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divmodqi.S: Return 0x00 by default for div by 0.

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* config/rl78/divmodqi.S: Return 0x00 by default for div by 0.
* config/rl78/divmodsi.S: Update return register to r8.
* config/rl78/divmodhi.S: Update return register to r8,r9.
Branch to main_loop_done_himode to pop registers before return.

From-SVN: r228926
This commit is contained in:
Kaushik Phatak 2015-10-16 21:47:07 +00:00 committed by DJ Delorie
parent 0d3a9fe776
commit 793aa938bd
4 changed files with 18 additions and 2 deletions
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7
libgcc/ChangeLog
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@ -1,3 +1,10 @@
2015-10-16 Kaushik Phatak <kaushik.phatak@kpit.com>
* config/rl78/divmodqi.S: Return 0x00 by default for div by 0.
* config/rl78/divmodsi.S: Update return register to r8.
* config/rl78/divmodhi.S: Update return register to r8,r9.
Branch to main_loop_done_himode to pop registers before return.
2015-10-09 Venkataramanan kumar <venkataramanan.kumar@amd.com>
* config/i386/cpuinfo.c (get_amd_cpu): Detect bdver4.

4
libgcc/config/rl78/divmodhi.S
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@ -454,7 +454,11 @@ __generic_himod:
movw ax, den
cmpw ax, #0
bnz $den_not_zero\which
.if \need_result
movw quot, #0
.else
movw num, #0
.endif
ret
den_not_zero\which:

2
libgcc/config/rl78/divmodqi.S
View File

@ -63,7 +63,7 @@ num_eq_den\which:
ret
den_is_zero\which:
mov r8, #0xff
mov r8, #0x00
ret
;; These routines leave DE alone - the signed functions use DE

7
libgcc/config/rl78/divmodsi.S
View File

@ -688,9 +688,14 @@ __generic_simod:
or a, denB3 ; not x
cmpw ax, #0
bnz $den_not_zero\which
.if \need_result
movw quotL, #0
movw quotH, #0
.else
movw numL, #0
movw numH, #0
ret
.endif
br $!main_loop_done_himode\which
den_not_zero\which:
.if \need_result