diff options
Diffstat (limited to 'arch/arm/net/bpf_jit_32.h')
| -rw-r--r-- | arch/arm/net/bpf_jit_32.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/arch/arm/net/bpf_jit_32.h b/arch/arm/net/bpf_jit_32.h new file mode 100644 index 00000000000..99ae5e3f46d --- /dev/null +++ b/arch/arm/net/bpf_jit_32.h @@ -0,0 +1,190 @@ +/* + * Just-In-Time compiler for BPF filters on 32bit ARM + * + * Copyright (c) 2011 Mircea Gherzan <mgherzan@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2 of the License. + */ + +#ifndef PFILTER_OPCODES_ARM_H +#define PFILTER_OPCODES_ARM_H + +#define ARM_R0 0 +#define ARM_R1 1 +#define ARM_R2 2 +#define ARM_R3 3 +#define ARM_R4 4 +#define ARM_R5 5 +#define ARM_R6 6 +#define ARM_R7 7 +#define ARM_R8 8 +#define ARM_R9 9 +#define ARM_R10 10 +#define ARM_FP 11 +#define ARM_IP 12 +#define ARM_SP 13 +#define ARM_LR 14 +#define ARM_PC 15 + +#define ARM_COND_EQ 0x0 +#define ARM_COND_NE 0x1 +#define ARM_COND_CS 0x2 +#define ARM_COND_HS ARM_COND_CS +#define ARM_COND_CC 0x3 +#define ARM_COND_LO ARM_COND_CC +#define ARM_COND_MI 0x4 +#define ARM_COND_PL 0x5 +#define ARM_COND_VS 0x6 +#define ARM_COND_VC 0x7 +#define ARM_COND_HI 0x8 +#define ARM_COND_LS 0x9 +#define ARM_COND_GE 0xa +#define ARM_COND_LT 0xb +#define ARM_COND_GT 0xc +#define ARM_COND_LE 0xd +#define ARM_COND_AL 0xe + +/* register shift types */ +#define SRTYPE_LSL 0 +#define SRTYPE_LSR 1 +#define SRTYPE_ASR 2 +#define SRTYPE_ROR 3 + +#define ARM_INST_ADD_R 0x00800000 +#define ARM_INST_ADD_I 0x02800000 + +#define ARM_INST_AND_R 0x00000000 +#define ARM_INST_AND_I 0x02000000 + +#define ARM_INST_BIC_R 0x01c00000 +#define ARM_INST_BIC_I 0x03c00000 + +#define ARM_INST_B 0x0a000000 +#define ARM_INST_BX 0x012FFF10 +#define ARM_INST_BLX_R 0x012fff30 + +#define ARM_INST_CMP_R 0x01500000 +#define ARM_INST_CMP_I 0x03500000 + +#define ARM_INST_LDRB_I 0x05d00000 +#define ARM_INST_LDRB_R 0x07d00000 +#define ARM_INST_LDRH_I 0x01d000b0 +#define ARM_INST_LDR_I 0x05900000 + +#define ARM_INST_LDM 0x08900000 + +#define ARM_INST_LSL_I 0x01a00000 +#define ARM_INST_LSL_R 0x01a00010 + +#define ARM_INST_LSR_I 0x01a00020 +#define ARM_INST_LSR_R 0x01a00030 + +#define ARM_INST_MOV_R 0x01a00000 +#define ARM_INST_MOV_I 0x03a00000 +#define ARM_INST_MOVW 0x03000000 +#define ARM_INST_MOVT 0x03400000 + +#define ARM_INST_MUL 0x00000090 + +#define ARM_INST_POP 0x08bd0000 +#define ARM_INST_PUSH 0x092d0000 + +#define ARM_INST_ORR_R 0x01800000 +#define ARM_INST_ORR_I 0x03800000 + +#define ARM_INST_REV 0x06bf0f30 +#define ARM_INST_REV16 0x06bf0fb0 + +#define ARM_INST_RSB_I 0x02600000 + +#define ARM_INST_SUB_R 0x00400000 +#define ARM_INST_SUB_I 0x02400000 + +#define ARM_INST_STR_I 0x05800000 + +#define ARM_INST_TST_R 0x01100000 +#define ARM_INST_TST_I 0x03100000 + +#define ARM_INST_UDIV 0x0730f010 + +#define ARM_INST_UMULL 0x00800090 + +/* register */ +#define _AL3_R(op, rd, rn, rm) ((op ## _R) | (rd) << 12 | (rn) << 16 | (rm)) +/* immediate */ +#define _AL3_I(op, rd, rn, imm) ((op ## _I) | (rd) << 12 | (rn) << 16 | (imm)) + +#define ARM_ADD_R(rd, rn, rm) _AL3_R(ARM_INST_ADD, rd, rn, rm) +#define ARM_ADD_I(rd, rn, imm) _AL3_I(ARM_INST_ADD, rd, rn, imm) + +#define ARM_AND_R(rd, rn, rm) _AL3_R(ARM_INST_AND, rd, rn, rm) +#define ARM_AND_I(rd, rn, imm) _AL3_I(ARM_INST_AND, rd, rn, imm) + +#define ARM_BIC_R(rd, rn, rm) _AL3_R(ARM_INST_BIC, rd, rn, rm) +#define ARM_BIC_I(rd, rn, imm) _AL3_I(ARM_INST_BIC, rd, rn, imm) + +#define ARM_B(imm24) (ARM_INST_B | ((imm24) & 0xffffff)) +#define ARM_BX(rm) (ARM_INST_BX | (rm)) +#define ARM_BLX_R(rm) (ARM_INST_BLX_R | (rm)) + +#define ARM_CMP_R(rn, rm) _AL3_R(ARM_INST_CMP, 0, rn, rm) +#define ARM_CMP_I(rn, imm) _AL3_I(ARM_INST_CMP, 0, rn, imm) + +#define ARM_LDR_I(rt, rn, off) (ARM_INST_LDR_I | (rt) << 12 | (rn) << 16 \ + | (off)) +#define ARM_LDRB_I(rt, rn, off) (ARM_INST_LDRB_I | (rt) << 12 | (rn) << 16 \ + | (off)) +#define ARM_LDRB_R(rt, rn, rm) (ARM_INST_LDRB_R | (rt) << 12 | (rn) << 16 \ + | (rm)) +#define ARM_LDRH_I(rt, rn, off) (ARM_INST_LDRH_I | (rt) << 12 | (rn) << 16 \ + | (((off) & 0xf0) << 4) | ((off) & 0xf)) + +#define ARM_LDM(rn, regs) (ARM_INST_LDM | (rn) << 16 | (regs)) + +#define ARM_LSL_R(rd, rn, rm) (_AL3_R(ARM_INST_LSL, rd, 0, rn) | (rm) << 8) +#define ARM_LSL_I(rd, rn, imm) (_AL3_I(ARM_INST_LSL, rd, 0, rn) | (imm) << 7) + +#define ARM_LSR_R(rd, rn, rm) (_AL3_R(ARM_INST_LSR, rd, 0, rn) | (rm) << 8) +#define ARM_LSR_I(rd, rn, imm) (_AL3_I(ARM_INST_LSR, rd, 0, rn) | (imm) << 7) + +#define ARM_MOV_R(rd, rm) _AL3_R(ARM_INST_MOV, rd, 0, rm) +#define ARM_MOV_I(rd, imm) _AL3_I(ARM_INST_MOV, rd, 0, imm) + +#define ARM_MOVW(rd, imm) \ + (ARM_INST_MOVW | ((imm) >> 12) << 16 | (rd) << 12 | ((imm) & 0x0fff)) + +#define ARM_MOVT(rd, imm) \ + (ARM_INST_MOVT | ((imm) >> 12) << 16 | (rd) << 12 | ((imm) & 0x0fff)) + +#define ARM_MUL(rd, rm, rn) (ARM_INST_MUL | (rd) << 16 | (rm) << 8 | (rn)) + +#define ARM_POP(regs) (ARM_INST_POP | (regs)) +#define ARM_PUSH(regs) (ARM_INST_PUSH | (regs)) + +#define ARM_ORR_R(rd, rn, rm) _AL3_R(ARM_INST_ORR, rd, rn, rm) +#define ARM_ORR_I(rd, rn, imm) _AL3_I(ARM_INST_ORR, rd, rn, imm) +#define ARM_ORR_S(rd, rn, rm, type, rs) \ + (ARM_ORR_R(rd, rn, rm) | (type) << 5 | (rs) << 7) + +#define ARM_REV(rd, rm) (ARM_INST_REV | (rd) << 12 | (rm)) +#define ARM_REV16(rd, rm) (ARM_INST_REV16 | (rd) << 12 | (rm)) + +#define ARM_RSB_I(rd, rn, imm) _AL3_I(ARM_INST_RSB, rd, rn, imm) + +#define ARM_SUB_R(rd, rn, rm) _AL3_R(ARM_INST_SUB, rd, rn, rm) +#define ARM_SUB_I(rd, rn, imm) _AL3_I(ARM_INST_SUB, rd, rn, imm) + +#define ARM_STR_I(rt, rn, off) (ARM_INST_STR_I | (rt) << 12 | (rn) << 16 \ + | (off)) + +#define ARM_TST_R(rn, rm) _AL3_R(ARM_INST_TST, 0, rn, rm) +#define ARM_TST_I(rn, imm) _AL3_I(ARM_INST_TST, 0, rn, imm) + +#define ARM_UDIV(rd, rn, rm) (ARM_INST_UDIV | (rd) << 16 | (rn) | (rm) << 8) + +#define ARM_UMULL(rd_lo, rd_hi, rn, rm) (ARM_INST_UMULL | (rd_hi) << 16 \ + | (rd_lo) << 12 | (rm) << 8 | rn) + +#endif /* PFILTER_OPCODES_ARM_H */ |