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Runtime
Version 1.0
PULP Kernel Library
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Functions | |
| unsigned int | __builtin_pulp_fl1 (int x) |
| Bit position of the last bit set in x starting from MSB. More... | |
| unsigned int | __builtin_pulp_ff1 (int x) |
| Bit position of the first bit set in x, starting from LSB. More... | |
| unsigned int | __builtin_pulp_clb (int x) |
| Count leading bits of x. More... | |
| unsigned int | __builtin_pulp_cnt (int x) |
| Count number of bits at 1 in x. More... | |
| unsigned int | __builtin_pulp_parity (int x) |
| Returns x's parity. More... | |
| int | __builtin_pulp_bclr (int x, unsigned int mask) |
| Clears x's bit not at 1 in mask, mask = ~((2^size -1)<<pos), mask is immediate. More... | |
| int | __builtin_pulp_bclr_r (int x, unsigned int mask) |
| Clears size x's bit starting from off, mask[9..5] = size-1, mask[4..0] = off. More... | |
| int | __builtin_pulp_bset (int x, unsigned int mask) |
| Sets x's at 1 in mask, mask = (2^size -1)<<pos, mask is immediate. More... | |
| int | __builtin_pulp_bset_r (int x, unsigned int mask) |
| Sets size x's starting at off, mask = (2^size -1)<<pos. More... | |
| int | __builtin_pulp_bextract (int x, unsigned int size, unsigned int off) |
| Extracts size bits from x starting at offset off, sign extended. size and off immediates and in [0..31], (off+size)<=32. More... | |
| int | __builtin_pulp_bextract_r (int x, unsigned int mask) |
| Extracts size bits from x starting at offset off, size-1 in mask[9..5], off in mask[4..0], sign extended. More... | |
| unsigned int | __builtin_pulp_bextractu (int x, unsigned int size, unsigned int off) |
| Extracts size bits from x starting at offset off, zero extended. size and off immediates and in [0..31], (off+size)<=32. More... | |
| unsigned int | __builtin_pulp_bextractu_r (int x, unsigned int mask) |
| Extracts size bits from x starting at offset off, size-1 in mask[9..5], off in mask[4..0], zero extended. More... | |
| int | __builtin_pulp_binsert (int dst, unsigned int not_mask_imm, int src, unsigned int mask_imm, unsigned int off) |
| Inserts first size bits of src into dst at offset off. size and off given by 2 immediate masks: not_mask_imm, mask_imm. More... | |
| int | __builtin_pulp_binsert_r (int dst, int src, unsigned int mask_extract_insert, unsigned int off) |
| Inserts first size bits of src into dst at offset off. size-1 in mask_extract_insert[9..5], off in mask_extract_insert[4..0]. More... | |
| int | __builtin_pulp_rotr (int x) |
| One bit right rotation. More... | |
| int __builtin_pulp_bclr | ( | int | x, |
| unsigned int | mask | ||
| ) |
Clears x's bit not at 1 in mask, mask = ~((2^size -1)<<pos), mask is immediate.
Available macros:
gap8_bitclr(x, size, off);
__BITCLR(x, size, off); | x | Argument |
| mask | mask = ~((2^size -1)<<pos), immediate |
Referenced by __BITCLR(), and gap8_bitclr().
| int __builtin_pulp_bclr_r | ( | int | x, |
| unsigned int | mask | ||
| ) |
Clears size x's bit starting from off, mask[9..5] = size-1, mask[4..0] = off.
Available macros:
gap8_bitclr_r(x, size, off)
__BITCLR_R(x, size, off) | x | Argument |
| mask | mask[9..5] = size-1, mask[4..0] = off |
Referenced by __BITCLR_R(), __BITCLR_R_SAFE(), gap8_bitclr_r(), and gap8_bitclr_r_safe().
| int __builtin_pulp_bextract | ( | int | x, |
| unsigned int | size, | ||
| unsigned int | off | ||
| ) |
Extracts size bits from x starting at offset off, sign extended. size and off immediates and in [0..31], (off+size)<=32
Available macros:
gap8_bitextract(x, size, off)
__BITEXTRACT(x, size, off) | x | Argument |
| size | Extract size bits from x |
| off | Extract from x at position off, in [0..31] |
Referenced by __BITEXTRACT(), and gap8_bitextract().
| int __builtin_pulp_bextract_r | ( | int | x, |
| unsigned int | mask | ||
| ) |
Extracts size bits from x starting at offset off, size-1 in mask[9..5], off in mask[4..0], sign extended.
Available macros:
gap8_bitextract_r(x, size, off)
__BITEXTRACT_R(x, size, off) | x | Argument |
| mask | mask[9..5]: extract size, mask[4..0]: extract offset |
Referenced by __BITEXTRACT_R(), __BITEXTRACT_R_SAFE(), gap8_bitextract_r(), and gap8_bitextract_r_safe().
| unsigned int __builtin_pulp_bextractu | ( | int | x, |
| unsigned int | size, | ||
| unsigned int | off | ||
| ) |
Extracts size bits from x starting at offset off, zero extended. size and off immediates and in [0..31], (off+size)<=32
Available macros:
gap8_bitextractu(x, size, off)
__BITEXTRACTU(x, size, off) | x | Argument |
| size | Extract size bits from x |
| off | Extract from x at position off, in [0..31] |
Referenced by __BITEXTRACTU(), and gap8_bitextractu().
| unsigned int __builtin_pulp_bextractu_r | ( | int | x, |
| unsigned int | mask | ||
| ) |
Extracts size bits from x starting at offset off, size-1 in mask[9..5], off in mask[4..0], zero extended.
