Regenerating BPF target using the maintainer mode emits:
.../opcodes/bpf-opc.c:57:11: error: conversion from ‘long unsigned int’ to ‘unsigned int’ changes value from ‘18446744073709486335’ to ‘4294902015’ [-Werror=overflow]
57 | 64, 64, 0xffffffffffff00ff, { { F (F_IMM32) }, { F (F_OFFSET16) }, { F (F_SRCLE) }, { F (F_OP_CODE) }, { F (F_DSTLE) }, { F (F_OP_SRC) }, { F (F_OP_CLASS) }, { 0 } }
The use of a narrow size to handle the mask CGEN in instruction format
is causing this error. Additionally eBPF `call' instructions
constructed by expressions using symbols (BPF_PSEUDO_CALL) emits
annotations in `src' field of the instruction, used to identify BPF
target endianness.
cpu/
* bpf.cpu (define-call-insn): Remove `src' field from
instruction mask.
include/
*opcode/cge.h (CGEN_IFMT): Adjust mask bit width.
opcodes/
* bpf-opc.c: Regenerate.
Commit 04f096fb9e25 ("Move the xc16x target to the obsolete list") moved
the architecture from the "obsolete but still available" to the
"obsolete / support removed" list in config.bfd, making the architecture
impossible to enable (except maybe via "enable everything" options").
Note that I didn't touch */po/*.po{,t} on the assumption that these
would be updated by some (half)automatic means.
Currently, the get_disassembler() implementations for riscv, csky, and
rl78--and mep_print_insn() for mep--access ELF variants of union fields
without first checking that the bfd actually represents an ELF. This
causes undefined behavior and crashes when disassembling non-ELF files
(the "binary" BFD, for example). Fix that.
Commit f375d32b35ce changed a generated file. Edit the source instead.
* mep.opc (macros): Make static and const.
(lookup_macro): Return and use const pointer.
(expand_macro): Make mac param const.
(expand_string): Make pmacro const.
The gotha() relocation mnemonic will be outputted by OpenRISC GCC when
using the -mcmodel=large option. This relocation is used along with
got() to generate 32-bit GOT offsets. This increases the previous GOT
offset limit from the previous 16-bit (64K) limit.
This is needed on large binaries where the GOT grows larger than 64k.
bfd/ChangeLog:
PR 21464
* bfd-in2.h: Add BFD_RELOC_OR1K_GOT_AHI16 relocation.
* elf32-or1k.c (or1k_elf_howto_table, or1k_reloc_map): Likewise.
(or1k_final_link_relocate, or1k_elf_relocate_section,
or1k_elf_check_relocs): Likewise.
* libbfd.h (bfd_reloc_code_real_names): Likewise.
* reloc.c: Likewise.
cpu/ChangeLog:
PR 21464
* or1k.opc (or1k_imm16_relocs, parse_reloc): Define parse logic
for gotha() relocation.
include/ChangeLog:
PR 21464
* elf/or1k.h (elf_or1k_reloc_type): Define R_OR1K_GOT_AHI16 number.
opcodes/ChangeLog:
PR 21464
* or1k-asm.c: Regenerate.
gas/ChangeLog:
PR 21464
* testsuite/gas/or1k/reloc-1.s: Add test for new relocation.
* testsuite/gas/or1k/reloc-1.d: Add test result for new
relocation.
Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
fixup reloc, add tests
Add gas and opcodes support for two xBPF-exclusive ALU operations:
SDIV (signed division) and SMOD (signed modulo), and add tests for
them in gas.
cpu/
* bpf.cpu (insn-op-code-alu): Add SDIV and SMOD.
(define-alu-insn-bin, daib): Take ISAs as an argument.
(define-alu-instructions): Update calls to daib pmacro with
ISAs; add sdiv and smod.
gas/
* testsuite/gas/bpf/alu-xbpf.d: New file.
* testsuite/gas/bpf/alu-xbpf.s: Likewise.
