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- /*
- * squeezed file format:
- * Sqhdr
- * original Exec header
- * two Squeeze tables
- * squeezed segment
- * unsqueezed segment, if any
- */
- #define SQMAGIC (ulong)0xFEEF0F1E
- typedef struct Sqhdr Sqhdr;
- struct Sqhdr {
- uchar magic[4]; /* SQMAGIC */
- uchar text[4]; /* squeezed length of text (excluding tables) */
- uchar data[4]; /* squeezed length of data (excluding tables) */
- uchar asis[4]; /* length of unsqueezed segment */
- uchar toptxt[4]; /* value for 0 encoding in text */
- uchar topdat[4]; /* value for 0 encoding in data */
- uchar sum[4]; /* simple checksum of unsqueezed data */
- uchar flags[4];
- };
- #define SQHDRLEN (8*4)
- /*
- * certain power instruction types are rearranged by sqz
- * so as to move the variable part of the instruction word to the
- * low order bits. note that the mapping is its own inverse.
- */
- #define QREMAP(X)\
- switch((X)>>26){\
- case 19: case 31: case 59: case 63:\
- (X) = (((X) & 0xFC00F801) | (((X)>>15)&0x7FE) | (((X)&0x7FE)<<15));\
- }
|
