Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 370 insertions, 0 deletions

diff --git a/arch/m68k/fpsp040/scale.S b/arch/m68k/fpsp040/scale.S
new file mode 100644
index 000000000..04829dd4f
--- /dev/null
+++ b/arch/m68k/fpsp040/scale.S
@@ -0,0 +1,370 @@
+|
+|	scale.sa 3.3 7/30/91
+|
+|	The entry point sSCALE computes the destination operand
+|	scaled by the source operand.  If the absolute value of
+|	the source operand is (>= 2^14) an overflow or underflow
+|	is returned.
+|
+|	The entry point sscale is called from do_func to emulate
+|	the fscale unimplemented instruction.
+|
+|	Input: Double-extended destination operand in FPTEMP,
+|		double-extended source operand in ETEMP.
+|
+|	Output: The function returns scale(X,Y) to fp0.
+|
+|	Modifies: fp0.
+|
+|	Algorithm:
+|
+|		Copyright (C) Motorola, Inc. 1990
+|			All Rights Reserved
+|
+|       For details on the license for this file, please see the
+|       file, README, in this same directory.
+
+|SCALE    idnt    2,1 | Motorola 040 Floating Point Software Package
+
+	|section	8
+
+#include "fpsp.h"
+
+	|xref	t_ovfl2
+	|xref	t_unfl
+	|xref	round
+	|xref	t_resdnrm
+
+SRC_BNDS: .short	0x3fff,0x400c
+
+|
+| This entry point is used by the unimplemented instruction exception
+| handler.
+|
+|
+|
+|	FSCALE
+|
+	.global	sscale
+sscale:
+	fmovel		#0,%fpcr		|clr user enabled exc
+	clrl		%d1
+	movew		FPTEMP(%a6),%d1	|get dest exponent
+	smi		L_SCR1(%a6)	|use L_SCR1 to hold sign
+	andil		#0x7fff,%d1	|strip sign
+	movew		ETEMP(%a6),%d0	|check src bounds
+	andiw		#0x7fff,%d0	|clr sign bit
+	cmp2w		SRC_BNDS,%d0
+	bccs		src_in
+	cmpiw		#0x400c,%d0	|test for too large
+	bge		src_out
+|
+| The source input is below 1, so we check for denormalized numbers
+| and set unfl.
+|
+src_small:
+	moveb		DTAG(%a6),%d0
+	andib		#0xe0,%d0
+	tstb		%d0
+	beqs		no_denorm
+	st		STORE_FLG(%a6)	|dest already contains result
+	orl		#unfl_mask,USER_FPSR(%a6) |set UNFL
+den_done:
+	leal		FPTEMP(%a6),%a0
+	bra		t_resdnrm
+no_denorm:
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0	|simply return dest
+	rts
+
+
+|
+| Source is within 2^14 range.  To perform the int operation,
+| move it to d0.
+|
+src_in:
+	fmovex		ETEMP(%a6),%fp0	|move in src for int
+	fmovel		#rz_mode,%fpcr	|force rz for src conversion
+	fmovel		%fp0,%d0		|int src to d0
+	fmovel		#0,%FPSR		|clr status from above
+	tstw		ETEMP(%a6)	|check src sign
+	blt		src_neg
+|
+| Source is positive.  Add the src to the dest exponent.
+| The result can be denormalized, if src = 0, or overflow,
+| if the result of the add sets a bit in the upper word.
+|
+src_pos:
+	tstw		%d1		|check for denorm
+	beq		dst_dnrm
+	addl		%d0,%d1		|add src to dest exp
+	beqs		denorm		|if zero, result is denorm
+	cmpil		#0x7fff,%d1	|test for overflow
+	bges		ovfl
+	tstb		L_SCR1(%a6)
+	beqs		spos_pos
+	orw		#0x8000,%d1
+spos_pos:
+	movew		%d1,FPTEMP(%a6)	|result in FPTEMP
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0	|write result to fp0
+	rts
+ovfl:
+	tstb		L_SCR1(%a6)
+	beqs		sovl_pos
+	orw		#0x8000,%d1
+sovl_pos:
+	movew		FPTEMP(%a6),ETEMP(%a6)	|result in ETEMP
+	movel		FPTEMP_HI(%a6),ETEMP_HI(%a6)
+	movel		FPTEMP_LO(%a6),ETEMP_LO(%a6)
+	bra		t_ovfl2
+
+denorm:
+	tstb		L_SCR1(%a6)
+	beqs		den_pos
+	orw		#0x8000,%d1
+den_pos:
+	tstl		FPTEMP_HI(%a6)	|check j bit
+	blts		nden_exit	|if set, not denorm
+	movew		%d1,ETEMP(%a6)	|input expected in ETEMP
+	movel		FPTEMP_HI(%a6),ETEMP_HI(%a6)
+	movel		FPTEMP_LO(%a6),ETEMP_LO(%a6)
+	orl		#unfl_bit,USER_FPSR(%a6)	|set unfl
+	leal		ETEMP(%a6),%a0
+	bra		t_resdnrm
+nden_exit:
+	movew		%d1,FPTEMP(%a6)	|result in FPTEMP
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0	|write result to fp0
+	rts
+
+|
+| Source is negative.  Add the src to the dest exponent.