* testsuite/gas/bpf/alu32-xbpf.d: Likewise.
* testsuite/gas/bpf/alu32-xbpf.d: Likewise.
* testuiste/gas/bpf/bpf.exp: Run new tests.
opcodes/
* bpf-desc.c: Regenerate.
* bpf-desc.h: Likewise.
* bpf-opc.c: Likewise.
* bpf-opc.h: Likewise.
The div and mod eBPF instructions are unsigned, but the semantic
specification for the simulator incorrectly used signed operators.
Correct them to unsigned versions, and correct the ALU tests in
the simulator (which incorrectly assumed signed semantics).
Tested in bpf-unknown-none.
cpu/ChangeLog:
2020-09-08 David Faust <david.faust@oracle.com>
* bpf.cpu (define-alu-instructions): Correct semantic operators
for div, mod to unsigned versions.
sim/ChangeLog:
2020-09-08 David Faust <david.faust@oracle.com>
* bpf/sem-be.c: Regenerate.
* bpf/sem-le.c: Likewise.
sim/testsuite/ChangeLog:
2020-09-08 David Faust <david.faust@oracle.com>
* sim/bpf/alu.s: Correct div and mod tests.
* sim/bpf/alu32.s: Likewise.
cpu/
* mep-core.cpu (f-8s8a2, f-12s4a2, f-17s16a2): Multiply signed
value by two rather than shifting left.
(f-24s5a2n): Similarly multiply signed f-24s5a2n-hi to extract.
opcodes/
* mep-ibld.c: Regenerate.
This patch adds support for xBPF, another ISA targetting the BPF
virtual architecture. For now, the primary difference between eBPF
and xBPF is that xBPF supports indirect calls through the
'call %reg' form of the call instruction.
bfd/
* archures.c (bfd_mach_xbpf): Define.
* bfd-in2.h: Regenerate.
* cpu-bpf.c (bfd_xbpf_arch) New.
(bfd_bpf_arch) Update next in list field to point to xbpf arch.
cpu/
* bpf.cpu (arch bpf): Add xbpf mach and isas.
(define-xbpf-isa) New pmacro.
(all-isas) Add xbpfle,xbpfbe.
(endian-isas): New pmacro.
(mach xbpf): New.
(model xbpf-def): Likewise.
(h-gpr): Add xbpf mach.
(f-dstle, f-srcle, dstle, srcle): Add xbpfle isa.
(f-dstbe, f-srcbe, dstbe, srcbe): Add xbpfbe isa.
(define-alu-insn-un): Use new endian-isas pmacro.
(define-alu-insn-bin, define-alu-insn-mov): Likewise.
(define-endian-insn, define-lddw): Likewise.
(dlind, dxli, dxsi, dsti): Likewise.
(define-cond-jump-insn, define-call-insn): Likewise.
(define-atomic-insns): Likewise.
gas/
* config/tc-bpf.c: Add option -mxbpf to select xbpf isa.
* testsuite/gas/bpf/indcall-1.d: New file.
* testsuite/gas/bpf/indcall-1.s: Likewise.
* testsuite/gas/bpf/indcall-bad-1.l: Likewise.
* testsuite/gas/bpf/indcall-bad-1.s: Likewise.
* testsuite/gas/bpf/bpf.exp: Run new tests.
opcodes/
* bpf-desc.c: Regenerate.
* bpf-desc.h: Likewise.
* bpf-opc.c: Likewise.
* bpf-opc.h: Likewise.
* disassemble.c (disassemble_init_for_target): Set bits for xBPF
ISA when appropriate.
Correct the type of the offset16 field to HI, and simplify memory
accesses which use it. Also update c-calls in semantics for a
few instructions.
cpu/ChangeLog:
2020-06-25 David Faust <david.faust@oracle.com>
* bpf.cpu (f-offset16): Change type from INT to HI.
(dxli): Simplify memory access.
(dxsi): Likewise.
