Mercurial > pub > dyncall > dyncall
diff doc/disas_examples/sparc.sparc.disas @ 499:fc614cb865c6
- doc and disasexample additions specific to non-trivial C++ aggregates as return values (incl. fixes to doc and additional LSB specific PPC32 section)
| author | Tassilo Philipp |
|---|---|
| date | Mon, 04 Apr 2022 15:50:52 +0200 |
| parents | cb19b2fe2422 |
| children |
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--- a/doc/disas_examples/sparc.sparc.disas Wed Mar 23 15:33:09 2022 +0100 +++ b/doc/disas_examples/sparc.sparc.disas Mon Apr 04 15:50:52 2022 +0200 @@ -1081,5 +1081,84 @@ +; ---------- C++ trivial and non-trivial aggrs as return values ----------> +; +; struct Trivial { int a; }; +; struct NonTrivial { int a; NonTrivial() : a(0) {} NonTrivial(const NonTrivial& rhs) : a(rhs.a) { } }; +; +; extern "C" { +; struct Trivial f1() { return Trivial(); } +; } +; +; struct NonTrivial f2() { return NonTrivial(); } +; +; extern "C" { +; void f() +; { +; int a=1; +; a += 123; +; struct Trivial t = f1(); +; a -= 123; +; struct NonTrivial n = f2(); +; a -= 12; +; } +; } + + + +; output from debian-4.0_r3-sparc w/ gcc 4.1.2 + +00010504 <f1>: + 10504: 9d e3 bf 98 save %sp, -104, %sp + 10508: c2 07 a0 40 ld [ %fp + 0x40 ], %g1 + 1050c: c0 20 40 00 clr [ %g1 ] + 10510: b0 10 00 01 mov %g1, %i0 + 10514: 81 e8 00 00 restore + 10518: 81 c3 e0 0c jmp %o7 + 0xc + 1051c: 01 00 00 00 nop + +00010520 <_Z2f2v>: + 10520: 9d e3 bf 98 save %sp, -104, %sp + 10524: e0 07 a0 40 ld [ %fp + 0x40 ], %l0 + 10528: 82 10 00 10 mov %l0, %g1 + 1052c: 90 10 00 01 mov %g1, %o0 + 10530: 40 00 00 29 call 105d4 <_ZN10NonTrivialC1Ev> + 10534: 01 00 00 00 nop + 10538: b0 10 00 10 mov %l0, %i0 + 1053c: 81 e8 00 00 restore + 10540: 81 c3 e0 0c jmp %o7 + 0xc + 10544: 01 00 00 00 nop + +00010548 <f>: + 10548: 9d e3 bf 80 save %sp, -128, %sp ; + 1054c: 82 10 20 01 mov 1, %g1 ; + 10550: c2 27 bf f4 st %g1, [ %fp + -12 ] ; + 10554: c2 07 bf f4 ld [ %fp + -12 ], %g1 ; + 10558: 82 00 60 7b add %g1, 0x7b, %g1 ; + 1055c: c2 27 bf f4 st %g1, [ %fp + -12 ] ; + 10560: 82 07 bf e4 add %fp, -28, %g1 ; + 10564: c2 23 a0 40 st %g1, [ %sp + 0x40 ] ; ptr to retval space as hidden stack param (sp+64) + 10568: 7f ff ff e7 call 10504 <f1> ; call f1() + 1056c: 01 00 00 00 nop ; + 10570: 00 00 00 04 unimp 0x4 ; + 10574: c2 07 bf e4 ld [ %fp + -28 ], %g1 ; + 10578: c2 27 bf f0 st %g1, [ %fp + -16 ] ; + 1057c: c2 07 bf f4 ld [ %fp + -12 ], %g1 ; + 10580: 82 00 7f 85 add %g1, -123, %g1 ; + 10584: c2 27 bf f4 st %g1, [ %fp + -12 ] ; + 10588: 82 07 bf ec add %fp, -20, %g1 ; + 1058c: c2 23 a0 40 st %g1, [ %sp + 0x40 ] ; ptr to retval space as hidden stack param (sp+64) + 10590: 7f ff ff e4 call 10520 <_Z2f2v> ; call f2() + 10594: 01 00 00 00 nop ; + 10598: 00 00 00 04 unimp 0x4 ; + 1059c: c2 07 bf f4 ld [ %fp + -12 ], %g1 ; + 105a0: 82 00 7f f4 add %g1, -12, %g1 ; + 105a4: c2 27 bf f4 st %g1, [ %fp + -12 ] ; + 105a8: 81 e8 00 00 restore ; + 105ac: 81 c3 e0 08 retl ; + 105b0: 01 00 00 00 nop ; + + + ; vim: ft=asm