From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- arch/parisc/math-emu/sgl_float.h | 473 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 473 insertions(+) create mode 100644 arch/parisc/math-emu/sgl_float.h (limited to 'arch/parisc/math-emu/sgl_float.h') diff --git a/arch/parisc/math-emu/sgl_float.h b/arch/parisc/math-emu/sgl_float.h new file mode 100644 index 000000000..6ec2662cc --- /dev/null +++ b/arch/parisc/math-emu/sgl_float.h @@ -0,0 +1,473 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Linux/PA-RISC Project (http://www.parisc-linux.org/) + * + * Floating-point emulation code + * Copyright (C) 2001 Hewlett-Packard (Paul Bame) + */ + +#ifdef __NO_PA_HDRS + PA header file -- do not include this header file for non-PA builds. +#endif + +/* 32-bit word grabbing functions */ +#define Sgl_firstword(value) Sall(value) +#define Sgl_secondword(value) dummy_location +#define Sgl_thirdword(value) dummy_location +#define Sgl_fourthword(value) dummy_location + +#define Sgl_sign(object) Ssign(object) +#define Sgl_exponent(object) Sexponent(object) +#define Sgl_signexponent(object) Ssignexponent(object) +#define Sgl_mantissa(object) Smantissa(object) +#define Sgl_exponentmantissa(object) Sexponentmantissa(object) +#define Sgl_all(object) Sall(object) + +/* sgl_and_signs ANDs the sign bits of each argument and puts the result + * into the first argument. sgl_or_signs ors those same sign bits */ +#define Sgl_and_signs( src1dst, src2) \ + Sall(src1dst) = (Sall(src2)|~((unsigned int)1<<31)) & Sall(src1dst) +#define Sgl_or_signs( src1dst, src2) \ + Sall(src1dst) = (Sall(src2)&((unsigned int)1<<31)) | Sall(src1dst) + +/* The hidden bit is always the low bit of the exponent */ +#define Sgl_clear_exponent_set_hidden(srcdst) Deposit_sexponent(srcdst,1) +#define Sgl_clear_signexponent_set_hidden(srcdst) \ + Deposit_ssignexponent(srcdst,1) +#define Sgl_clear_sign(srcdst) Sall(srcdst) &= ~((unsigned int)1<<31) +#define Sgl_clear_signexponent(srcdst) Sall(srcdst) &= 0x007fffff + +/* varamount must be less than 32 for the next three functions */ +#define Sgl_rightshift(srcdst, varamount) \ + Sall(srcdst) >>= varamount +#define Sgl_leftshift(srcdst, varamount) \ + Sall(srcdst) <<= varamount +#define Sgl_rightshift_exponentmantissa(srcdst, varamount) \ + Sall(srcdst) = \ + (Sexponentmantissa(srcdst) >> varamount) | \ + (Sall(srcdst) & ((unsigned int)1<<31)) + +#define Sgl_leftshiftby1_withextent(left,right,result) \ + Shiftdouble(Sall(left),Extall(right),31,Sall(result)) + +#define Sgl_rightshiftby1_withextent(left,right,dst) \ + Shiftdouble(Sall(left),Extall(right),1,Extall(right)) +#define Sgl_arithrightshiftby1(srcdst) \ + Sall(srcdst) = (int)Sall(srcdst) >> 1 + +/* Sign extend the sign bit with an integer destination */ +#define Sgl_signextendedsign(value) Ssignedsign(value) + +#define Sgl_isone_hidden(sgl_value) (Shidden(sgl_value)) +#define Sgl_increment(sgl_value) Sall(sgl_value) += 1 +#define Sgl_increment_mantissa(sgl_value) \ + Deposit_smantissa(sgl_value,sgl_value+1) +#define Sgl_decrement(sgl_value) Sall(sgl_value) -= 1 + +#define Sgl_isone_sign(sgl_value) (Is_ssign(sgl_value)!