(define-endian-insn): Update c-call in semantics.
(dlabs) Likewise.
(dlind) Likewise.
cpu/ChangeLog:
2020-06-02 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu (define-bpf-isa): Set base-insn-bitsize to 64.
* bpf.opc (bpf_print_insn): Do not set endian_code here.
gas/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* config/tc-bpf.c (md_begin): Pass CGEN_CPU_OPEN_INSN_ENDIAN to
bpf_cgen_cpu_open.
(md_assemble): Remove no longer needed hack.
opcodes/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* disassemble.c (disassemble_init_for_target): Set endian_code for
bpf targets.
* bpf-desc.c: Regenerate.
* bpf-opc.c: Likewise.
* bpf-dis.c: Likewise.
The CGEN support code in opcodes accesses instruction contents using a
couple of functions defined in cgen-opc.c: cgen_get_insn_value and
cgen_put_insn_value. These functions use the "instruction endianness"
in the CPU description to order the read/written bytes.
The process of writing an instruction to the object file is:
a) cgen_put_insn_value ;; Writes out the opcodes.
b) ARCH_cgen_insert_operand
insert_normal
insert_1
cgen_put_insn_value ;; Writes out the bytes of the
;; operand.
Likewise, the process of reading an instruction from the object file
is:
a) cgen_get_insn_value ;; Reads the opcodes.
b) ARCH_cgen_extract_operand
extract_normal
extract_1
cgen_get_insn_value ;; Reads in the bytes of the
;; operand.
As can be seen above, cgen_{get,put}_insn_value are used to both
process the instruction opcodes (the constant fields conforming the
base instruction) and also the values of the instruction operands,
such as immediates.
This is problematic for architectures in which the endianness of
instructions is different to the endianness of data. An example is
BPF, where instructions are always encoded big-endian but the data may
be either big or little.
This patch changes the cgen_{get,put}_insn_value functions in order to
get an extra argument with the endianness to use, and adapts the
existin callers to these functions in order to provide cd->endian or
cd->insn_endian, whatever appropriate. Callers like extract_1 and
insert_1 pass cd->endian (since they are reading/writing operand
values) while callers reading/writing the base instruction pass
cd->insn_endian instead.
A few little adjustments have been needed in some existing CGEN based
ports:
* The BPF assembler uses cgen_put_insn_value. It has been adapted to
pass the new endian argument.
* The mep port has code in mep.opc that uses cgen_{get,put}_insn_value.
It has been adapted to pass the new endianargument. Ditto for a
call in the assembler.
Tested with --enable-targets=all.
Regested in all supported targets.
No regressions.
include/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* opcode/cgen.h: Get an `endian' argument in both
cgen_get_insn_value and cgen_put_insn_value.
opcodes/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* cgen-opc.c (cgen_get_insn_value): Get an `endian' argument.
(cgen_put_insn_value): Likewise.
(cgen_lookup_insn): Pass endianness to cgen_{get,put}_insn_value.
* cgen-dis.in (print_insn): Likewise.
* cgen-ibld.in (insert_1): Likewise.
(insert_1): Likewise.
(insert_insn_normal): Likewise.
(extract_1): Likewise.
* bpf-dis.c: Regenerate.
* bpf-ibld.c: Likewise.
* bpf-ibld.c: Likewise.
* cgen-dis.in: Likewise.
* cgen-ibld.in: Likewise.
* cgen-opc.c: Likewise.
* epiphany-dis.c: Likewise.
* epiphany-ibld.c: Likewise.
* fr30-dis.c: Likewise.
* fr30-ibld.c: Likewise.
* frv-dis.c: Likewise.
* frv-ibld.c: Likewise.
* ip2k-dis.c: Likewise.
* ip2k-ibld.c: Likewise.
* iq2000-dis.c: Likewise.
* iq2000-ibld.c: Likewise.
* lm32-dis.c: Likewise.
* lm32-ibld.c: Likewise.
* m32c-dis.c: Likewise.