+| (The result exponent will be reduced).  The result can be
+| denormalized.
+|
+src_neg:
+	addl		%d0,%d1		|add src to dest
+	beqs		denorm		|if zero, result is denorm
+	blts		fix_dnrm	|if negative, result is
+|					;needing denormalization
+	tstb		L_SCR1(%a6)
+	beqs		sneg_pos
+	orw		#0x8000,%d1
+sneg_pos:
+	movew		%d1,FPTEMP(%a6)	|result in FPTEMP
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0	|write result to fp0
+	rts
+
+
+|
+| The result exponent is below denorm value.  Test for catastrophic
+| underflow and force zero if true.  If not, try to shift the
+| mantissa right until a zero exponent exists.
+|
+fix_dnrm:
+	cmpiw		#0xffc0,%d1	|lower bound for normalization
+	blt		fix_unfl	|if lower, catastrophic unfl
+	movew		%d1,%d0		|use d0 for exp
+	movel		%d2,-(%a7)	|free d2 for norm
+	movel		FPTEMP_HI(%a6),%d1
+	movel		FPTEMP_LO(%a6),%d2
+	clrl		L_SCR2(%a6)
+fix_loop:
+	addw		#1,%d0		|drive d0 to 0
+	lsrl		#1,%d1		|while shifting the
+	roxrl		#1,%d2		|mantissa to the right
+	bccs		no_carry
+	st		L_SCR2(%a6)	|use L_SCR2 to capture inex
+no_carry:
+	tstw		%d0		|it is finished when
+	blts		fix_loop	|d0 is zero or the mantissa
+	tstb		L_SCR2(%a6)
+	beqs		tst_zero
+	orl		#unfl_inx_mask,USER_FPSR(%a6)
+|					;set unfl, aunfl, ainex
+|
+| Test for zero. If zero, simply use fmove to return +/- zero
+| to the fpu.
+|
+tst_zero:
+	clrw		FPTEMP_EX(%a6)
+	tstb		L_SCR1(%a6)	|test for sign
+	beqs		tst_con
+	orw		#0x8000,FPTEMP_EX(%a6) |set sign bit
+tst_con:
+	movel		%d1,FPTEMP_HI(%a6)
+	movel		%d2,FPTEMP_LO(%a6)
+	movel		(%a7)+,%d2
+	tstl		%d1
+	bnes		not_zero
+	tstl		FPTEMP_LO(%a6)
+	bnes		not_zero
+|
+| Result is zero.  Check for rounding mode to set lsb.  If the
+| mode is rp, and the zero is positive, return smallest denorm.
+| If the mode is rm, and the zero is negative, return smallest
+| negative denorm.
+|
+	btstb		#5,FPCR_MODE(%a6) |test if rm or rp
+	beqs		no_dir
+	btstb		#4,FPCR_MODE(%a6) |check which one
+	beqs		zer_rm
+zer_rp:
+	tstb		L_SCR1(%a6)	|check sign
+	bnes		no_dir		|if set, neg op, no inc
+	movel		#1,FPTEMP_LO(%a6) |set lsb
+	bras		sm_dnrm
+zer_rm:
+	tstb		L_SCR1(%a6)	|check sign
+	beqs		no_dir		|if clr, neg op, no inc
+	movel		#1,FPTEMP_LO(%a6) |set lsb
+	orl		#neg_mask,USER_FPSR(%a6) |set N
+	bras		sm_dnrm
+no_dir:
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0	|use fmove to set cc's
+	rts
+
+|
+| The rounding mode changed the zero to a smallest denorm. Call
+| t_resdnrm with exceptional operand in ETEMP.
+|
+sm_dnrm:
+	movel		FPTEMP_EX(%a6),ETEMP_EX(%a6)
+	movel		FPTEMP_HI(%a6),ETEMP_HI(%a6)
+	movel		FPTEMP_LO(%a6),ETEMP_LO(%a6)
+	leal		ETEMP(%a6),%a0
+	bra		t_resdnrm
+
+|
+| Result is still denormalized.
+|
+not_zero:
+	orl		#unfl_mask,USER_FPSR(%a6) |set unfl
+	tstb		L_SCR1(%a6)	|check for sign
+	beqs		fix_exit
+	orl		#neg_mask,USER_FPSR(%a6) |set N
+fix_exit:
+	bras		sm_dnrm
+
+
+|
+| The result has underflowed to zero. Return zero and set
+| unfl, aunfl, and ainex.
