M2351: Support GCC and IAR #13643
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M2351: Support GCC and IAR #13643
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Ths is to prepare for supporting GCC/IAR officially.
1. Re-organize to make clear all targets/toolchains support in single startup file 2. Inline assembly syntax is limited, esp. on IAR. Try paving the way for accessing external symbols still in inline assembly instead of re-write in assembly. 3. Update GCC C run-time sequence to fit future GCC script file.
1. Refine memory partition files to support different toolchains 2. Exclude NSC region from flash IAP range
Separate out secure/non-secure ARMC6 scatter files instead of merging them
1. Enable GCC support on non-secure targets 2. Disable GCC support on secure targets becasue of GCC bug (as of 9-2019-q4-major): In non-secure entry function, callee-saved registers must be restored, but they are incorrectly cleared at optimization level "Os".
1. Enable IAR on non-secure targets
2. Disable IAR on secure targets because:
(1) IAR toolchain bug: As of IAR 8.32, cmse_nonsecure_caller() is not always inlined.
(2) TFM hasn't supported IAR yet.
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@ccli8, thank you for your changes. |
0xc0170
approved these changes
Sep 29, 2020
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CI started |
Test run: SUCCESSSummary: 10 of 10 test jobs passed |
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Summary of changes
This PR is backport of #12353 and #12366 to
mbed-os-5.15branch. It has the following modifications on M2351:NOTE1: Disable GCC support on secure targets because of GCC bug (as of 9-2019-q4-major): In non-secure entry function, callee-saved registers must be restored, but they are incorrectly cleared at optimization level Os.
NOTE2: Disable IAR on secure targets because of IAR toolchain bug (as of IAR 8.32):
cmse_nonsecure_caller()is not always inlined.Pull request type
Test results