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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Andreas Krebbel <krebbel@linux.ibm.com>
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Date: Thu, 3 Dec 2020 16:31:15 +0100
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Subject: gdb-rhbz2012818-ibmz-update-1of5.patch
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;; IBM Z: Add support for HLASM extended mnemonics
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;; (Andreas Krebbel, RHBZ 2012818)
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Add extended mnemonics used in the HLASM assembler. All of them are
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just aliases for instructions we already support and help when
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assembling code which was written for the HLASM assembler.
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The HLASM mnemonics are documented here:
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https://www.ibm.com/support/knowledgecenter/SSENW6_1.6.0/com.ibm.hlasm.v1r6.asm/asmr1023.pdf
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See the 'Branching with extended mnemonic codes' chapter.
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objdump will still print the existing mnemonics with the exception of
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relative nop branches (i.e. conditional branches with an empty
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condition code mask). Now we have jnop and jgnop which will be used
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by objdump when possible.
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The same change have been applied to the LLVM assembler:
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https://reviews.llvm.org/D92185
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opcodes/
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* s390-opc.txt: Add extended mnemonics.
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gas/
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* testsuite/gas/s390/esa-g5.s: Test new extended mnemonics.
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* testsuite/gas/s390/esa-g5.d: Likewise.
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* testsuite/gas/s390/esa-z900.s: Likewise.
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* testsuite/gas/s390/esa-z900.d: Likewise.
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* testsuite/gas/s390/zarch-z900.s: Likewise.
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* testsuite/gas/s390/zarch-z900.d: Likewise.
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ld/
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* testsuite/ld-s390/tlsbin_64.dd: The newly added jgnop mnemonic
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replaces long relative branches with empty condition code mask.
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diff --git a/opcodes/s390-opc.txt b/opcodes/s390-opc.txt
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--- a/opcodes/s390-opc.txt
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+++ b/opcodes/s390-opc.txt
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@@ -246,10 +246,14 @@ d7 xc SS_L0RDRD "exclusive OR" g5 esa,zarch
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f8 zap SS_LLRDRD "zero and add" g5 esa,zarch
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a70a ahi RI_RI "add halfword immediate" g5 esa,zarch
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84 brxh RSI_RRP "branch relative on index high" g5 esa,zarch
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+84 jxh RSI_RRP "branch relative on index high" g5 esa,zarch
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85 brxle RSI_RRP "branch relative on index low or equal" g5 esa,zarch
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+85 jxle RSI_RRP "branch relative on index low or equal" g5 esa,zarch
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a705 bras RI_RP "branch relative and save" g5 esa,zarch
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+a705 jas RI_RP "branch relative and save" g5 esa,zarch
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a704 brc RI_UP "branch relative on condition" g5 esa,zarch
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a706 brct RI_RP "branch relative on count" g5 esa,zarch
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+a706 jct RI_RP "branch relative on count" g5 esa,zarch
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b241 cksm RRE_RR "checksum" g5 esa,zarch
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a70e chi RI_RI "compare halfword immediate" g5 esa,zarch
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a9 clcle RS_RRRD "compare logical long extended" g5 esa,zarch
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@@ -268,8 +272,11 @@ a701 tml RI_RU "test under mask low" g5 esa,zarch
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4700 nop RX_0RRD "no operation" g5 esa,zarch optparm
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4700 b*8 RX_0RRD "conditional branch" g5 esa,zarch
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47f0 b RX_0RRD "unconditional branch" g5 esa,zarch
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+a704 jnop RI_0P "nop jump" g5 esa,zarch
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a704 j*8 RI_0P "conditional jump" g5 esa,zarch
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+a704 br*8 RI_0P "conditional jump" g5 esa,zarch
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a7f4 j RI_0P "unconditional jump" g5 esa,zarch
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+a7f4 bru RI_0P "unconditional jump" g5 esa,zarch
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b34a axbr RRE_FEFE "add extended bfp" g5 esa,zarch
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b31a adbr RRE_FF "add long bfp" g5 esa,zarch
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ed000000001a adb RXE_FRRD "add long bfp" g5 esa,zarch
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@@ -437,7 +444,9 @@ e3000000001b slgf RXE_RRRD "subtract logical 64<32" z900 zarch
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e3000000000c msg RXE_RRRD "multiply single 64" z900 zarch
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e3000000001c msgf RXE_RRRD "multiply single 64<32" z900 zarch
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ec0000000044 brxhg RIE_RRP "branch relative on index high 64" z900 zarch
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+ec0000000044 jxhg RIE_RRP "branch relative on index high 64" z900 zarch
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ec0000000045 brxlg RIE_RRP "branch relative on index low or equal 64" z900 zarch
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+ec0000000045 jxleg RIE_RRP "branch relative on index low or equal 64" z900 zarch
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eb0000000044 bxhg RSE_RRRD "branch on index high 64" z900 zarch
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eb0000000045 bxleg RSE_RRRD "branch on index low or equal 64" z900 zarch
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eb000000000c srlg RSE_RRRD "shift right single logical 64" z900 zarch
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@@ -462,10 +471,15 @@ eb0000000080 icmh RSE_RURD "insert characters under mask high" z900 zarch
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a702 tmhh RI_RU "test under mask high high" z900 zarch
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a703 tmhl RI_RU "test under mask high low" z900 zarch
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c004 brcl RIL_UP "branch relative on condition long" z900 esa,zarch
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+c004 jgnop RIL_0P "nop jump long" z900 esa,zarch
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c004 jg*8 RIL_0P "conditional jump long" z900 esa,zarch
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+c004 br*8l RIL_0P "conditional jump long" z900 esa,zarch
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c0f4 jg RIL_0P "unconditional jump long" z900 esa,zarch
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+c0f4 brul RIL_0P "unconditional jump long" z900 esa,zarch
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c005 brasl RIL_RP "branch relative and save long" z900 esa,zarch
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+c005 jasl RIL_RP "branch relative and save long" z900 esa,zarch
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a707 brctg RI_RP "branch relative on count 64" z900 zarch
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+a707 jctg RI_RP "branch relative on count 64" z900 zarch
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a709 lghi RI_RI "load halfword immediate 64" z900 zarch
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a70b aghi RI_RI "add halfword immediate 64" z900 zarch
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a70d mghi RI_RI "multiply halfword immediate 64" z900 zarch
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