+|
+fix_unfl:
+	orl		#unfl_inx_mask,USER_FPSR(%a6)
+	btstb		#5,FPCR_MODE(%a6) |test if rm or rp
+	beqs		no_dir2
+	btstb		#4,FPCR_MODE(%a6) |check which one
+	beqs		zer_rm2
+zer_rp2:
+	tstb		L_SCR1(%a6)	|check sign
+	bnes		no_dir2		|if set, neg op, no inc
+	clrl		FPTEMP_EX(%a6)
+	clrl		FPTEMP_HI(%a6)
+	movel		#1,FPTEMP_LO(%a6) |set lsb
+	bras		sm_dnrm		|return smallest denorm
+zer_rm2:
+	tstb		L_SCR1(%a6)	|check sign
+	beqs		no_dir2		|if clr, neg op, no inc
+	movew		#0x8000,FPTEMP_EX(%a6)
+	clrl		FPTEMP_HI(%a6)
+	movel		#1,FPTEMP_LO(%a6) |set lsb
+	orl		#neg_mask,USER_FPSR(%a6) |set N
+	bra		sm_dnrm		|return smallest denorm
+
+no_dir2:
+	tstb		L_SCR1(%a6)
+	bges		pos_zero
+neg_zero:
+	clrl		FP_SCR1(%a6)	|clear the exceptional operand
+	clrl		FP_SCR1+4(%a6)	|for gen_except.
+	clrl		FP_SCR1+8(%a6)
+	fmoves		#0x80000000,%fp0
+	rts
+pos_zero:
+	clrl		FP_SCR1(%a6)	|clear the exceptional operand
+	clrl		FP_SCR1+4(%a6)	|for gen_except.
+	clrl		FP_SCR1+8(%a6)
+	fmoves		#0x00000000,%fp0
+	rts
+
+|
+| The destination is a denormalized number.  It must be handled
+| by first shifting the bits in the mantissa until it is normalized,
+| then adding the remainder of the source to the exponent.
+|
+dst_dnrm:
+	moveml		%d2/%d3,-(%a7)
+	movew		FPTEMP_EX(%a6),%d1
+	movel		FPTEMP_HI(%a6),%d2
+	movel		FPTEMP_LO(%a6),%d3
+dst_loop:
+	tstl		%d2		|test for normalized result
+	blts		dst_norm	|exit loop if so
+	tstl		%d0		|otherwise, test shift count
+	beqs		dst_fin		|if zero, shifting is done
+	subil		#1,%d0		|dec src
+	lsll		#1,%d3
+	roxll		#1,%d2
+	bras		dst_loop
+|
+| Destination became normalized.  Simply add the remaining
+| portion of the src to the exponent.
+|
+dst_norm:
+	addw		%d0,%d1		|dst is normalized; add src
+	tstb		L_SCR1(%a6)
+	beqs		dnrm_pos
+	orl		#0x8000,%d1
+dnrm_pos:
+	movemw		%d1,FPTEMP_EX(%a6)
+	moveml		%d2,FPTEMP_HI(%a6)
+	moveml		%d3,FPTEMP_LO(%a6)
+	fmovel		USER_FPCR(%a6),%FPCR
+	fmovex		FPTEMP(%a6),%fp0
+	moveml		(%a7)+,%d2/%d3
+	rts
+
+|
+| Destination remained denormalized.  Call t_excdnrm with
+| exceptional operand in ETEMP.
+|
+dst_fin:
+	tstb		L_SCR1(%a6)	|check for sign
+	beqs		dst_exit
+	orl		#neg_mask,USER_FPSR(%a6) |set N
+	orl		#0x8000,%d1
+dst_exit:
+	movemw		%d1,ETEMP_EX(%a6)
+	moveml		%d2,ETEMP_HI(%a6)
+	moveml		%d3,ETEMP_LO(%a6)
+	orl		#unfl_mask,USER_FPSR(%a6) |set unfl
+	moveml		(%a7)+,%d2/%d3
+	leal		ETEMP(%a6),%a0
+	bra		t_resdnrm
+
+|
+| Source is outside of 2^14 range.  Test the sign and branch
+| to the appropriate exception handler.
+|
+src_out:
+	tstb		L_SCR1(%a6)
+	beqs		scro_pos
+	orl		#0x8000,%d1
+scro_pos:
+	movel		FPTEMP_HI(%a6),ETEMP_HI(%a6)
+	movel		FPTEMP_LO(%a6),ETEMP_LO(%a6)
+	tstw		ETEMP(%a6)
+	blts		res_neg
+res_pos:
+	movew		%d1,ETEMP(%a6)	|result in ETEMP
+	bra		t_ovfl2
+res_neg:
+	movew		%d1,ETEMP(%a6)	|result in ETEMP
+	leal		ETEMP(%a6),%a0
+	bra		t_unfl
+	|end