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Re: bignum branch
From: |
Andy Moreton |
Subject: |
Re: bignum branch |
Date: |
Sat, 11 Aug 2018 19:15:08 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (windows-nt) |
On Sat 11 Aug 2018, Eli Zaretskii wrote:
>> From: Andy Moreton <address@hidden>
>> Date: Sat, 11 Aug 2018 18:56:15 +0100
>>
>> > What do the following GDB commands show, in the crashing build?
>> >
>> > (gdb) disassemble __gmpz_popcount
>> > (gdb) ptype __gmpz_popcount
>> > (gdb) ptype __gmpn_popcount
>>
>> Nothing useful :-(
>
> What about
>
> (gdb) disassemble Flogcount
(gdb) disas Flogcount
Dump of assembler code for function Flogcount:
0x000000040016e2de <+0>: push %rsi
0x000000040016e2df <+1>: push %rbx
0x000000040016e2e0 <+2>: sub $0x38,%rsp
0x000000040016e2e4 <+6>: mov %rcx,%rbx
0x000000040016e2e7 <+9>: mov 0x53d252(%rip),%rax # 0x4006ab540
<.refptr.suppress_checking>
0x000000040016e2ee <+16>: cmpb $0x0,(%rax)
0x000000040016e2f1 <+19>: je 0x40016e317 <Flogcount+57>
0x000000040016e2f3 <+21>: mov %ebx,%eax
0x000000040016e2f5 <+23>: and $0x3,%eax
0x000000040016e2f8 <+26>: cmp $0x2,%eax
0x000000040016e2fb <+29>: je 0x40016e36a <Flogcount+140>
0x000000040016e2fd <+31>: mov %ebx,%eax
0x000000040016e2ff <+33>: and $0x7,%eax
0x000000040016e302 <+36>: cmp $0x1,%eax
0x000000040016e305 <+39>: je 0x40016e34d <Flogcount+111>
0x000000040016e307 <+41>: mov $0x0,%eax
0x000000040016e30c <+46>: test %eax,%eax
0x000000040016e30e <+48>: je 0x40016e36f <Flogcount+145>
0x000000040016e310 <+50>: mov $0x1,%eax
0x000000040016e315 <+55>: jmp 0x40016e36f <Flogcount+145>
0x000000040016e317 <+57>: mov $0xc010,%ecx
0x000000040016e31c <+62>: callq 0x4000e6466 <XSYMBOL>
0x000000040016e321 <+67>: mov 0x53cd78(%rip),%rsi # 0x4006ab0a0
<.refptr.lispsym>
0x000000040016e328 <+74>: lea 0xc010(%rsi),%rdx
0x000000040016e32f <+81>: cmp %rdx,%rax
0x000000040016e332 <+84>: je 0x40016e2f3 <Flogcount+21>
0x000000040016e334 <+86>: mov $0x3ad,%r8d
0x000000040016e33a <+92>: lea 0x51905f(%rip),%rdx # 0x4006873a0
<gdb_make_enums_visible+408>
0x000000040016e341 <+99>: lea 0x519144(%rip),%rcx # 0x40068748c
<gdb_make_enums_visible+644>
0x000000040016e348 <+106>: callq 0x400160fd4 <die>
0x000000040016e34d <+111>: mov %rbx,%rcx
0x000000040016e350 <+114>: callq 0x4000e9651 <XMISCANY>
0x000000040016e355 <+119>: cmpw $0x5eb1,(%rax)
0x000000040016e35a <+124>: je 0x40016e363 <Flogcount+133>
0x000000040016e35c <+126>: mov $0x0,%eax
0x000000040016e361 <+131>: jmp 0x40016e30c <Flogcount+46>
0x000000040016e363 <+133>: mov $0x1,%eax
0x000000040016e368 <+138>: jmp 0x40016e30c <Flogcount+46>
0x000000040016e36a <+140>: mov $0x1,%eax
0x000000040016e36f <+145>: test %eax,%eax