* m32c-ibld.c: Likewise.
* m32r-dis.c: Likewise.
* m32r-ibld.c: Likewise.
* mep-dis.c: Likewise.
* mep-ibld.c: Likewise.
* mt-dis.c: Likewise.
* mt-ibld.c: Likewise.
* or1k-dis.c: Likewise.
* or1k-ibld.c: Likewise.
* xc16x-dis.c: Likewise.
* xc16x-ibld.c: Likewise.
* xstormy16-dis.c: Likewise.
* xstormy16-ibld.c: Likewise.
gas/ChangeLog:
2020-06-04 Jose E. Marchesi <jose.marchesi@oracle.com>
* cgen.c (gas_cgen_finish_insn): Pass the endianness to
cgen_put_insn_value.
(gas_cgen_md_apply_fix): Likewise.
(gas_cgen_md_apply_fix): Likewise.
* config/tc-bpf.c (md_apply_fix): Pass data endianness to
cgen_put_insn_value.
* config/tc-mep.c (mep_check_ivc2_scheduling): Pass endianness to
cgen_put_insn_value.
cpu/ChangeLog:
2020-06-02 Jose E. Marchesi <jose.marchesi@oracle.com>
* mep.opc (print_slot_insn): Pass the insn endianness to
cgen_get_insn_value.
This patch adds semantic RTL descriptions to the eBPF instructions
defined in cpu/bpf.cpu. It also contains a couple of minor
improvements.
Tested in bpf-unknown-none targets.
No regressions.
cpu/ChangeLog:
2020-05-28 Jose E. Marchesi <jose.marchesi@oracle.com>
David Faust <david.faust@oracle.com>
* bpf.cpu (define-alu-insn-un): Add definitions of semantics.
(define-alu-insn-mov): Likewise.
(daib): Likewise.
(define-alu-instructions): Likewise.
(define-endian-insn): Likewise.
(define-lddw): Likewise.
(dlabs): Likewise.
(dlind): Likewise.
(dxli): Likewise.
(dxsi): Likewise.
(dsti): Likewise.
(define-ldstx-insns): Likewise.
(define-st-insns): Likewise.
(define-cond-jump-insn): Likewise.
(dcji): Likewise.
(define-condjump-insns): Likewise.
(define-call-insn): Likewise.
(ja): Likewise.
("exit"): Likewise.
(define-atomic-insns): Likewise.
(sem-exchange-and-add): New macro.
* bpf.cpu ("brkpt"): New instruction.
(bpfbf): Set word-bitsize to 32 and insn-endian big.
(h-gpr): Prefer r0 to `a' and r6 to `ctx'.
(h-pc): Expand definition.
* bpf.opc (bpf_print_insn): Set endian_code to BIG.
opcodes/ChangeLog:
2020-05-28 Jose E. Marchesi <jose.marchesi@oracle.com>
David Faust <david.faust@oracle.com>
* bpf-desc.c: Regenerate.
* bpf-opc.h: Likewise.
* bpf-opc.c: Likewise.
* bpf-dis.c: Likewise.
Reported by Rich Felker when building on 32-bit hosts. Backwards jump
negative offsets were not calculated correctly due to improper 32-bit
to 64-bit zero-extension. The 64-bit fields are present because we
are mixing 32-bit and 64-bit architectures in our cpu descriptions.
Removing 64-bit fixes the issue. We don't use 64-bit, there is an architecture
spec for 64-bit but no implementations or simulators. My thought is if
we need them in the future we should do the proper work to support both
32-bit and 64-bit implementations co-existing then.
cpu/ChangeLog:
yyyy-mm-dd Stafford Horne <shorne@gmail.com>
PR 25184
* or1k.cpu (arch or1k): Remove or64 and or64nd machs.
(ORBIS-MACHS, ORFPX32-MACHS): Remove pmacros.
(cpu or1k64bf, mach or64, mach or64nd): Remove definitions.
