From d537d09232cbd77e5724866288f426d99cf75375 Mon Sep 17 00:00:00 2001 From: Shriya Sharma Date: Tue, 3 Oct 2023 11:11:18 +0100 Subject: [PATCH] Added English Language description for stq instruction --- openpower/isa/fixedstore.mdwn | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/openpower/isa/fixedstore.mdwn b/openpower/isa/fixedstore.mdwn index f443e817..07b1b534 100644 --- a/openpower/isa/fixedstore.mdwn +++ b/openpower/isa/fixedstore.mdwn @@ -426,6 +426,25 @@ Pseudo-code: EA <- b + EXTS(DS || 0b00) MEM(EA, 16) <- RSp +Description: + + Let the effective address (EA) be the sum (RA|0)+ + (DS||0b00). The contents of register pair RSp are + stored into the quadword in storage addressed by EA. + + If RSp is odd, the instruction form is invalid. + + The contents of an even-odd pair of GPRs is stored into + the quadword in storage addressed by EA as follows. + In Big-Endian mode, the even-numbered GPR is stored + into the doubleword in storage addressed by EA and + the odd-numbered GPR is stored into the doubleword + addressed by EA+8. In Little-Endian mode, the + even-numbered GPR is stored byte-reversed into the + doubleword in storage addressed by EA+8 and the + odd-numbered GPR is stored byte-reversed into the + doubleword addressed by EA. + Special Registers Altered: None -- 2.30.2