yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2025-01-18 14:57:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add .syntax divided markers

Browse source 
Old GCC (pre-5?) natively use divided syntax, so we must put it back
after changing it.

More recent GCCs natively use unified syntax, and themselves are
surrounding our blocks with divided/unified directives for backwards
compatibility, so we don't need to restore for those.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
This commit is contained in:
Kevin Bracey 2020-10-07 16:53:00 +03:00
parent 045e576e02
commit 8b2014bdb6
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
tinycrypt/ecc.c
View file

@ -252,6 +252,7 @@ void uECC_vli_clear(uECC_word_t *vli)
"STMIA r0!,{r1,r2} \n\t"
"STMIA r0!,{r1,r2} \n\t"
"STMIA r0!,{r1,r2} \n\t"
".syntax divided \n\t"
: "+r" (r0)
: "r" (r1), "r" (r2)
: "memory"
@ -347,6 +348,7 @@ uECC_word_t uECC_vli_isZero(const uECC_word_t *vli)
"RSBS %[r1],%[r1],#0 \n\t" // C set if zero
"MOVS %[ret],#0 \n\t"
"ADCS %[ret],r0 \n\t"
".syntax divided \n\t"
: [ret]"=r" (ret), [r1]"=r" (r1), [r2]"=r" (r2), [r3]"=r" (r3)
: [vli]"[ret]" (vli)
: "cc", "memory"
@ -588,6 +590,7 @@ uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
"STMIA r0!,{r3,r4} \n\t"
"SBCS r0,r0 \n\t" // r0 := r0 - r0 - borrow = -borrow
"RSBS r0,r0,#0 \n\t" // r0 := borrow
".syntax divided \n\t"
: "+r" (r0), "+r" (r1), "+r" (r2)
:
: "r3", "r4", "r5", "r6", "cc", "memory"
@ -722,6 +725,7 @@ static uECC_word_t uECC_vli_add(uECC_word_t *result, const uECC_word_t *left,
"STMIA r0!,{r3,r4} \n\t"
"MOVS r0,#0 \n\t" // does not affect C flag
"ADCS r0,r0 \n\t" // r0 := 0 + 0 + C = carry
".syntax divided \n\t"
: "+r" (r0), "+r" (r1), "+r" (r2)
:
: "r3", "r4", "r5", "r6", "cc", "memory"
@ -951,6 +955,7 @@ static void muladd(uECC_word_t a, uECC_word_t b, uECC_word_t r[3])
"ADCS r5,r0 \n\t"
"SUBS r2,#12 \n\t"
"STMIA r2!,{r3,r4,r5} \n\t"
".syntax divided \n\t"
: "+r" (r0), "+r" (r1), "+r" (r2)
:
: "r3", "r4", "r5", "ip", "cc", "memory"