* or1kcommon.cpu (h-fdr): Remove hardware.
* or1korfpx.cpu (rDDF, rADF, rBDF): Remove operand definitions.
(float-regreg-insn): Remove lf- mnemonic -d instruction pattern.
(float-setflag-insn-base): Remove lf-sf mnemonic -d pattern.
(float-cust-insn): Remove "lf-cust" cust-num "-d" pattern.
(lf-rem-d, lf-itof-d, lf-ftoi-d, lf-madd-d): Remove.
Add support for the JMP32 class of eBPF instructions.
cpu/ChangeLog
* bpf.cpu (define-cond-jump-insn): Renamed from djci.
(dcji) New version with support for JMP32
gas/ChangeLog
* testsuite/gas/bpf/bpf.exp: Run jump32 tests.
* testsuite/gas/bpf/jump32.s: New file.
* testsuite/gas/bpf/jump32.d: Likewise.
opcodes/ChangeLog
* bpf-desc.c: Regenerate.
* bpf-desc.h: Likewise.
* bpf-opc.c: Regenerate.
* bpf-opc.h: Likewise.
More non-bugs flagged by ubsan, unless you happen to be compiling for
a 1's complement host.
cpu/
* frv.cpu (f-u12): Multiply rather than left shift signed values.
(f-label16, f-label24): Likewise.
opcodes/
* frv-ibld.c: Regenerate.
More nonsense fixing "bugs" with left shifts of signed values. Yes,
the C standard does say this is undefined (and right shifts of signed
values are implementation defined BTW) but in practice there is no
problem with current machines. 1's complement is a thing of the past.
cpu/
* m32c.cpu (f-src32-rn-unprefixed-QI): Shift before inverting.
(f-src32-rn-prefixed-QI, f-dst32-rn-unprefixed-QI): Likewise.
(f-dst32-rn-prefixed-QI): Likewise.
(f-dsp-32-s32): Mask before shifting left.
(f-dsp-48-u32, f-dsp-48-s32): Likewise.
(f-bitbase32-16-s11-unprefixed): Multiply signed field rather than
shifting left.
(f-bitbase32-24-s11-prefixed, f-bitbase32-24-s19-prefixed): Likewise.
(h-gr-SI): Mask before shifting.
opcodes/
* m32c-ibld.c: Regenerate.
This patch fixes the neg/neg32 BPF instructions, which have K (=0)
instead of X (=1) in their header source bit, despite operating on
registes.
cpu/ChangeLog:
2020-01-30 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu (define-alu-insn-un): The unary BPF instructions
(neg and neg32) use OP_SRC_K even if they operate only in
registers.
opcodes/ChangeLog:
2020-01-30 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf-opc.c: Regenerate.
gas/ChangeLog:
2020-01-30 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/bpf/alu.d: Update expected opcode for `neg'.
* testsuite/gas/bpf/alu-be.d: Likewise.
* testsuite/gas/bpf/alu32.d: Likewise for `neg32'.
* testsuite/gas/bpf/alu32-be.d: Likewise.
There are probably a lot more of these still here.
cpu/
* m32c.cpu (f-dsp-8-u16, f-dsp-8-s16): Rearrange to mask any sign
bits before shifting rather than masking after shifting.
(f-dsp-16-u16, f-dsp-16-s16, f-dsp-32-u16, f-dsp-32-s16): Likewise.
(f-dsp-40-u16, f-dsp-40-s16, f-dsp-48-u16, f-dsp-48-s16): Likewise.
(f-dsp-64-u16, f-dsp-8-s24): Likewise.
(f-bitbase32-16-s19-unprefixed): Avoid signed left shift.
opcodes/
* m32c-ibld.c: Regenerate.
Two places in epiphany_cgen_extract_operand, "value" is a long.
value = ((((value) << (1))) + (pc));
cpu/
* epiphany.cpu (f-simm8, f-simm24): Use multiply rather than
shift left to avoid UB on left shift of negative values.
opcodes/
* epiphany-ibld.c: Regenerate.
