History log of /php-src/Zend/asm/jump_x86_64_sysv_elf_gas.S (Results 1 – 5 of 5)
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# f9a83a4b 03-Feb-2024 David Carlier

fiber fix wrong asm directives on (default) solaris build mode.

Illumos/Solaris while being 64 bits produces by default 32 bits build.
In this case building the i386 assembly.

C

fiber fix wrong asm directives on (default) solaris build mode.

Illumos/Solaris while being 64 bits produces by default 32 bits build.
In this case building the i386 assembly.

Close GH-13320

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# 49551d7c 21-Jan-2023 Niels Dossche <7771979+nielsdos@users.noreply.github.com>

Sync boost/context assembly files for fibers

Fixes GH-10398

The stack was misaligned upon entering the trampoline function [1], this
causes a CPU trap when the SSE instruction i

Sync boost/context assembly files for fibers

Fixes GH-10398

The stack was misaligned upon entering the trampoline function [1], this
causes a CPU trap when the SSE instruction is executed to copy data from
the stack. This was fixed upstream [2]. This commit syncs all upstream
changes from the boost/context assembly files to our copy.

[1] https://github.com/php/php-src/pull/10407#issuecomment-1404180877
[2] https://github.com/boostorg/context/pull/219

Closes GH-10407.

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Revision tags: php-8.2.0RC1, php-8.1.10, php-8.0.23, php-8.0.23RC1, php-8.1.10RC1, php-8.2.0beta3, php-8.2.0beta2, php-8.1.9, php-8.0.22
# 37b84b7e 26-Jul-2022 Chen, Hu

Fiber: add shadow stack support

Shadow stack is part of Intel's Control-Flow Enforcement Technology (CET).

Whenever a function is called, the return address is pushed onto both

Fiber: add shadow stack support

Shadow stack is part of Intel's Control-Flow Enforcement Technology (CET).

Whenever a function is called, the return address is pushed onto both
the regular stack and the shadow stack. When that function returns, the
return addresses are popped off both stacks and compared; if they fail
to match, #CP raised.

With this commit, we create shadow stack for each fiber context and
switch the shadow stack accordingly during fcontext switch.

Signed-off-by: Chen, Hu <hu1.chen@intel.com>

Closes GH-9283.

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Revision tags: php-8.1.9RC1, php-8.2.0beta1, php-8.0.22RC1, php-8.0.21, php-8.1.8, php-8.2.0alpha3, php-8.1.8RC1, php-8.2.0alpha2, php-8.0.21RC1, php-8.0.20, php-8.1.7, php-8.2.0alpha1, php-7.4.30, php-8.1.7RC1, php-8.0.20RC1, php-8.1.6, php-8.0.19, php-8.1.6RC1
# 040a37d3 26-Apr-2022 Chen

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mech

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mechanism where any indirect CALL/JMP must target
an ENDBR instruction or suffer #CP.

This commit adds IBT support for fiber:
1. Add endbr32/64 in assembly
2. Inform compiler jump_fcontext may return via indirect branch

Furthermore:
gcc support CET since v8.1 and set it to default since gcc 11. That is,
the ELF header of sapi/cli/php has a property named IBT. However, such
property is lost since PHP8.1 because the assembly introduced by Fiber.
This commit also fixes this.

Closes GH-8339

Signed-off-by: Chen, Hu <hu1.chen@intel.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

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Revision tags: php-8.0.19RC1, php-8.0.18, php-8.1.5, php-7.4.29, php-8.1.5RC1, php-8.0.18RC1, php-8.1.4, php-8.0.17, php-8.1.4RC1, php-8.0.17RC1, php-8.1.3, php-8.0.16, php-7.4.28, php-8.1.3RC1, php-8.0.16RC1, php-8.1.2, php-8.0.15, php-8.1.2RC1, php-8.0.15RC1, php-8.0.14, php-8.1.1, php-7.4.27, php-8.1.1RC1, php-8.0.14RC1, php-7.4.27RC1, php-8.1.0, php-8.0.13, php-7.4.26, php-7.3.33, php-8.1.0RC6, php-7.4.26RC1, php-8.0.13RC1, php-8.1.0RC5, php-7.3.32, php-7.4.25, php-8.0.12, php-8.1.0RC4, php-8.0.12RC1, php-7.4.25RC1, php-8.1.0RC3, php-8.0.11, php-7.4.24, php-7.3.31, php-8.1.0RC2, php-7.4.24RC1, php-8.0.11RC1, php-8.1.0RC1, php-7.4.23, php-8.0.10, php-7.3.30, php-8.1.0beta3, php-8.0.10RC1, php-7.4.23RC1, php-8.1.0beta2, php-8.0.9, php-7.4.22, php-8.1.0beta1, php-7.4.22RC1, php-8.0.9RC1, php-8.1.0alpha3, php-7.4.21, php-7.3.29, php-8.0.8, php-8.1.0alpha2, php-7.4.21RC1, php-8.0.8RC1, php-8.1.0alpha1, php-8.0.7, php-7.4.20, php-8.0.7RC1, php-7.4.20RC1, php-8.0.6, php-7.4.19, php-7.4.18, php-7.3.28, php-8.0.5
# c276c16b 26-Apr-2021 Aaron Piotrowski

Implement Fibers

RFC: https://wiki.php.net/rfc/fibers

Closes GH-6875.