IA32 System V Application Binary Interface

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This is the place to discuss modification and extension of IA32 processor specific System V Application Binary Interface. The current ia32 psABI source is on hjl/x86/master branch at

https://github.com/hjl-tools/x86-psABI/tree/hjl/x86/master

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Jonathan Wakely, … John McCall25

Jul 3

Alignment requirements for _Atomic should be stated

On Wed, Jul 3, 2024 at 6:17 AM abus...@kayari.org <abus...@kayari.org> wrote: On Thursday 12

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Alignment requirements for _Atomic should be stated

On Wed, Jul 3, 2024 at 6:17 AM abus...@kayari.org <abus...@kayari.org> wrote: On Thursday 12

Jul 3

H.J. Lu, … John McCall14

8/25/21

[PATCH] Add optional _Float16 support

On Wed, Aug 25, 2021 at 8:36 AM HJ Lu <hjl....@gmail.com> wrote: On Mon, Aug 23, 2021 at 10:

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[PATCH] Add optional _Float16 support

On Wed, Aug 25, 2021 at 8:36 AM HJ Lu <hjl....@gmail.com> wrote: On Mon, Aug 23, 2021 at 10:

8/25/21

Thiago Macieira, H.J. Lu2

5/3/20

Passing constrained enums via ...: should they be zero-extended to register size?

On Thu, Apr 30, 2020 at 7:56 PM Thiago Macieira <thi...@macieira.org> wrote: > > Code:

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Passing constrained enums via ...: should they be zero-extended to register size?

On Thu, Apr 30, 2020 at 7:56 PM Thiago Macieira <thi...@macieira.org> wrote: > > Code:

5/3/20

4/2/20

How to determine the alignment arguments on the stack of struct or union for argument passing?

The gcc version I use is 7.3.0 and the option is -m32. For example: #include <immintrin.h>

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How to determine the alignment arguments on the stack of struct or union for argument passing?

The gcc version I use is 7.3.0 and the option is -m32. For example: #include <immintrin.h>

4/2/20

2/21/19

RFC: Update x86 psABIs to support IBT

On Thu, Feb 21, 2019 at 2:30 PM Rui Ueyama <ru...@google.com> wrote: > > On Thu, Feb 21,

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RFC: Update x86 psABIs to support IBT

On Thu, Feb 21, 2019 at 2:30 PM Rui Ueyama <ru...@google.com> wrote: > > On Thu, Feb 21,

2/21/19

12/22/18

The Intel386 psABI draft updated with program property is available

It includes Intel Control-flow Enforcement Technology (CET) support: https://github.com/hjl-tools/x86

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The Intel386 psABI draft updated with program property is available

It includes Intel Control-flow Enforcement Technology (CET) support: https://github.com/hjl-tools/x86

12/22/18

5/29/18

Parameters store on stack is preserved across function call or volatile in ABI of intel386 & amd64?

Hi Is the parameters stored on the stack preserved across function calls or volatile in the ABI of

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Parameters store on stack is preserved across function call or volatile in ABI of intel386 & amd64?

Hi Is the parameters stored on the stack preserved across function calls or volatile in the ABI of

5/29/18

9/6/17

Description of _Bool in registers (outside of arg-passing / returning) is overly specific.

Section 2.1.1 includes this language: Booleans, when stored in a memory object, are stored as single

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Description of _Bool in registers (outside of arg-passing / returning) is overly specific.

Section 2.1.1 includes this language: Booleans, when stored in a memory object, are stored as single

9/6/17

H.J. Lu, … Michael Matz13

8/7/17

RFC: Add R_X86_64_GPOFF/R_386_GPOFF relocation

Hi, On Mon, 7 Aug 2017, HJ Lu wrote: > > Before removing the last segment register from general

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RFC: Add R_X86_64_GPOFF/R_386_GPOFF relocation

Hi, On Mon, 7 Aug 2017, HJ Lu wrote: > > Before removing the last segment register from general

8/7/17

H.J. Lu, … Florian Weimer9

7/28/17

RFC: Update x86 psABI to support shadow stac

On Fri, Jul 28, 2017 at 7:59 AM, Florian Weimer <fwe...@redhat.com> wrote: > On 07/27/2017