=0) +#define Sgl_isone_hiddenoverflow(sgl_value) \ + (Is_shiddenoverflow(sgl_value)!=0) +#define Sgl_isone_lowmantissa(sgl_value) (Is_slow(sgl_value)!=0) +#define Sgl_isone_signaling(sgl_value) (Is_ssignaling(sgl_value)!=0) +#define Sgl_is_signalingnan(sgl_value) (Ssignalingnan(sgl_value)==0x1ff) +#define Sgl_isnotzero(sgl_value) (Sall(sgl_value)!=0) +#define Sgl_isnotzero_hiddenhigh7mantissa(sgl_value) \ + (Shiddenhigh7mantissa(sgl_value)!=0) +#define Sgl_isnotzero_low4(sgl_value) (Slow4(sgl_value)!=0) +#define Sgl_isnotzero_exponent(sgl_value) (Sexponent(sgl_value)!=0) +#define Sgl_isnotzero_mantissa(sgl_value) (Smantissa(sgl_value)!=0) +#define Sgl_isnotzero_exponentmantissa(sgl_value) \ + (Sexponentmantissa(sgl_value)!=0) +#define Sgl_iszero(sgl_value) (Sall(sgl_value)==0) +#define Sgl_iszero_signaling(sgl_value) (Is_ssignaling(sgl_value)==0) +#define Sgl_iszero_hidden(sgl_value) (Is_shidden(sgl_value)==0) +#define Sgl_iszero_hiddenoverflow(sgl_value) \ + (Is_shiddenoverflow(sgl_value)==0) +#define Sgl_iszero_hiddenhigh3mantissa(sgl_value) \ + (Shiddenhigh3mantissa(sgl_value)==0) +#define Sgl_iszero_hiddenhigh7mantissa(sgl_value) \ + (Shiddenhigh7mantissa(sgl_value)==0) +#define Sgl_iszero_sign(sgl_value) (Is_ssign(sgl_value)==0) +#define Sgl_iszero_exponent(sgl_value) (Sexponent(sgl_value)==0) +#define Sgl_iszero_mantissa(sgl_value) (Smantissa(sgl_value)==0) +#define Sgl_iszero_exponentmantissa(sgl_value) \ + (Sexponentmantissa(sgl_value)==0) +#define Sgl_isinfinity_exponent(sgl_value) \ + (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT) +#define Sgl_isnotinfinity_exponent(sgl_value) \ + (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT) +#define Sgl_isinfinity(sgl_value) \ + (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \ + Sgl_mantissa(sgl_value)==0) +#define Sgl_isnan(sgl_value) \ + (Sgl_exponent(sgl_value)==SGL_INFINITY_EXPONENT && \ + Sgl_mantissa(sgl_value)!=0) +#define Sgl_isnotnan(sgl_value) \ + (Sgl_exponent(sgl_value)!=SGL_INFINITY_EXPONENT || \ + Sgl_mantissa(sgl_value)==0) +#define Sgl_islessthan(sgl_op1,sgl_op2) \ + (Sall(sgl_op1) < Sall(sgl_op2)) +#define Sgl_isgreaterthan(sgl_op1,sgl_op2) \ + (Sall(sgl_op1) > Sall(sgl_op2)) +#define Sgl_isnotlessthan(sgl_op1,sgl_op2) \ + (Sall(sgl_op1) >= Sall(sgl_op2)) +#define Sgl_isequal(sgl_op1,sgl_op2) \ + (Sall(sgl_op1) == Sall(sgl_op2)) + +#define Sgl_leftshiftby8(sgl_value) \ + Sall(sgl_value) <<= 8 +#define Sgl_leftshiftby4(sgl_value) \ + Sall(sgl_value) <<= 4 +#define Sgl_leftshiftby3(sgl_value) \ + Sall(sgl_value) <<= 3 +#define Sgl_leftshiftby2(sgl_value) \ + Sall(sgl_value) <<= 2 +#define Sgl_leftshiftby1(sgl_value) \ + Sall(sgl_value) <<= 1 +#define Sgl_rightshiftby1(sgl_value) \ + Sall(sgl_value) >>= 1 +#define Sgl_rightshiftby4(sgl_value) \ + Sall(sgl_value) >>= 4 +#define Sgl_rightshiftby8(sgl_value) \ + Sall(sgl_value) >>= 8 + +#define Sgl_ismagnitudeless(signlessleft,signlessright) \ +/* unsigned int signlessleft, signlessright; */ \ + (signlessleft < signlessright) + + +#define Sgl_copytoint_exponentmantissa(source,dest) \ + dest = Sexponentmantissa(source) + +/* A quiet NaN has the high mantissa bit clear and at least on other (in this + * case the adjacent bit) bit set. */ +#define Sgl_set_quiet(sgl_value) Deposit_shigh2mantissa(sgl_value,1) +#define Sgl_set_exponent(sgl_value,exp) Deposit_sexponent(sgl_value,exp) + +#define Sgl_set_mantissa(dest,value) Deposit_smantissa(dest,value) +#define Sgl_set_exponentmantissa(dest,value) \ + Deposit_sexponentmantissa(dest,value) + +/* An infinity is represented with the max exponent and a zero mantissa */ +#define Sgl_setinfinity_exponent(sgl_value) \ + Deposit_sexponent(sgl_value,SGL_INFINITY_EXPONENT) +#define Sgl_setinfinity_exponentmantissa(sgl_value) \ + Deposit_sexponentmantissa(sgl_value, \ + (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH)))) +#define Sgl_setinfinitypositive(sgl_value) \ + Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) +#define Sgl_setinfinitynegative(sgl_value) \ + Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) \ + | ((unsigned int)1<<31) +#define Sgl_setinfinity(sgl_value,sign) \ + Sall(sgl_value) = (SGL_INFINITY_EXPONENT << (32-(1+SGL_EXP_LENGTH))) | \ + ((unsigned int)sign << 31) +#define Sgl_sethigh4bits(sgl_value, extsign) \ + Deposit_shigh4(sgl_value,extsign) +#define Sgl_set_sign(sgl_value,sign) Deposit_ssign(sgl_value,sign) +#define Sgl_invert_sign(sgl_value) \ + Deposit_ssign(sgl_value,~Ssign(sgl_value)) +#define Sgl_setone_sign(sgl_value) Deposit_ssign(sgl_value,1) +#define Sgl_setone_lowmantissa(sgl_value) Deposit_slow(sgl_value,1) +#define Sgl_setzero_sign(sgl_value) Sall(sgl_value) &= 0x7fffffff +#define Sgl_setzero_exponent(sgl_value) Sall(sgl_value) &= 0x807fffff +#define Sgl_setzero_mantissa(sgl_value) Sall(sgl_value) &= 0xff800000 +#define Sgl_setzero_exponentmantissa(sgl_value) Sall(sgl_value) &= 0x80000000 +#define Sgl_setzero(sgl_value) Sall(sgl_value) = 0 +#define Sgl_setnegativezero(sgl_value) Sall(sgl_value) = (unsigned int)1 << 31 + +/* Use following macro for both overflow & underflow conditions */ +#define ovfl - +#define unfl + +#define Sgl_setwrapped_exponent(sgl_value,exponent,op) \ + Deposit_sexponent(sgl_value,(exponent op SGL_WRAP)) + +#define Sgl_setlargestpositive(sgl_value) \ + Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ + | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 ) +#define Sgl_setlargestnegative(sgl_value) \ + Sall(sgl_value) = ((SGL_EMAX+SGL_BIAS) << (32-(1+SGL_EXP_LENGTH))) \ + | ((1<<(32-(1+SGL_EXP_LENGTH))) - 1 ) \ + | ((unsigned int)1<<31) + +#define Sgl_setnegativeinfinity(sgl_value) \ + Sall(sgl_value) = \ + ((1<>= shift; \ + } \ + else { \ + Extall(extent) = Sall(srcdst); \ + Sall(srcdst) = 0; \ + } +#define