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arch: armv7-a: Fix arm_syscall for SYS_pthread_start

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Summary:
- I noticed that pthread always crashes when started
  if CONFIG_BUILD_KERNEL=y
- This commit fixes this issue

Impact:
- None

Testing:
- Tested with sabre-6quad:netknsh (not merged yet)

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
This commit is contained in:
Masayuki Ishikawa 2022-02-16 16:26:36 +09:00 committed by Petro Karashchenko
parent 41c95da594
commit b60b6120de
1 changed files with 3 additions and 3 deletions
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6
arch/arm/src/armv7-a/arm_syscall.c
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@ -302,9 +302,9 @@ uint32_t *arm_syscall(uint32_t *regs)
* CSPR = user mode
*/
regs[REG_PC] = regs[REG_R0];
regs[REG_R0] = regs[REG_R1];
regs[REG_R1] = regs[REG_R2];
regs[REG_PC] = regs[REG_R1];
regs[REG_R0] = regs[REG_R2];
regs[REG_R1] = regs[REG_R3];
cpsr = regs[REG_CPSR] & ~PSR_MODE_MASK;
regs[REG_CPSR] = cpsr | PSR_MODE_USR;