Available macros:
gap8_bitextractu_r(x, size, off)
__BITEXTRACTU_R(x, size, off) | x | Argument |
| mask | mask[9..5]: extract size, mask[4..0]: extract offset |
Referenced by __BITEXTRACTU_R(), __BITEXTRACTU_R_SAFE(), gap8_bitextractu_r(), and gap8_bitextractu_r_safe().
| int __builtin_pulp_binsert | ( | int | dst, |
| unsigned int | not_mask_imm, | ||
| int | src, | ||
| unsigned int | mask_imm, | ||
| unsigned int | off | ||
| ) |
Inserts first size bits of src into dst at offset off. size and off given by 2 immediate masks: not_mask_imm, mask_imm. Returns dst after insertion of src.
Given size and off:
not_mask_imm = ~((2^size-1)<<off)
mask_imm = ((2^size-1)<<off)
Warning: if mask_imm != ~not_mask_imm an error wil be generated
Available macros:
gap8_bitinsert(x, size, off)
__BITINSERT(x, size, off) | dst | Insert into dst |
| not_mask_imm | Not extraction mask: ~((2^size-1)<<off) |
| src | Source. First size bits of src are inserted into dst at position off |
| mask_imm | Extraction mask: (2^size-1)<<off |
| off | offset, in [0..31] |
Referenced by __BITINSERT(), and gap8_bitinsert().
| int __builtin_pulp_binsert_r | ( | int | dst, |
| int | src, | ||
| unsigned int | mask_extract_insert, | ||
| unsigned int | off | ||
| ) |
Inserts first size bits of src into dst at offset off. size-1 in mask_extract_insert[9..5], off in mask_extract_insert[4..0].xi Returns dst after insertion of src.
Available macros:
gap8_bitinsert_r(x, size, off)
__BITINSERT_R(x, size, off) | dst | Destination |
| src | Source. First size bits of src are inserted into dst at position off |
| mask_extract_insert | size-1 in mask_extract_insert[9..5], off in mask_extract_insert[4..0] |
| off | extraction offset, also present of mask_insert_extract |
Referenced by __BITINSERT_R(), __BITINSERT_R_SAFE(), gap8_bitinsert_r(), and gap8_bitinsert_r_safe().
| int __builtin_pulp_bset | ( | int | x, |
| unsigned int | mask | ||
| ) |
Sets x's at 1 in mask, mask = (2^size -1)<<pos, mask is immedidate.
Available macros:
gap8_bitset(x, size, off)
__BITSET(x, size, off) | x | Argument |
| mask | mask = (2^size -1)<<pos, mask is immediate. |
Referenced by __BITSET(), and gap8_bitset().
| int __builtin_pulp_bset_r | ( | int | x, |
| unsigned int | mask | ||
| ) |
Sets size x's starting at off, mask = (2^size -1)<<pos
Available macros:
gap8_bitset_r(x, size, off)
__BITSET_R(x, size, off) | x | Argument |
| mask | mask[9..5] = size-1, mask[4..0] = off |
Referenced by __BITSET_R(), __BITSET_R_SAFE(), gap8_bitset_r(), and gap8_bitset_r_safe().
| unsigned int __builtin_pulp_clb | ( | int | x | ) |
Count leading bits of x. This is the number of consecutive 1’s or 0’s from MSB. If x0 is 0, returns 0.
Equivalent to pure gcc sequence __builtin_clrsb((x))
| x | Argument |
Referenced by __CLB(), and gap8_clb().
| unsigned int __builtin_pulp_cnt | ( | int | x | ) |
Count number of bits at 1 in x.
Equivalent to pure gcc sequence __builtin_popcount((x))
| x | Argument |
| unsigned int __builtin_pulp_ff1 | ( | int | x | ) |
Bit position of the first bit set in x, starting from LSB. If bit 0 is set, returns 0. If only bit 31 is set, returns 31. If x is 0, returns 32.
Equivalent to pure gcc __builtin_ctz((x))
| x | Argument |
| unsigned int __builtin_pulp_fl1 | ( | int | x | ) |
Bit position of the last bit set in x starting from MSB. If bit 31 is set, returns 31. If only bit 0 is set returns 0. If x is 0, returns 32.
Equivalent to pure gcc sequence (31 - __builtin_clz((x)))
| x | Argument |
Referenced by __FL1(), and gap8_fl1().
| unsigned int __builtin_pulp_parity | ( | int | x | ) |
Returns x's parity.
Equivalent to pure gcc sequence __builtin_parity((x))
| x | Argument |
| int __builtin_pulp_rotr | ( | int | x | ) |
One bit right rotation
Available macros:
gap8_rotr(x, size, off)
__ROTR(x, size, off) | x | Argument |
Referenced by __ROTR(), and gap8_rotr().