Sgl_hiddenhigh3mantissa(sgl_value) Shiddenhigh3mantissa(sgl_value) +#define Sgl_hidden(sgl_value) Shidden(sgl_value) +#define Sgl_lowmantissa(sgl_value) Slow(sgl_value) + +/* The left argument is never smaller than the right argument */ +#define Sgl_subtract(sgl_left,sgl_right,sgl_result) \ + Sall(sgl_result) = Sall(sgl_left) - Sall(sgl_right) + +/* Subtract right augmented with extension from left augmented with zeros and + * store into result and extension. */ +#define Sgl_subtract_withextension(left,right,extent,result) \ + /* sgl_floating_point left,right,result; extension extent */ \ + Sgl_subtract(left,right,result); \ + if((Extall(extent) = 0-Extall(extent))) \ + Sall(result) = Sall(result)-1 + +#define Sgl_addition(sgl_left,sgl_right,sgl_result) \ + Sall(sgl_result) = Sall(sgl_left) + Sall(sgl_right) + +#define Sgl_xortointp1(left,right,result) \ + result = Sall(left) XOR Sall(right); + +#define Sgl_xorfromintp1(left,right,result) \ + Sall(result) = left XOR Sall(right) + +/* Need to Initialize */ +#define Sgl_makequietnan(dest) \ + Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \ + | (1<<(32-(1+SGL_EXP_LENGTH+2))) +#define Sgl_makesignalingnan(dest) \ + Sall(dest) = ((SGL_EMAX+SGL_BIAS)+1)<< (32-(1+SGL_EXP_LENGTH)) \ + | (1<<(32-(1+SGL_EXP_LENGTH+1))) + +#define Sgl_normalize(sgl_opnd,exponent) \ + while(Sgl_iszero_hiddenhigh7mantissa(sgl_opnd)) { \ + Sgl_leftshiftby8(sgl_opnd); \ + exponent -= 8; \ + } \ + if(Sgl_iszero_hiddenhigh3mantissa(sgl_opnd)) { \ + Sgl_leftshiftby4(sgl_opnd); \ + exponent -= 4; \ + } \ + while(Sgl_iszero_hidden(sgl_opnd)) { \ + Sgl_leftshiftby1(sgl_opnd); \ + exponent -= 1; \ + } + +#define Sgl_setoverflow(sgl_opnd) \ + /* set result to infinity or largest number */ \ + switch (Rounding_mode()) { \ + case ROUNDPLUS: \ + if (Sgl_isone_sign(sgl_opnd)) { \ + Sgl_setlargestnegative(sgl_opnd); \ + } \ + else { \ + Sgl_setinfinitypositive(sgl_opnd); \ + } \ + break; \ + case ROUNDMINUS: \ + if (Sgl_iszero_sign(sgl_opnd)) { \ + Sgl_setlargestpositive(sgl_opnd); \ + } \ + else { \ + Sgl_setinfinitynegative(sgl_opnd); \ + } \ + break; \ + case ROUNDNEAREST: \ + Sgl_setinfinity_exponentmantissa(sgl_opnd); \ + break; \ + case ROUNDZERO: \ + Sgl_setlargest_exponentmantissa(sgl_opnd); \ + } + +#define Sgl_denormalize(opnd,exponent,guard,sticky,inexact) \ + Sgl_clear_signexponent_set_hidden(opnd); \ + if (exponent >= (1 - SGL_P)) { \ + guard = (Sall(opnd) >> -exponent) & 1; \ + if (exponent < 0) sticky |= Sall(opnd) << (32+exponent); \ + inexact = guard | sticky; \ + Sall(opnd) >>= (1-exponent); \ + } \ + else { \ + guard = 0; \ + sticky |= Sall(opnd); \ + inexact = sticky; \ + Sgl_setzero(opnd); \ + } + +/* + * The fused multiply add instructions requires a single extended format, + * with 48 bits of mantissa. + */ +#define SGLEXT_THRESHOLD 48 + +#define Sglext_setzero(valA,valB) \ + Sextallp1(valA) = 0; Sextallp2(valB) = 0 + +#define Sglext_isnotzero_mantissap2(valB) (Sextallp2(valB)!