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| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/qboot/include/const.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/qboot/include/const.h')
| -rw-r--r-- | roms/qboot/include/const.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/roms/qboot/include/const.h b/roms/qboot/include/const.h new file mode 100644 index 000000000..18f2350a2 --- /dev/null +++ b/roms/qboot/include/const.h @@ -0,0 +1,27 @@ +/* const.h: Macros for dealing with constants. */ + +#ifndef BIOS_CONST_H +#define BIOS_CONST_H + +/* Some constant macros are used in both assembler and + * C code. Therefore we cannot annotate them always with + * 'UL' and other type specifiers unilaterally. We + * use the following macros to deal with this. + * + * Similarly, _AT() will cast an expression with a type in C, but + * leave it unchanged in asm. + */ + +#ifdef __ASSEMBLY__ +#define _AC(X,Y) X +#define _AT(T,X) X +#else +#define __AC(X,Y) (X##Y) +#define _AC(X,Y) __AC(X,Y) +#define _AT(T,X) ((T)(X)) +#endif + +#define BITUL(x) (_AC(1,UL) << (x)) +#define BITULL(x) (_AC(1,ULL) << (x)) + +#endif /* BIOS_CONST_H */ |