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[Backport v4.1-branch] arch: arm: cortex_m: Force literal pool placement in inline asm block #92827

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Merged
merged 1 commit into from
Jul 25, 2025
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[Backport v4.1-branch] arch: arm: cortex_m: Force literal pool placement in inline asm block #92827

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4 changes: 4 additions & 0 deletions arch/arm/core/cortex_m/thread.c
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Original file line number Diff line number Diff line change
Expand Up @@ -557,6 +557,8 @@ void arch_switch_to_main_thread(struct k_thread *main_thread, char *stack_ptr,
"ldr r4, =z_thread_entry\n"
/* We don’t intend to return, so there is no need to link. */
"bx r4\n"
/* Force a literal pool placement for the addresses referenced above */
".ltorg\n"
:
: "r"(_main), "r"(stack_ptr)
: "r0", "r1", "r2", "r3", "r4", "ip", "lr", "memory");
Expand Down Expand Up @@ -623,6 +625,8 @@ FUNC_NORETURN void z_arm_switch_to_main_no_multithreading(k_thread_entry_t main_
"ldr r0, =arch_irq_lock_outlined\n"
"blx r0\n"
"loop: b loop\n\t" /* while (true); */
/* Force a literal pool placement for the addresses referenced above */
".ltorg\n"
:
: [_p1] "r"(p1), [_p2] "r"(p2), [_p3] "r"(p3), [_psp] "r"(psp),
[_main_entry] "r"(main_entry)
Expand Down
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