0x000000040016e371 <+147>: je 0x40016e3c6 <Flogcount+232>
0x000000040016e373 <+149>: mov %ebx,%eax
0x000000040016e375 <+151>: and $0x7,%eax
0x000000040016e378 <+154>: cmp $0x1,%eax
0x000000040016e37b <+157>: je 0x40016e3d3 <Flogcount+245>
0x000000040016e37d <+159>: mov $0x0,%eax
0x000000040016e382 <+164>: test %eax,%eax
0x000000040016e384 <+166>: jne 0x40016e3f0 <Flogcount+274>
0x000000040016e386 <+168>: mov 0x53d1b3(%rip),%rax # 0x4006ab540
<.refptr.suppress_checking>
0x000000040016e38d <+175>: cmpb $0x0,(%rax)
0x000000040016e390 <+178>: jne 0x40016e3a0 <Flogcount+194>
0x000000040016e392 <+180>: mov %ebx,%eax
0x000000040016e394 <+182>: and $0x3,%eax
0x000000040016e397 <+185>: cmp $0x2,%eax
0x000000040016e39a <+188>: jne 0x40016e49d <Flogcount+447>
0x000000040016e3a0 <+194>: mov %rbx,%rcx
0x000000040016e3a3 <+197>: sar $0x2,%rcx
0x000000040016e3a7 <+201>: js 0x40016e4b6 <Flogcount+472>
0x000000040016e3ad <+207>: callq 0x400286940 <__popcountdi2>
0x000000040016e3b2 <+212>: cltq
0x000000040016e3b4 <+214>: lea 0x2(,%rax,4),%rbx
0x000000040016e3bc <+222>: mov %rbx,%rax
0x000000040016e3bf <+225>: add $0x38,%rsp
0x000000040016e3c3 <+229>: pop %rbx
0x000000040016e3c4 <+230>: pop %rsi
0x000000040016e3c5 <+231>: retq
0x000000040016e3c6 <+232>: mov %rbx,%rdx
0x000000040016e3c9 <+235>: mov $0xc010,%ecx
0x000000040016e3ce <+240>: callq 0x40016c439 <wrong_type_argument>
0x000000040016e3d3 <+245>: mov %rbx,%rcx
0x000000040016e3d6 <+248>: callq 0x4000e9651 <XMISCANY>
0x000000040016e3db <+253>: cmpw $0x5eb1,(%rax)
0x000000040016e3e0 <+258>: je 0x40016e3e9 <Flogcount+267>
0x000000040016e3e2 <+260>: mov $0x0,%eax
0x000000040016e3e7 <+265>: jmp 0x40016e382 <Flogcount+164>
0x000000040016e3e9 <+267>: mov $0x1,%eax
0x000000040016e3ee <+272>: jmp 0x40016e382 <Flogcount+164>
0x000000040016e3f0 <+274>: mov %rbx,%rcx
0x000000040016e3f3 <+277>: callq 0x4000e9c29 <XBIGNUM>
0x000000040016e3f8 <+282>: mov 0x14(%rax),%edx
0x000000040016e3fb <+285>: test %edx,%edx
0x000000040016e3fd <+287>: js 0x40016e41d <Flogcount+319>
0x000000040016e3ff <+289>: jle 0x40016e416 <Flogcount+312>
0x000000040016e401 <+291>: mov 0x18(%rax),%rcx
0x000000040016e405 <+295>: callq 0x401e60494 <__imp___gmpn_popcount>
0x000000040016e40a <+300>: mov %eax,%eax
0x000000040016e40c <+302>: lea 0x2(,%rax,4),%rbx
0x000000040016e414 <+310>: jmp 0x40016e3bc <Flogcount+222>
0x000000040016e416 <+312>: mov $0x0,%eax
0x000000040016e41b <+317>: jmp 0x40016e40a <Flogcount+300>
0x000000040016e41d <+319>: lea 0x20(%rsp),%rsi
0x000000040016e422 <+324>: mov %rsi,%rcx
0x000000040016e425 <+327>: callq 0x400285308 <__gmpz_init>
0x000000040016e42a <+332>: mov %rbx,%rcx
0x000000040016e42d <+335>: callq 0x4000e9c29 <XBIGNUM>
0x000000040016e432 <+340>: lea 0x10(%rax),%rdx