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RFC: Update x86 psABI to support shadow stac

On Fri, Jul 28, 2017 at 7:59 AM, Florian Weimer <fwe...@redhat.com> wrote: > On 07/27/2017

7/28/17

6/14/17

RFC: Update i386 psABI to support ENDBR

On Tue, Jun 13, 2017 at 12:11 PM, HJ Lu <hjl....@gmail.com> wrote: > To support ENDBR in

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RFC: Update i386 psABI to support ENDBR

On Tue, Jun 13, 2017 at 12:11 PM, HJ Lu <hjl....@gmail.com> wrote: > To support ENDBR in

6/14/17

H.J. Lu, Rafael Espíndola4

4/3/17

Clarify R_386_GOT32 and R_386_GOT32X relocations

On Thu, Mar 30, 2017 at 12:50 PM, Rafael Espíndola <rafael.e...@gmail.com> wrote: > On

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Clarify R_386_GOT32 and R_386_GOT32X relocations

On Thu, Mar 30, 2017 at 12:50 PM, Rafael Espíndola <rafael.e...@gmail.com> wrote: > On

4/3/17

6/24/16

RFC: Call external functions without PLT

Procedure Linkage Table (PLT) is used to access external functions defined in shared object and

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RFC: Call external functions without PLT

Procedure Linkage Table (PLT) is used to access external functions defined in shared object and

6/24/16

4/24/16

Convert load via GOT slot to load immediate

We should covert mov foo@GOT, %reg2 and mov foo@GOT(%reg1), %reg2 to mov $foo, %reg2 instead of lea

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Convert load via GOT slot to load immediate

We should covert mov foo@GOT, %reg2 and mov foo@GOT(%reg1), %reg2 to mov $foo, %reg2 instead of lea

4/24/16

H.J. Lu, Thiago Macieira4

12/7/15

RFC: Intel386 psABI version 1.1 draft

On Tue, Nov 24, 2015 at 8:16 AM, HJ Lu <hjl....@gmail.com> wrote: > Hi, > > Here is

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RFC: Intel386 psABI version 1.1 draft

On Tue, Nov 24, 2015 at 8:16 AM, HJ Lu <hjl....@gmail.com> wrote: > Hi, > > Here is

12/7/15

10/20/15

RCF: Add R_386_GOT32X

On Thu, Oct 15, 2015 at 8:54 AM, HJ Lu <hjl....@gmail.com> wrote: > X86 instruction

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RCF: Add R_386_GOT32X

On Thu, Oct 15, 2015 at 8:54 AM, HJ Lu <hjl....@gmail.com> wrote: > X86 instruction

10/20/15

Rafael Espíndola, … H.J. Lu7

9/30/15

What exactly does R_386_PC32 point to?

>> Hope that helps (and I didn't mess up details too much), >> Alexander I does,

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What exactly does R_386_PC32 point to?

>> Hope that helps (and I didn't mess up details too much), >> Alexander I does,

9/30/15

7/3/15

RFC: A new psABI for Intel MCU

On Mon, May 11, 2015 at 6:43 AM, HJ Lu <hjl....@gmail.com> wrote: > I am working on a new

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RFC: A new psABI for Intel MCU

On Mon, May 11, 2015 at 6:43 AM, HJ Lu <hjl....@gmail.com> wrote: > I am working on a new

7/3/15

5/29/15

Re: Relocations to use when eliding plts

On Fri, May 29, 2015 at 10:59 AM, HJ Lu <hjl....@gmail.com> wrote: > On Fri, May 29, 2015

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Re: Relocations to use when eliding plts

On Fri, May 29, 2015 at 10:59 AM, HJ Lu <hjl....@gmail.com> wrote: > On Fri, May 29, 2015

5/29/15

5/18/15

RFC: Add a new relocation to x86-64/i386 psABIs

On Mon, May 18, 2015 at 8:52 AM, Michael Matz <ma...@suse.de> wrote: > Hi, > > On Mon,

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RFC: Add a new relocation to x86-64/i386 psABIs

On Mon, May 18, 2015 at 8:52 AM, Michael Matz <ma...@suse.de> wrote: > Hi, > > On Mon,