This patch changes the eBPF CPU description to prefer the register
names %r0 and %r6 instead of %a and %ctx when disassembling. This
matches better with the current practice, vs. cBPF.
It also updates the GAS tests in order to reflect this change.
Tested in a x86_64 host.
cpu/ChangeLog:
2019-07-19 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu (h-gpr): when disassembling, use %r0 and %r6 instead of
%a and %ctx.
opcodes/ChangeLog:
2019-07-19 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf-desc.c: Regenerated.
gas/ChangeLog:
2019-07-19 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/bpf/alu.d: Use %r6 instead of %ctx.
* testsuite/gas/bpf/lddw-be.d: Likewise.
* testsuite/gas/bpf/lddw.d: Likewise.
* testsuite/gas/bpf/alu-be.d: Likewise.
* testsuite/gas/bpf/alu32.d: Likewise.
This patch fixes the eBPF CPU description in order to reflect the
right explicit arguments passed to the ldabs{b,h,w,dw} instructions,
updates the corresponding GAS tests, and updates the BPF section of
the GAS manual.
cpu/ChangeLog:
2019-07-15 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu (dlabs): New pmacro.
(dlind): Likewise.
opcodes/ChangeLog:
2019-07-15 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf-desc.c: Regenerate.
* bpf-opc.c: Likewise.
* bpf-opc.h: Likewise.
gas/ChangeLog:
2019-07-15 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/bpf/mem.s: ldabs instructions do not take a `src'
register as an argument.
* testsuite/gas/bpf/mem.d: Updated accordingly.
* testsuite/gas/bpf/mem-be.d: Likewise.
* doc/c-bpf.texi (BPF Opcodes): Update to reflect the correct
explicit arguments to ldabs and ldind instructions.
The eBPF non-generic load instructions ldind{b,h,w,dw} and
ldabs{b,h,w,dw} do not take an explicit destination register as an
argument. Instead, they put the loaded value in %r0, implicitly.
This patch fixes the CPU BPF description to not expect a 'dst'
argument in these arguments, regenerates the corresponding files in
opcodes, and updates the impacted GAS tests.
Tested in a x86-64 host.
cpu/ChangeLog:
2019-07-14 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu (dlsi): ldabs and ldind instructions do not take an
explicit 'dst' argument.
opcodes/ChangeLog:
2019-07-14 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf-desc.c: Regenerate.
* bpf-opc.c: Likewise.
gas/ChangeLog:
2019-07-14 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/bpf/mem.s: Do not use explicit arguments for
ldabs and ldind instructions.
* testsuite/gas/bpf/mem.d: Updated accordingly.
* testsuite/gas/bpf/mem-be.d: Likewise.
The fpu compare symbols where not including 'sf' in the mnemonic. So
instead of `lf-sfeq` (implying set flag if operands are equal) we were
having `lf-eq`. This patch adds the 'sf'. This helps with making the
generated CGEN documentation consistent and ordered correctly.
cpu/ChangeLog:
yyyy-mm-dd Stafford Horne <shorne@gmail.com>
* or1korfpx.cpu (float-setflag-insn-base): Add 'sf' to symbol.
The 'nd' architectures did not mention what the 'nd' stands for.
Document that these mean 'no brach delay slot'.
cpu/ChangeLog:
yyyy-mm-dd Stafford Horne <shorne@gmail.com>
* or1k.cpu (or64nd, or32nd, or1200nd): Update comment.a
(l-adrp): Improve comment.
Add support for new floating point unordered comparisons. These have been
defined in OpenRISC architecture proposal 7[0] and are now included in the
architecture specification 1.3.
These new instructions provide the ability for floating point comparisons to
detect NaNs.