0x000000040016e436 <+344>: cmp %rsi,%rdx
0x000000040016e439 <+347>: je 0x40016e445 <Flogcount+359>
0x000000040016e43b <+349>: lea 0x20(%rsp),%rcx
0x000000040016e440 <+354>: callq 0x4002852d0 <__gmpz_set>
0x000000040016e445 <+359>: mov 0x24(%rsp),%eax
0x000000040016e449 <+363>: neg %eax
0x000000040016e44b <+365>: mov %eax,0x24(%rsp)
0x000000040016e44f <+369>: lea 0x20(%rsp),%rcx
0x000000040016e454 <+374>: mov $0x1,%r8d
0x000000040016e45a <+380>: mov %rcx,%rdx
0x000000040016e45d <+383>: callq 0x4002852a0 <__gmpz_sub_ui>
0x000000040016e462 <+388>: mov 0x24(%rsp),%edx
0x000000040016e466 <+392>: test %edx,%edx
0x000000040016e468 <+394>: js 0x40016e496 <Flogcount+440>
0x000000040016e46a <+396>: mov $0x0,%eax
0x000000040016e46f <+401>: test %edx,%edx
0x000000040016e471 <+403>: jle 0x40016e47d <Flogcount+415>
0x000000040016e473 <+405>: mov 0x28(%rsp),%rcx
0x000000040016e478 <+410>: callq 0x401e60494 <__imp___gmpn_popcount>
0x000000040016e47d <+415>: mov %eax,%eax
0x000000040016e47f <+417>: lea 0x2(,%rax,4),%rbx
0x000000040016e487 <+425>: lea 0x20(%rsp),%rcx
0x000000040016e48c <+430>: callq 0x400285360 <__gmpz_clear>
0x000000040016e491 <+435>: jmpq 0x40016e3bc <Flogcount+222>
0x000000040016e496 <+440>: mov $0xffffffff,%eax
0x000000040016e49b <+445>: jmp 0x40016e46f <Flogcount+401>
0x000000040016e49d <+447>: mov $0xd1c,%r8d
0x000000040016e4a3 <+453>: lea 0x518e66(%rip),%rdx # 0x400687310
<gdb_make_enums_visible+264>
0x000000040016e4aa <+460>: lea 0x51911f(%rip),%rcx # 0x4006875d0
<gdb_make_enums_visible+968>
0x000000040016e4b1 <+467>: callq 0x400160fd4 <die>
0x000000040016e4b6 <+472>: not %rcx
0x000000040016e4b9 <+475>: jmpq 0x40016e3ad <Flogcount+207>
End of assembler dump.
- Re: bignum branch, (continued)
- Re: bignum branch, Andy Moreton, 2018/08/10
- Re: bignum branch, Eli Zaretskii, 2018/08/10
- Re: bignum branch, Andy Moreton, 2018/08/11
- Re: bignum branch, Tom Tromey, 2018/08/11
- Re: bignum branch, Eli Zaretskii, 2018/08/11
- Re: bignum branch, Eli Zaretskii, 2018/08/11
- Re: bignum branch, Andy Moreton, 2018/08/11
- Re: bignum branch, Eli Zaretskii, 2018/08/11
- Re: bignum branch, Andy Moreton, 2018/08/11
- Re: bignum branch, Eli Zaretskii, 2018/08/11
- Re: bignum branch,
Andy Moreton <=
- Re: bignum branch, Eli Zaretskii, 2018/08/11
- Re: bignum branch, Andy Moreton, 2018/08/11
- Re: bignum branch, Eli Zaretskii, 2018/08/12
- Re: bignum branch, Andy Moreton, 2018/08/12
- Re: bignum branch, Eli Zaretskii, 2018/08/13
- Re: bignum branch, Andy Moreton, 2018/08/13
- Re: bignum branch, Eli Zaretskii, 2018/08/14
- Re: bignum branch, Andy Moreton, 2018/08/14
- Re: bignum branch, Eli Zaretskii, 2018/08/14
- Re: bignum branch, Andy Moreton, 2018/08/14