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add hints for mips registers that may need restore #1949

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Jan 31, 2019
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add hints for mips registers that may need restore #1949

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2f70e4b
add hints for mips registers that may need restore
jmartin-tech Aug 14, 2018
a661be3
Add fix of #1722 to ChangLog
jmartin-tech Jan 14, 2019
d25fd8d
MIPS register hints without `$` for compatibility
jmartin-tech Jan 15, 2019
d20a0e2
update ChangLog per comments
jmartin-tech Jan 15, 2019
801217e
update ChangLog credit
jmartin-tech Jan 16, 2019
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4 changes: 4 additions & 0 deletions ChangeLog
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Expand Up @@ -11,6 +11,10 @@ Bugfix
previously lead to a stack overflow on constrained targets.
* Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
in the header files, which missed the precompilation check. #971
* Extend register cleanup needed on MIPS assembly optimizations. Adds hi, lo
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registers hints to the compiler for usage with the embedded MIPS assembly.
Reported in #1722, fix suggested by @aurel32 and submitted
by Jeffrey Martin, #1949.
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= mbed TLS 2.16.0 branch released 2018-12-21

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2 changes: 1 addition & 1 deletion include/mbedtls/bn_mul.h
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Expand Up @@ -750,7 +750,7 @@
"sw $10, %2 \n\t" \
: "=m" (c), "=m" (d), "=m" (s) \
: "m" (s), "m" (d), "m" (c), "m" (b) \
: "$9", "$10", "$11", "$12", "$13", "$14", "$15" \
: "$9", "$10", "$11", "$12", "$13", "$14", "$15", "lo", "hi" \
);

#endif /* MIPS */
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