-- this was causing the LISTENER_ORDER$ signals after DIAG
-- also was causing HELP to fail sporadically (HELP MTRESUME)
removed TB_xxx flags (identical to T_xxx)
added some eap hints
changed to pop the concealed stack earlier
changed LDLR/LDAR to load result from RP if ea is 7
changed STLR/STAR to store result in RP if ea is 7
added new trace flags for GET/PUT (unimplemented)
reworked ring/register fix so that Primos nevers sees RP faulted
but we don't have to do extra tests in the fetch loop
changed EAxxx routines to use RP segno when EA = register
added FP exception fault to ieeepr8 and all FP routines
added round flag to ieeepr8 (though not sure it's rounding correctly)
used gcov info to reorder some stuff in ea16s, ea32s, ea32r64r
changed warn() and fatal() to use get16t; prevpc might be a register
IMPORTANT NOTE: to compile with -O0, also use -DNOREG (gcc bug)
changed ARGT to add ring bits to LB & SB in brsave[]
major TRACE update, to debug Information tsrc$$ problem
changed MAXMB default for non-OSX platforms (PS3) to 32MB
changed B(I,D)(X,Y) instructions to increment/decrement inside if;
(avoids reloading values to test them) and removed B(X,Y)NE macros
changed default cpuid to 15 so real time clock is always set
use ppa instead of ppn to avoid << 10 on every memory reference
changed newkeys() so illegal keys give illegal instruction vs fatal()
removed hack to patch Primos for rev 23 SSSN check
added code to SSSN to skip the check loop immediately following
removed #ifdef FAST from a few places, just use the faster code
added code to LDA trace to also display as two octal bytes
changed EXPCL macro to set and clear bits - not just set
changed shift instructions - made CLEARCL conditional; this
means keys are only updated once per shift, not twice
fixed prtn to update stack free pointer after values fetched
in case a fault occurs and prtn is restarted
changed prtn to invalidate brp cache only if ring changes
changed prtn to inline, to avoid register save/restore
changed argt to only update rp word offset in sf header
added hack to pcl to correct wrapped RP for cpu.pcl case 42
added cgt inline proc, used in 2 places; generates better code
(store to utempa is avoided altogether)
added pimh (also used for pima) inline proc to avoid stores
inlined invalidate_brp
changed add16 implementation while looking at code generated
ran faster according to Jeff's timers: 59/52 for old/new
changed get/put(16,32)r to check for ring change and use regular
get/put call if possible, so brp supercache can be used
FUTURE: could add separate brp cache entry for R0 accesses
changed ea32r64r live register test so normal path is first
changed ea64v live register test so normal path is first
change ea32i to use INCRP macro instead of RPL++
removed need for duplicated memcpy in pcl() (copying ecb)
inlined pclea for speed
FUTURE: would be nice to inline complex pcl/argt, but it's called
by CALF and ARGT instructions
added 2 new rbp entries for FAR0/1; used in ldc/stc
changed IMA and IRS back to use get/put16t to make use of
supercache instead of always doing 1 mapva
changed apea() to use brp[RPBR] for AP fetch, UNBR for indirect
added -DNOMEM to remove -mem command option and testing
fixed bug in STTM causing sporadic CPU times (negative deltas)
added get32m & put32m: these always map
changed get32 and put32 to be inlined
changed mem[] references to MEM[] to allow experiments
tried using register for MEM pointer - not so great
tried using register for instcount - screwed up (very sluggish)
Change tracing to show when supercache is used
Symbolic names for supercache entries
Added supercache entries for sector 0 and PB (different from RP)
Add invalidate_brp to invalidate supercache
Separate get16trap (WILL trap) from get16t (MIGHT trap)
Use supercache in get32 and various get/put routines
removed "char unmodified" from STLB; uses access[2] instead, to
avoid a multiply instruction in mapva (can use shift now)
use ea instead of pa when checking for page crossing in get32,
in preparation for read VA caching, like iget16 uses
changed gvp->prevppa from Prime memory offset to mem[] pointer
added inline to tch, tcr, adlr
added -DNOIDLE to make BDX use CPU cycles instead of sleeping
changed ea64v.h so ixy avoids branching (hot spot in Shark)
inlined and simplified iget16 instruction fetch
moved pio test to R-mode path
moved and simplified effective address calculation switch stmt
removed mode switch stmt for EA calcs, changed to cascaded if
moved iget16 static vars to gvp, for inlining
changed mapva and iget16 so that the normal path is predicted
added INCRP macro - now does 32-bit increments of RP for speed
added ADDRP macro to return RP incremented by n (CGT)
changed globals to static (didn't help speed much - thought it might)
moved around some functions
changed shift instructions to create bitmask at runtime (faster)
manually inlined mathexception (but used inline keyword in later revs)
changed get16/put16 to get16t/put16t where address trap might occur
this eliminates ea<0 test for all other non-trappable get16/put16 calls
changed crs & crsl to macros to reference a union vs 2 distinct variables
changed crs and RP to be register variables (regs.h)
fixed tape drive problems
sent to Garth around 8/15/07
supports 512MB memory
device "terminate" call
added XED emulation
more FP changes
changed devmt to emulate Kennedy tape drive & controller
devmt changes to support higher revs / fix bugs
added "smart" LRU code to handle multiple register sets
expanded registers to handle 8 user, 2 system (10 total)
turned off various process-exchange changes that were causing failures
only zero first 64K of memory
added emulation of ZTRN, ZED, and RTS
started I-mode floating point
make sure R-mode MPL faults to appease DIAG tests
added IOTLB, mapio, and get/put16io macros so rev23 would boot
changed device drivers to go through IOTLB, not STLB
removed SVC Primos II emulation code
changed floating point register format to match memory
huge hunk of 32I instructions
generalized SETCC and LCXX macros so I-mode can use them
fixed bug in LDC where A-reg was getting trashed at end of string
made macros for many instructions so I-mode can use them
forgot to close the boot file
