *writeBuf, *execBuf;
if (AllocExecPages(STUB_ENTRY_SIZE * GENERATED_ENTRYPOINT_MAX,
&writeBuf, &execBuf) != 0) {
return -1;
}
entrypointBufferWrite = (uint8_t *) writeBuf;
entrypointBufferExec = (uint8_t *) execBuf;
#if defined(USE_ARMV7_ASM)
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
glvnd_byte_swap16((uint16_t *)STUB_TEMPLATE, sizeof(STUB_TEMPLATE) - 4);
#endif
#endif
}
return 0;
}
static void patch_armv7_thumb_tsd(char *writeEntry,
const char *execEntry,
int stubSize)
{
#if defined(__arm__)
char *pSawVertex3fv = (char *)&__glXSawVertex3fv;
// Thumb bytecode
char tmpl[] = {
// ldr r0, 1f
0x48, 0x02,
// ldr r1, [r0]
0x68, 0x01,
// add r1, r1, #1
0xf1, 0x01, 0x01, 0x01,
// str r1, [r0]
0x60, 0x01,
// bx lr
0x47, 0x70,
// 1:
0x00, 0x00, 0x00, 0x00,
};
int offsetAddr = sizeof(tmpl) - 4;
if (stubSize < sizeof(tmpl)) {
return;
}
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
glvnd_byte_swap16((uint16_t *)tmpl, offsetAddr);
#endif
*((uint32_t *)(tmpl + offsetAddr)) = (uint32_t)pSawVertex3fv;
memcpy(writeEntry, tmpl, sizeof(tmpl));
__builtin___clear_cache((char *) execEntry, (char *) (execEntry + sizeof(tmpl)));
#else
assert(0); // Should not be calling this
#endif
}
