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genxml: New generated header genX_bits.h (v6)
genX_bits.h contains the sizes of bitfields in genxml instructions,
structures, and registers. It also defines some functions to query those
sizes.
isl_surf_init() will use the new header to validate that requested
pitches fit in their destination bitfields.
What's currently in genX_bits.h:
- Each CONTAINER::Field from gen*.xml that has a bitsize has a macro
in genX_bits.h:
#define GEN{N}_CONTAINER_Field_bits {bitsize}
- For each set of macros whose name, after stripping the GEN prefix,
is the same, genX_bits.h contains a query function:
static inline uint32_t __attribute__((pure))
CONTAINER_Field_bits(const struct gen_device_info *devinfo);
v2 (Chad Versace):
- Parse the XML instead of scraping the generated gen*_pack.h headers.
v3 (Dylan Baker):
- Port to Mako.
v4 (Jason Ekstrand):
- Make the _bits functions take a gen_device_info.
v5 (Chad Versace):
- Fix autotools out-of-tree build.
- Fix Android build. Tested with git://github.com/android-ia/manifest.
- Fix macro names. They were all missing the "_bits" suffix.
- Fix macros names more. Remove all double-underscores.
- Unindent all generated code. (It was floating in a sea of whitespace).
- Reformat header to appear human-written not machine-generated.
- Sort gens from high to low. Newest gens should come first because,
when we read code, we likely want to read the gen8/9 code and ignore
the gen4 code. So put the gen4 code at the bottom.
- Replace 'const' attributes with 'pure', because the functions now
have a pointer parameter.
- Add --cpp-guard flag. Used by Android.
- Kill class FieldCollection. After Jason's rewrite, it was just
a dict.
v6 (Chad Versace):
- Replace `key not in d.keys()` with `key not in d`. [for dylan]
Co-authored-by: Dylan Baker <dylan@pnwbakers.com>
Co-authored-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> (v5)
Reviewed-by: Dylan Baker <dylan@pnwbakers.com> (v6)