OpenRISC (or1k) ELF relocation type definitions and helpers for LLEXT. More...

Macros
#define	R_OR1K_INSN_REL_26_MASK 0x03ffffffU
	OpenRISC relocation types.
#define	R_OR1K_IMM16_MASK 0x0000ffffU
	Mask for the 16-bit immediate field (bits [15:0]) - used by l.ori, l.addi, l.movhi, etc.
#define	R_OR1K_PG21_MASK 0x001fffffU
	Mask for the 21-bit page-relative field (bits [20:0]) - used by l.adrp.
#define	R_OR1K_SLO_FIELD_MASK 0x03e007ffU
	Split-immediate mask for OR1K store instructions.
#define	R_OR1K_SLO_PACK(insn, imm)
	Pack a 16-bit immediate into the OR1K split-immediate store format.
#define	R_OR1K_PAGE_SIZE 8192U
	OR1K page size for PCREL_PG21 relocations (8 KB = 2^13).
#define	R_OR1K_PAGE_MASK (~(R_OR1K_PAGE_SIZE - 1U))
	OR1K page mask for PCREL_PG21 relocations (8 KB aligned).

Detailed Description

OpenRISC (or1k) ELF relocation type definitions and helpers for LLEXT.

Macro Definition Documentation

◆ R_OR1K_IMM16_MASK

#define R_OR1K_IMM16_MASK 0x0000ffffU

Mask for the 16-bit immediate field (bits [15:0]) - used by l.ori, l.addi, l.movhi, etc.

◆ R_OR1K_INSN_REL_26_MASK

#define R_OR1K_INSN_REL_26_MASK 0x03ffffffU

OpenRISC relocation types.

From the official OR1K ELF specification and binutils.

OR1K instruction field masks

OR1K instructions are fixed 32-bit, big-endian. Immediate fields are located in the low bits of the instruction word. Mask for the 26-bit jump/branch target field (bits [25:0])

◆ R_OR1K_PAGE_MASK

#define R_OR1K_PAGE_MASK (~(R_OR1K_PAGE_SIZE - 1U))

OR1K page mask for PCREL_PG21 relocations (8 KB aligned).

◆ R_OR1K_PAGE_SIZE

#define R_OR1K_PAGE_SIZE 8192U

OR1K page size for PCREL_PG21 relocations (8 KB = 2^13).

◆ R_OR1K_PG21_MASK

#define R_OR1K_PG21_MASK 0x001fffffU

Mask for the 21-bit page-relative field (bits [20:0]) - used by l.adrp.

◆ R_OR1K_SLO_FIELD_MASK

#define R_OR1K_SLO_FIELD_MASK 0x03e007ffU

Split-immediate mask for OR1K store instructions.

Store instructions (l.sw, l.sb, l.sh) encode a 16-bit signed immediate split across two non-contiguous fields:

Bits [15:11] of the immediate → instruction bits [25:21]
Bits [10:0] of the immediate → instruction bits [10:0]

The combined field mask is 0x03E007FF.

◆ R_OR1K_SLO_PACK

#define R_OR1K_SLO_PACK	(		insn,
			imm )

Value:

(((insn) & ~R_OR1K_SLO_FIELD_MASK) | \
 (((uint32_t)(imm) & 0xf800U) << 10) | \
 ((uint32_t)(imm) & 0x07ffU))

Pack a 16-bit immediate into the OR1K split-immediate store format.

Parameters

insn	The existing 32-bit instruction word
imm	The 16-bit immediate value to pack

Returns: The instruction word with the immediate inserted

Macros