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zipl/boot: don't use lt to test value in tape0.S

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This instruction is not present on older machines, therefore
use ltr.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Fixes: 1627c6a39f ("zipl: Support command lines longer than 896 bytes in bootloader")
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Sven Schnelle
2022-02-22 12:00:05 +01:00
committed by Jan Höppner
parent 47016441f0
commit 1bd73c68f9
1 changed files with 2 additions and 1 deletions
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zipl/boot/tape0.S
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@@ -249,7 +249,8 @@ iplstart:
clc 0(3,%r4),.L_eof # if it is EOFx
bz .Lagain1 # skip dateset trailer
lt %r3,MAX_COMMAND_LINE_SIZE-PARMAREA+4(%r12)
l %r3,MAX_COMMAND_LINE_SIZE-PARMAREA+4(%r12)
ltr %r3,%r3
jnz 0f
lhi %r3,LEGACY_COMMAND_LINE_SIZE
0: cr %r2,%r3 # truncate if line too long