=0) +#define Sglext_isone_lowp1(val) (Sextlowp1(val)!=0) +#define Sglext_isone_highp2(val) (Sexthighp2(val)!=0) +#define Sglext_isnotzero_low31p2(val) (Sextlow31p2(val)!=0) +#define Sglext_iszero(valA,valB) (Sextallp1(valA)==0 && Sextallp2(valB)==0) + +#define Sgl_copytoptr(src,destptr) *destptr = src +#define Sgl_copyfromptr(srcptr,dest) dest = *srcptr +#define Sglext_copy(srca,srcb,desta,destb) \ + Sextallp1(desta) = Sextallp1(srca); \ + Sextallp2(destb) = Sextallp2(srcb) +#define Sgl_copyto_sglext(src1,dest1,dest2) \ + Sextallp1(dest1) = Sall(src1); Sextallp2(dest2) = 0 + +#define Sglext_swap_lower(leftp2,rightp2) \ + Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \ + Sextallp2(rightp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2); \ + Sextallp2(leftp2) = Sextallp2(leftp2) XOR Sextallp2(rightp2) + +#define Sglext_setone_lowmantissap2(value) Deposit_dlowp2(value,1) + +/* The high bit is always zero so arithmetic or logical shifts will work. */ +#define Sglext_right_align(srcdstA,srcdstB,shift) \ + {int shiftamt, sticky; \ + shiftamt = shift % 32; \ + sticky = 0; \ + switch (shift/32) { \ + case 0: if (shiftamt > 0) { \ + sticky = Sextallp2(srcdstB) << 32 - (shiftamt); \ + Variable_shift_double(Sextallp1(srcdstA), \ + Sextallp2(srcdstB),shiftamt,Sextallp2(srcdstB)); \ + Sextallp1(srcdstA) >>= shiftamt; \ + } \ + break; \ + case 1: if (shiftamt > 0) { \ + sticky = (Sextallp1(srcdstA) << 32 - (shiftamt)) | \ + Sextallp2(srcdstB); \ + } \ + else { \ + sticky = Sextallp2(srcdstB); \ + } \ + Sextallp2(srcdstB) = Sextallp1(srcdstA) >> shiftamt; \ + Sextallp1(srcdstA) = 0; \ + break; \ + } \ + if (sticky) Sglext_setone_lowmantissap2(srcdstB); \ + } + +/* The left argument is never smaller than the right argument */ +#define Sglext_subtract(lefta,leftb,righta,rightb,resulta,resultb) \ + if( Sextallp2(rightb) > Sextallp2(leftb) ) Sextallp1(lefta)--; \ + Sextallp2(resultb) = Sextallp2(leftb) - Sextallp2(rightb); \ + Sextallp1(resulta) = Sextallp1(lefta) - Sextallp1(righta) + +#define Sglext_addition(lefta,leftb,righta,rightb,resulta,resultb) \ + /* If the sum of the low words is less than either source, then \ + * an overflow into the next word occurred. */ \ + if ((Sextallp2(resultb) = Sextallp2(leftb)+Sextallp2(rightb)) < \ + Sextallp2(rightb)) \ + Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta)+1; \ + else Sextallp1(resulta) = Sextallp1(lefta)+Sextallp1(righta) + + +#define Sglext_arithrightshiftby1(srcdstA,srcdstB) \ + Shiftdouble(Sextallp1(srcdstA),Sextallp2(srcdstB),1,Sextallp2(srcdstB)); \ + Sextallp1(srcdstA) = (int)Sextallp1(srcdstA) >> 1 + +#define Sglext_leftshiftby8(valA,valB) \ + Shiftdouble(Sextallp1(valA),Sextallp2(valB),24,Sextallp1(valA)); \ + Sextallp2(valB) <<= 8 +#define Sglext_leftshiftby4(valA,valB) \ + Shiftdouble(Sextallp1(valA),Sextallp2(valB),28,Sextallp1(valA)); \ + Sextallp2(valB) <<= 4 +#define Sglext_leftshiftby3(valA,valB) \ + Shiftdouble(Sextallp1(valA),Sextallp2(valB),29,Sextallp1(valA)); \ + Sextallp2(valB) <<= 