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arm: core: aarch64: save switch_handle

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Save old_thread to switch_handle for wait_for_thread usage

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2020-11-09 15:41:13 +08:00 • committed by Anas Nashif
commit 6182330fc3
1 changed files with 9 additions and 2 deletions
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11
arch/arm/core/aarch64/switch.S
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@ -38,14 +38,21 @@ SECTION_FUNC(TEXT, z_arm64_context_switch)
add x2, x1, x3 add x2, x1, x3
/* Save the current SP */ /* Save the current SP */
mov x1, sp mov x4, sp
stp x19, x20, [x2, ___callee_saved_t_x19_x20_OFFSET] stp x19, x20, [x2, ___callee_saved_t_x19_x20_OFFSET]
stp x21, x22, [x2, ___callee_saved_t_x21_x22_OFFSET] stp x21, x22, [x2, ___callee_saved_t_x21_x22_OFFSET]
stp x23, x24, [x2, ___callee_saved_t_x23_x24_OFFSET] stp x23, x24, [x2, ___callee_saved_t_x23_x24_OFFSET]
stp x25, x26, [x2, ___callee_saved_t_x25_x26_OFFSET] stp x25, x26, [x2, ___callee_saved_t_x25_x26_OFFSET]
stp x27, x28, [x2, ___callee_saved_t_x27_x28_OFFSET] stp x27, x28, [x2, ___callee_saved_t_x27_x28_OFFSET]
stp x29, x1, [x2, ___callee_saved_t_x29_sp_OFFSET] stp x29, x4, [x2, ___callee_saved_t_x29_sp_OFFSET]
#ifdef CONFIG_SMP
/* save old thread into switch handle which is required by
* wait_for_switch
*/
str x1, [x1, #___thread_t_switch_handle_OFFSET]
#endif
#ifdef CONFIG_THREAD_LOCAL_STORAGE #ifdef CONFIG_THREAD_LOCAL_STORAGE
/* Grab the TLS pointer */ /* Grab the TLS pointer */