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Revert "https://bugs.libre-soc.org/show_bug.cgi?id=966#c4"
author
Luke Kenneth Casson Leighton
<lkcl@lkcl.net>
Tue, 1 Nov 2022 13:49:16 +0000
(13:49 +0000)
committer
Luke Kenneth Casson Leighton
<lkcl@lkcl.net>
Fri, 2 Jun 2023 18:51:16 +0000
(19:51 +0100)
This reverts commit
263a8fca0f7413e62cf74a0e559e8965b0951e6c
.
openpower/isa/bitmanip.mdwn
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diff --git
a/openpower/isa/bitmanip.mdwn
b/openpower/isa/bitmanip.mdwn
index 5d4044886eb397c046b6cc9027f909d245e196c2..89515ec977385f3ffd7f91b253f795c7d55d69c8 100644
(file)
--- a/
openpower/isa/bitmanip.mdwn
+++ b/
openpower/isa/bitmanip.mdwn
@@
-111,8
+111,12
@@
Z23-Form
Pseudo-code:
n <- (RB)
Pseudo-code:
n <- (RB)
- m <- sm + 1
- RT <- (n[m:XLEN-1] || [0]*m) + (RA)
+ switch (sm)
+ case (0): sum[0:XLEN-1] = (n[0:XLEN-1-1] || [0]*1) + (RA)
+ case (1): sum[0:XLEN-1] = (n[0:XLEN-2-1] || [0]*2) + (RA)
+ case (2): sum[0:XLEN-1] = (n[0:XLEN-3-1] || [0]*3) + (RA)
+ default: sum[0:XLEN-1] = (n[0:XLEN-4-1] || [0]*4) + (RA)
+ RT <- sum
Special Registers Altered:
Special Registers Altered:
@@
-128,8
+132,12
@@
Z23-Form
Pseudo-code:
n <- ([0]*(XLEN/2)) || (RB)[XLEN/2:XLEN-1]
Pseudo-code:
n <- ([0]*(XLEN/2)) || (RB)[XLEN/2:XLEN-1]
- m <- sm + 1
- RT <- (n[m:XLEN-1] || [0]*m) + (RA)
+ switch (sm)
+ case (0): sum[0:XLEN-1] = (n[0:XLEN-1-1] || [0]*1) + (RA)
+ case (1): sum[0:XLEN-1] = (n[0:XLEN-2-1] || [0]*2) + (RA)
+ case (2): sum[0:XLEN-1] = (n[0:XLEN-3-1] || [0]*3) + (RA)
+ default: sum[0:XLEN-1] = (n[0:XLEN-4-1] || [0]*4) + (RA)
+ RT <- sum
Special Registers Altered:
Special Registers Altered: