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fix arm core in smart_call

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obdev
2023-01-28 18:03:05 +08:00
committed by ob-robot
parent 0a9f32a5d1
commit 01c6b1fbea
1 changed files with 7 additions and 4 deletions
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11
deps/oblib/src/common/ob_smart_call.h vendored
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@ -45,9 +45,9 @@ inline int jump_call(void * arg_, int(*func_) (void*), void* stack_addr)
#elif defined(__aarch64__)
inline int jump_call(void * arg_, int(*func_) (void*), void* stack_addr)
{
register int64_t ret __asm__("x0") = 0; /* specify x0 assigned to ret */
register void* x0 __asm__("x0") = arg_; /* specify x0 assigned to arg_ */
int64_t ret = 0;
__asm__ __volatile__ (
"mov x0, %1\n\t"
"sub %3, %3, #0x20\n\t" /* reserve space for old sp on new stack, 0x10 for align */
"stp x29, x30, [%3, #0x10]\n\t" /* x29, x30 may not be stored in the innest function. */
"mov x9, sp\n\t" /* store SP in new stack */
@ -56,9 +56,10 @@ inline int jump_call(void * arg_, int(*func_) (void*), void* stack_addr)
"blr %2\n\t" /* run the second arg func_ */
"ldp x29, x30, [sp, #0x10]\n\t" /* restore x29, x30 */
"ldr x9, [sp, #0x00]\n\t" /* jump back to old stack */
"mov sp, x9\n\t"
"mov sp, x9\n\t"
"mov %0, x0\n\t"
:"=r" (ret)
:"r"(x0), "r"(func_), "r"(stack_addr)
:"r"(arg_), "r"(func_), "r"(stack_addr)
:"x9"
);
return (int) ret;
@ -86,7 +87,9 @@ inline int call_with_new_stack(void * arg_, int(*func_) (void*))
// To prevent the check_stack_overflow call before the jump
// Do not introduce other code between the two set_stackattr
set_stackattr(stack_addr, stack_size);
WEAK_BARRIER();
ret = jump_call(arg_, func_, (char *)stack_addr + stack_size);
WEAK_BARRIER();
set_stackattr(ori_stack_addr, ori_stack_size);
lib::g_stack_allocer.dealloc(stack_addr);
all_stack_size -= stack_size;