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mach: Fix mach_setup_thread_impl with NULL stack_base

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This is notably necessary for running the gmon thread.
This commit is contained in:
Samuel Thibault 2023-05-22 17:47:49 +00:00
parent ea08d8dcea
commit ea752260cc
1 changed files with 7 additions and 7 deletions
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14
mach/setup-thread.c
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@ -33,7 +33,7 @@ mach_setup_thread_impl (task_t task, thread_t thread, int is_call,
kern_return_t error;
struct machine_thread_state ts;
mach_msg_type_number_t tssize = MACHINE_THREAD_STATE_COUNT;
vm_address_t stack;
vm_address_t stack, stack_start;
vm_size_t size;
int anywhere;
@ -51,22 +51,22 @@ mach_setup_thread_impl (task_t task, thread_t thread, int is_call,
*stack_size = size;
#ifdef STACK_GROWTH_DOWN
if (stack_base)
*stack_base = stack + __vm_page_size;
stack_start = stack + __vm_page_size;
#elif defined (STACK_GROWTH_UP)
if (stack_base)
*stack_base = stack;
stack_start = stack;
stack += size;
#else
#error stack direction unknown
#endif
if (stack_base)
*stack_base = stack_start;
if (is_call)
MACHINE_THREAD_STATE_SETUP_CALL (&ts, *stack_base, size, pc);
MACHINE_THREAD_STATE_SETUP_CALL (&ts, stack_start, size, pc);
else
{
MACHINE_THREAD_STATE_SET_PC (&ts, pc);
MACHINE_THREAD_STATE_SET_SP (&ts, *stack_base, size);
MACHINE_THREAD_STATE_SET_SP (&ts, stack_start, size);
}
/* Create the red zone. */