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Use the extended movx instruction instead of mov (#676)

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The following is from the MSP430X instruction set -

```
MOVX.W Move source word to destination word.

The source operand is copied to the destination. The source operand is
not affected. Both operands may be located in the full address space.
```

The movx instruction allows both the operands to be located in the full
address space and therefore, works with large data model as well.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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Gaurav-Aggarwal-AWS 2023-05-15 23:29:04 +05:30 committed by GitHub
parent a07f649bd5
commit 97434a4e0c
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1 changed files with 2 additions and 2 deletions
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portable/CCS/MSP430X/portext.asm
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@ -48,7 +48,7 @@ portSAVE_CONTEXT .macro
;Save the remaining registers. ;Save the remaining registers.
pushm_x #12, r15 pushm_x #12, r15
mov.w &usCriticalNesting, r14 movx.w &usCriticalNesting, r14
push_x r14 push_x r14
mov_x &pxCurrentTCB, r12 mov_x &pxCurrentTCB, r12
mov_x sp, 0( r12 ) mov_x sp, 0( r12 )
@ -60,7 +60,7 @@ portRESTORE_CONTEXT .macro
mov_x &pxCurrentTCB, r12 mov_x &pxCurrentTCB, r12
mov_x @r12, sp mov_x @r12, sp
pop_x r15 pop_x r15
mov.w r15, &usCriticalNesting movx.w r15, &usCriticalNesting
popm_x #12, r15 popm_x #12, r15
nop nop
pop.w sr pop.w sr