Hi Marius, * Marius Strobl <mar...@alchemy.franken.de>, 20120113 01:00: > Uhm, these are V8-specific, for V9 the C compiler frame size should > be 192 instead of 64 and the function alignment should be 32 instead > of 4 bytes (at least with GCC and US1-optimizations enabled as we > default to on sparc64), see <machine/asm.h>. However, given that > these functions only seem to obtain new register window for > debugging purposes you probably alternatively could just remove > the saves and the corresponding restores completely.
Any comments on the attached patch? Thanks, -- Ed Schouten <e...@80386.nl> WWW: http://80386.nl/
Index: modsi3.S =================================================================== --- modsi3.S (revision 230265) +++ modsi3.S (working copy) @@ -47,13 +47,13 @@ */ #include "../assembly.h" .text - .align 4 + .align 32 DEFINE_COMPILERRT_FUNCTION(__umodsi3) - save %sp,-64,%sp ! do this for debugging b divide mov 0,%g3 ! result always nonnegative +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__modsi3) - save %sp,-64,%sp ! do this for debugging orcc %o1,%o0,%g0 ! are either %o0 or %o1 negative bge divide ! if not, skip this junk mov %o0,%g3 ! record sign of result in sign of %g3 @@ -324,7 +324,6 @@ got_result: tst %g3 bge 1f - restore ! answer < 0 retl ! leaf-routine return neg %o3,%o0 ! remainder <- -%o3 Index: divmod.m4 =================================================================== --- divmod.m4 (revision 230265) +++ divmod.m4 (working copy) @@ -59,9 +59,6 @@ #include "../assembly.h" -.text - .align 4 - define(DEVELOP_QUOTIENT_BITS, ` !depth $1, accumulated bits $2 bl L.$1.eval(TWOSUPN+$2) @@ -84,12 +81,14 @@ ifelse( $1, 1, `9:') ') ifelse( ANSWER, `quotient', ` +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__udivsi3) - save %sp,-64,%sp ! do this for debugging b divide mov 0,SIGN ! result always nonnegative +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__divsi3) - save %sp,-64,%sp ! do this for debugging orcc divisor,dividend,%g0 ! are either dividend or divisor negative bge divide ! if not, skip this junk xor divisor,dividend,SIGN ! record sign of result in sign of SIGN @@ -104,12 +103,14 @@ neg dividend ! FALL THROUGH ',` +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__umodsi3) - save %sp,-64,%sp ! do this for debugging b divide mov 0,SIGN ! result always nonnegative +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__modsi3) - save %sp,-64,%sp ! do this for debugging orcc divisor,dividend,%g0 ! are either dividend or divisor negative bge divide ! if not, skip this junk mov dividend,SIGN ! record sign of result in sign of SIGN @@ -235,7 +236,6 @@ got_result: tst SIGN bge 1f - restore ! answer < 0 retl ! leaf-routine return ifelse( ANSWER, `quotient', Index: divsi3.S =================================================================== --- divsi3.S (revision 230265) +++ divsi3.S (working copy) @@ -47,13 +47,13 @@ */ #include "../assembly.h" .text - .align 4 + .align 32 DEFINE_COMPILERRT_FUNCTION(__udivsi3) - save %sp,-64,%sp ! do this for debugging b divide mov 0,%g3 ! result always nonnegative +.text + .align 32 DEFINE_COMPILERRT_FUNCTION(__divsi3) - save %sp,-64,%sp ! do this for debugging orcc %o1,%o0,%g0 ! are either %o0 or %o1 negative bge divide ! if not, skip this junk xor %o1,%o0,%g3 ! record sign of result in sign of %g3 @@ -324,7 +324,6 @@ got_result: tst %g3 bge 1f - restore ! answer < 0 retl ! leaf-routine return neg %o2,%o0 ! quotient <- -%o2
pgpgAxSRLGCYC.pgp
Description: PGP signature
