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20 Commits

Author SHA1 Message Date
Eric Astor a3ec4a3158 [ms] [llvm-ml] Allow use of locally-defined variables in expressions 
MASM allows variables defined by equate statements to be used in expressions.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D86946
 2020-09-07 14:00:14 -04:00
Eric Astor 2feb6e9b84 [ms] [llvm-ml] Fix STRUCT field alignment 
MASM aligns fields to the _minimum_ of the STRUCT alignment value and the size of the next field.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D86945
 2020-09-07 13:58:59 -04:00
Eric Astor e52e7ad54d [ms] [llvm-ml] Add support for bitwise named operators (AND, NOT, OR) in MASM 
Add support for expressions of the form '1 or 2', etc.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D86944
 2020-09-07 13:57:54 -04:00
Eric Astor ddd48cdba6 [ms] [llvm-ml] Add support for line continuations in MASM 
Add support for line continuations (the "backslash operator") in MASM by modifying the Parser's Lex method.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D83347
 2020-09-02 12:12:04 -04:00
Fangrui Song 1cc210383b [MC] Support infix operator ! 
Disabled for Darwin mode.

Also disabled for ARM which has compatible aliases (implied 'sp' operand
in 'srs*' instructions like 'srsda #31!').
 2020-07-30 23:25:53 -07:00
Eric Astor 47a3b85a97 [ms] [llvm-ml] Remove unused function 
Summary: Remove unused function

Reviewed By: lbenes

Differential Revision: https://reviews.llvm.org/D83898
 2020-07-17 09:06:37 -04:00
Mikael Holmen ae74387fc0 [MasmParser] Remove unused method emitStructValue to silence warning 
The method was added in bc8e262afe and has been unused ever since so
remove it to silence a gcc warning.
 2020-07-16 09:36:17 +02:00
Eric Astor 7f85e98082 [ms] [llvm-ml] Fix MASM support for nested unnamed STRUCTs and UNIONs 
Summary: Fix MASM support for nested unnamed STRUCTs and UNIONs

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D83345
 2020-07-13 10:36:56 -04:00
Eric Astor 4cdea5faf9 [ms] [llvm-ml] Improve MASM STRUCT field accessor support 
Summary:
Adds support for several accessors:
- `[<identifier>.<struct name>].<field>`
- `[<identifier>.<struct name>.<field>].<subfield>` (where `field` has already-defined STRUCT type)
- `[<variable>.<field>].<subfield>` (where `field` has already-defined STRUCT type)

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D83344
 2020-07-13 10:34:30 -04:00
Simon Pilgrim 997a3c29f4 Fix MSVC "not all control paths return a value" warnings. NFC. 2020-07-08 10:18:36 +01:00
Eric Astor bc8e262afe [ms] [llvm-ml] Add initial MASM STRUCT/UNION support 
Summary:
Add support for user-defined types to MasmParser, including initialization and field access.

Known issues:
- Omitted entry initializers (e.g., <,0>) do not work consistently for nested structs/arrays.
- Size checking/inference for values with known types is not yet implemented.
- Some ml64.exe syntaxes for accessing STRUCT fields are not recognized.
  - `[<register>.<struct name>].<field>`
  - `[<register>[<struct name>.<field>]]`
  - `(<struct name> PTR [<register>]).<field>`
  - `[<variable>.<struct name>].<field>`
  - `(<struct name> PTR <variable>).<field>`

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D75306
 2020-07-07 17:02:10 -04:00
Eric Astor 353a169cb8 [ms] [llvm-ml] Use default RIP-relative addressing for x64 MASM. 
Summary:
When parsing 64-bit MASM, treat memory operands with unspecified base register as RIP-based.

Documented in several places, including https://software.intel.com/en-us/articles/introduction-to-x64-assembly: "Unfortunately, MASM does not allow this form of opcode, but other assemblers like FASM and YASM do. Instead, MASM embeds RIP-relative addressing implicitly."

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D73227
 2020-07-01 12:41:07 -04:00
Shengchen Kan c031378ce0 [MC][NFC] Use camelCase style for functions in MCObjectStreamer 2020-04-20 20:09:20 -07:00
Dmitry Preobrazhensky 4a983b25bf [MC][DWARF] Corrected handling of is_stmt flag in .loc directives 
According to DWARF standard, is_stmt is a global flag; when set or cleared it should affect subsequent .loc directives.

However llvm assembler handled is_stmt differently: it forced all locations to have is_stmt=1 unless is_stmt was specified explicitly as 0.

The fix utilizes current DWARF state flags to compute correct is_stmt values.

See https://bugs.llvm.org/show_bug.cgi?id=45529 for a detailed issue description.

Reviewers: arsenm, probinson, enderby

Differential Revision: https://reviews.llvm.org/D78102
 2020-04-20 13:57:49 +03:00
Eric Astor 85b641c27a [ms] Rename ParsingInlineAsm functions/variables to reflect MS-specificity. 
Summary: ParsingInlineAsm was a misleading name. These values are only set for MS-style inline assembly.

Reviewed By: rnk

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D75198
 2020-02-26 15:19:40 -05:00
Eric Astor 95291a0e34 Reland "[ms] [llvm-ml] Improve data support, adding names and complex initializers." 
This reverts commit 9fe769a961, and re-lands commit c2e272f8cf.

Summary: Add support for ?, DUP, and string initializers, as well as MASM syntax for named data locations.

This version avoids the use of a C++17-only feature, if-statements with initializer.

Reviewers: rnk, thakis

Reviewed By: thakis

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73226
 2020-02-24 16:40:25 -05:00
Eric Astor 9fe769a961 Revert "[ms] [llvm-ml] Improve data support, adding names and complex initializers." 
This reverts commit c2e272f8cf, which broke builds.
 2020-02-24 16:08:40 -05:00
Eric Astor c2e272f8cf [ms] [llvm-ml] Improve data support, adding names and complex initializers. 
Summary: Add support for ?, DUP, and string initializers, as well as MASM syntax for named data locations.

Reviewers: rnk, thakis

Reviewed By: thakis

Subscribers: merge_guards_bot, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73226
 2020-02-24 15:40:04 -05:00
Eric Astor f0c642e822 Remove unused functions in llvm-ml 
On review, these functions will likely not be needed even in the final MasmParser.
 2020-02-21 10:04:24 -05:00
Eric Astor ee2c0f76d7 [ms] [llvm-ml] Add a draft MASM parser 
Summary:
Many directives are unavailable, and support for others may be limited.

This first draft has preliminary support for:
    - conditional directives (including errors),
    - data allocation (unsigned types up to 8 bytes, and ALIGN),
    - equates/variables (numeric and text),
    - and procedure directives (without parameters),
as well as COMMENT, ECHO, INCLUDE, INCLUDELIB, PUBLIC, and EXTERN. Text variables (aka text macros) are expanded in-place wherever the identifier occurs.

We deliberately ignore all ml.exe processor directives.

Prominent features not yet supported:
    - structs
    - macros (both procedures and functions)
    - procedures (with specified parameters)
    - substitution & expansion operators

Conditional directives are complicated by the fact that "ifdef rax" is a valid way to check if a file is being assembled for a 64-bit x86 processor; we add support for "ifdef <register>" in general, which requires adding a tryParseRegister method to all MCTargetAsmParsers. (Some targets require backtracking in the non-register case.)

Reviewers: rnk, thakis

Reviewed By: thakis

Subscribers: kerbowa, merge_guards_bot, wuzish, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, mgorny, sbc100, jgravelle-google, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, Jim, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72680
 2020-02-16 12:30:46 -05:00