[0] https://openrisc.io/proposals/lfsf
cpu/ChangeLog:
yyyy-mm-dd Stafford Horne <shorne@gmail.com>
* or1korfpx.cpu (insn-opcode-float-regreg): Add SFUEQ_S, SFUNE_S,
SFUGT_S, SFUGE_S, SFULT_S, SFULE_S, SFUN_S, SFUEQ_D, SFUNE_D, SFUGT_D,
SFUGE_D, SFULT_D, SFULE_D, SFUN_D opcodes.
(float-setflag-insn-base): New pmacro based on float-setflag-insn.
(float-setflag-symantics, float-setflag-unordered-cmp-symantics,
float-setflag-unordered-symantics): New pmacro for instruction
symantics.
(float-setflag-insn): Update to use float-setflag-insn-base.
(float-setflag-unordered-insn): New pmacro for generating instructions.
This patch adds support for OpenRISC 64-bit FPU operations on 32-bit cores by
using register pairs. The functionality has been added to OpenRISC architecture
specification version 1.3 as per architecture proposal 14[0].
For supporting assembly of both 64-bit and 32-bit precision instructions we have
defined CGEN_VALIDATE_INSN_SUPPORTED. This allows cgen to use 64-bit bit
architecture assembly parsing on 64-bit toolchains and 32-bit architecture
assembly parsing on 32-bit toolchains. Without this the assembler has issues
parsing register pairs.
This patch also contains a few fixes to the symantics for existing OpenRISC
single and double precision FPU operations.
[0] https://openrisc.io/proposals/orfpx64a32
cpu/ChangeLog:
yyyy-mm-dd Andrey Bacherov <avbacherov@opencores.org>
Stafford Horne <shorne@gmail.com>
* or1k.cpu (ORFPX64A32-MACHS): New pmacro.
(ORFPX-MACHS): Removed pmacro.
* or1k.opc (or1k_cgen_insn_supported): New function.
(CGEN_VALIDATE_INSN_SUPPORTED): Define macro.
(parse_regpair, print_regpair): New functions.
* or1kcommon.cpu (h-spr, spr-shift, spr-address, h-gpr): Reorder
and add comments.
(h-fdr): Update comment to indicate or64.
(reg-pair-reg-lo, reg-pair-reg-hi): New pmacros for register pairs.
(h-fd32r): New hardware for 64-bit fpu registers.
(h-i64r): New hardware for 64-bit int registers.
* or1korbis.cpu (f-resv-8-1): New field.
* or1korfpx.cpu (rDSF, rASF, rBSF): Update attribute to ORFPX32-MACHS.
(rDDF, rADF, rBDF): Update operand comment to indicate or64.
(f-rdoff-10-1, f-raoff-9-1, f-rboff-8-1): New fields.
(h-roff1): New hardware.
(double-field-and-ops mnemonic): New pmacro to generate operations
rDD32F, rAD32F, rBD32F, rDDI and rADI.
(float-regreg-insn): Update single precision generator to MACH
ORFPX32-MACHS. Add generator for or32 64-bit instructions.
(float-setflag-insn): Update single precision generator to MACH
ORFPX32-MACHS. Fix double instructions from single to double
precision. Add generator for or32 64-bit instructions.
(float-cust-insn cust-num): Update single precision generator to MACH
ORFPX32-MACHS. Add generator for or32 64-bit instructions.
(lf-rem-s, lf-itof-s, lf-ftoi-s, lf-madd-s): Update MACH to
ORFPX32-MACHS.
(lf-rem-d): Fix operation from mod to rem.
(lf-rem-d32, lf-itof-d32, lf-ftoi-d32, lf-madd-d32): New instruction.
(lf-itof-d): Fix operands from single to double.
(lf-ftoi-d): Update operand mode from DI to WI.
This patch adds a CPU description for the Linux kernel eBPF virtual
machine, plus supporting code for disassembler and assembler.
cpu/ChangeLog:
2019-05-23 Jose E. Marchesi <jose.marchesi@oracle.com>
* bpf.cpu: New file.
* bpf.opc: Likewise.
