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Code Issues Releases Activity

amd64: fix return value of copyinstr after r338970

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The function stopped swapping rdi and rsi, but the error handling
code was not updated with the new register name.

Approved by:	re (implicit)
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mateusz Guzik 2018-09-27 20:48:07 +00:00
parent 89f652d149
commit 825eeb55f4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338989
1 changed files with 1 additions and 1 deletions
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sys/amd64/amd64/support.S
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@ -1097,7 +1097,7 @@ copyinstr_toolong_smap:
copyinstr_toolong:
/* rdx is zero - return ENAMETOOLONG or EFAULT */
movq $VM_MAXUSER_ADDRESS,%rax
cmpq %rax,%rsi
cmpq %rax,%rdi
jae cpystrflt
movl $ENAMETOOLONG,%eax
jmp cpystrflt_x