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Any 32 bit immediate is allowed in a BPF instruction, including those
greater than the largest positive i32 value.
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This PR consistently maps .ACCES into AccessDenied and .PERM into
PermissionDenied. AccessDenied is returned if the file mode bit
(user/group/other rwx bits) disallow access (errno was `EACCES`).
PermissionDenied is returned if something else denies access (errno was
`EPERM`) (immutable bit, SELinux, capabilities, etc). This somewhat
subtle distinction is a POSIX thing.
Most of the change is updating std.posix Error Sets to contain both
errors, and then propagating the pair up through caller Error Sets.
Fixes #16782
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The compiler actually doesn't need any functional changes for this: Sema
does reification based on the tag indices of `std.builtin.Type` already!
So, no zig1.wasm update is necessary.
This change is necessary to disallow name clashes between fields and
decls on a type, which is a prerequisite of #9938.
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Note that the original `cgroup_storage` MapType has been deprecated,
so renamed to `cgroup_storage_deprecated`.
Signed-off-by: Tw <tw19881113@gmail.com>
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`unexpectedErrno` comes from `std.posix`, not `std.os`.
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closes #5019
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Let's take this breaking change opportunity to fix the style of this
enum.
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Insn.st() can be used with dynamic size just like Insn.stx(), which is
relevant in a code generation context.
using ImmOrReg caused an error as its fields were ordered differently than
Source.
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Most of this migration was performed automatically with `zig fmt`. There
were a few exceptions which I had to manually fix:
* `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten
* `@truncate`'s fixup is incorrect for vectors
* Test cases are not formatted, and their error locations change
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Signed-off-by: Eric Joldasov <bratishkaerik@getgoogleoff.me>
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Returning a bool allows to conveniently use it as the condition
of a while loop.
Also remove restriction that ST cannot be double-word.
While imm is only 32-bit, this value is extended into a 64-bit
memory location.
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- For ALU operations, src should be allowed to be an explicit Reg.
- Expose AluOp and JmpOp as public types.
This makes code generation using BPF as a backend easier,
as AluOp and JmpOp can be used directly as part of an IR
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Tests with no names are executed when using `zig test` regardless of the
`--test-filter` used. Non-named tests should be used when simply
importing unit tests from another file. This allows `zig test` to find
all the appropriate tests, even when using `--test-filter`.
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Now there is only 1 architecture-specific file for Linux kernel bits.
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We already have a LICENSE file that covers the Zig Standard Library. We
no longer need to remind everyone that the license is MIT in every single
file.
Previously this was introduced to clarify the situation for a fork of
Zig that made Zig's LICENSE file harder to find, and replaced it with
their own license that required annual payments to their company.
However that fork now appears to be dead. So there is no need to
reinforce the copyright notice in every single file.
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The primary purpose of this change is to eliminate one usage of
`usingnamespace` in the standard library - specifically the usage for
errno values in `std.os.linux`.
This is accomplished by truncating the `E` prefix from error values, and
making errno a proper enum.
A similar strategy can be used to eliminate some other `usingnamespace`
sites in the std lib.
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Conflicts:
* doc/langref.html.in
* lib/std/enums.zig
* lib/std/fmt.zig
* lib/std/hash/auto_hash.zig
* lib/std/math.zig
* lib/std/mem.zig
* lib/std/meta.zig
* test/behavior/alignof.zig
* test/behavior/bitcast.zig
* test/behavior/bugs/1421.zig
* test/behavior/cast.zig
* test/behavior/ptrcast.zig
* test/behavior/type_info.zig
* test/behavior/vector.zig
Master branch added `try` to a bunch of testing function calls, and some
lines also had changed how to refer to the native architecture and other
`@import("builtin")` stuff.
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Follow-up from 507a8096d2f9624bafaf963c3e189a477ef6b7bf
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No need for any such thing. Instead, provide an integer tag type for the
enum.
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BPF: add BTF
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* added documentation for ringbuffers, which context type maps to which program type, and added some formatting
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unofficial bpf insn reference
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* moved bpf syscall, added some bpf instructions and tests
* had to move bpf out of bits so that a freestanding target could import it
* removed line
* fixed imports
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