5/18/15

2/19/15

RFC: Update Intel386 psABI for AVX-512

Hi, I updated Intel386 psABI for AVX-512. It is on hjl/x86/avx512 branch at https://github.com/hjl-

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RFC: Update Intel386 psABI for AVX-512

Hi, I updated Intel386 psABI for AVX-512. It is on hjl/x86/avx512 branch at https://github.com/hjl-

2/19/15

H.J. Lu, Michael Eager4

2/19/15

ANNOUNCEMENT: Intel386 psABI version 1.0

On Mon, Feb 16, 2015 at 9:54 AM, HJ Lu <hjl....@gmail.com> wrote: > On Fri, Feb 6, 2015 at

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ANNOUNCEMENT: Intel386 psABI version 1.0

On Mon, Feb 16, 2015 at 9:54 AM, HJ Lu <hjl....@gmail.com> wrote: > On Fri, Feb 6, 2015 at

2/19/15

H.J. Lu, Joseph Myers3

1/22/15

RFC: IA-32 psABI draft version 0.1

On Thu, Jan 22, 2015 at 6:33 AM, Joseph Myers <jos...@codesourcery.com> wrote: > I would

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RFC: IA-32 psABI draft version 0.1

On Thu, Jan 22, 2015 at 6:33 AM, Joseph Myers <jos...@codesourcery.com> wrote: > I would

1/22/15

11/7/14

Require REX prefix to encode R_X86_64_GOTTPOFF

Please ignore this. I should posit it to x32 psABI group. On Friday, November 7, 2014 12:42:59 PM UTC

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Require REX prefix to encode R_X86_64_GOTTPOFF

Please ignore this. I should posit it to x32 psABI group. On Friday, November 7, 2014 12:42:59 PM UTC

11/7/14

11/19/13

x86-64 psABI group

Hi, I created: https://groups.google.com/forum/?hl=en#!forum/x86-64-abi to cover x86-64 psABI. Anyone

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x86-64 psABI group

Hi, I created: https://groups.google.com/forum/?hl=en#!forum/x86-64-abi to cover x86-64 psABI. Anyone

11/19/13

10/9/13

X86-64 System V Application Binary Interface group announcement

Hi, www.x86-64.org was down for several months and it is up now, but not in its full capacity. I

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X86-64 System V Application Binary Interface group announcement

Hi, www.x86-64.org was down for several months and it is up now, but not in its full capacity. I

10/9/13

peter, Michael Eager2

12/16/09

peter wrote: > Hi all, where I can find a simple ELF loader that compatible with > (System V

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peter wrote: > Hi all, where I can find a simple ELF loader that compatible with > (System V

12/16/09

H.J. Lu, … Ian Lance Taylor23

6/8/09

Proposal for STT_GNU_IFUNC and R_*_IRELATIVE

On Mon, Jun 8, 2009 at 6:30 AM, Paul Brook<pa...@codesourcery.com> wrote: >> The only

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Proposal for STT_GNU_IFUNC and R_*_IRELATIVE

On Mon, Jun 8, 2009 at 6:30 AM, Paul Brook<pa...@codesourcery.com> wrote: >> The only

6/8/09

H.J., … Dave Kreitzer7

4/1/08

How should _Decimal64 and _Decimal128 be aligned on stack?

Hi David, I added gcc mailing list. HJ On Tue, Apr 1, 2008 at 10:53 AM, Dave Kreitzer <david.l.

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How should _Decimal64 and _Decimal128 be aligned on stack?

Hi David, I added gcc mailing list. HJ On Tue, Apr 1, 2008 at 10:53 AM, Dave Kreitzer <david.l.

4/1/08

hon...@gmail.com, … Mats Wichmann10

8/23/07

IA32/X86-64 TLS extensions

HJ Lu wrote: > On Wed, Aug 22, 2007 at 06:01:49PM -0300, Alexandre Oliva wrote: > >> Are

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IA32/X86-64 TLS extensions

HJ Lu wrote: > On Wed, Aug 22, 2007 at 06:01:49PM -0300, Alexandre Oliva wrote: > >> Are

8/23/07

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