3 +#define Sglext_leftshiftby2(valA,valB) \ + Shiftdouble(Sextallp1(valA),Sextallp2(valB),30,Sextallp1(valA)); \ + Sextallp2(valB) <<= 2 +#define Sglext_leftshiftby1(valA,valB) \ + Shiftdouble(Sextallp1(valA),Sextallp2(valB),31,Sextallp1(valA)); \ + Sextallp2(valB) <<= 1 + +#define Sglext_rightshiftby4(valueA,valueB) \ + Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),4,Sextallp2(valueB)); \ + Sextallp1(valueA) >>= 4 +#define Sglext_rightshiftby3(valueA,valueB) \ + Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),3,Sextallp2(valueB)); \ + Sextallp1(valueA) >>= 3 +#define Sglext_rightshiftby1(valueA,valueB) \ + Shiftdouble(Sextallp1(valueA),Sextallp2(valueB),1,Sextallp2(valueB)); \ + Sextallp1(valueA) >>= 1 + +#define Sglext_xortointp1(left,right,result) Sgl_xortointp1(left,right,result) +#define Sglext_xorfromintp1(left,right,result) \ + Sgl_xorfromintp1(left,right,result) +#define Sglext_copytoint_exponentmantissa(src,dest) \ + Sgl_copytoint_exponentmantissa(src,dest) +#define Sglext_ismagnitudeless(signlessleft,signlessright) \ + Sgl_ismagnitudeless(signlessleft,signlessright) + +#define Sglext_set_sign(dbl_value,sign) Sgl_set_sign(dbl_value,sign) +#define Sglext_clear_signexponent_set_hidden(srcdst) \ + Sgl_clear_signexponent_set_hidden(srcdst) +#define Sglext_clear_signexponent(srcdst) Sgl_clear_signexponent(srcdst) +#define Sglext_clear_sign(srcdst) Sgl_clear_sign(srcdst) +#define Sglext_isone_hidden(dbl_value) Sgl_isone_hidden(dbl_value) + +#define Sglext_denormalize(opndp1,opndp2,exponent,is_tiny) \ + {int sticky; \ + is_tiny = TRUE; \ + if (exponent == 0 && Sextallp2(opndp2)) { \ + switch (Rounding_mode()) { \ + case ROUNDPLUS: \ + if (Sgl_iszero_sign(opndp1)) \ + if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ + is_tiny = FALSE; \ + break; \ + case ROUNDMINUS: \ + if (Sgl_isone_sign(opndp1)) { \ + if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ + is_tiny = FALSE; \ + } \ + break; \ + case ROUNDNEAREST: \ + if (Sglext_isone_highp2(opndp2) && \ + (Sglext_isone_lowp1(opndp1) || \ + Sglext_isnotzero_low31p2(opndp2))) \ + if (Sgl_isone_hiddenoverflow(opndp1 + 1)) \ + is_tiny = FALSE; \ + break; \ + } \ + } \ + Sglext_clear_signexponent_set_hidden(opndp1); \ + if (exponent >= (1-DBL_P)) { \ + if (exponent >= -31) { \ + if (exponent > -31) { \ + sticky = Sextallp2(opndp2) << 31+exponent; \ + Variable_shift_double(opndp1,opndp2,1-exponent,opndp2); \ + Sextallp1(opndp1) >>= 1-exponent; \ + } \ + else { \ + sticky = Sextallp2(opndp2); \ + Sextallp2(opndp2) = Sextallp1(opndp1); \ + Sextallp1(opndp1) = 0; \ + } \ + } \ + else { \ + sticky = (Sextallp1(opndp1) << 31+exponent) | \ + Sextallp2(opndp2); \ + Sextallp2(opndp2) = Sextallp1(opndp1) >> -31-exponent; \ + Sextallp1(opndp1) = 0; \ + } \ + } \ + else { \ + sticky = Sextallp1(opndp1) | Sextallp2(opndp2); \ + Sglext_setzero(opndp1,opndp2); \ + } \ + if (sticky) Sglext_setone_lowmantissap2(opndp2); \ + exponent = 0; \ + } -- cgit v1.2.3