RHBZ 670646
plus, bonus <sys/sdt.h> patch for mysql buildability, as per http://comments.gmane.org/gmane.linux.redhat.fedora.devel/144887
This commit is contained in:
Stan Cox
Frank Ch. Eigler
parent
2ccdbd73c7
commit
063bce34cb
365
sdt-regtable.patch
Normal file
365
sdt-regtable.patch
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@ -0,0 +1,365 @@
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commit 46a94997388279d381e38a675411b99a202f339d
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Author: Stan Cox <scox@redhat.com>
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Date: Wed Jan 19 07:09:01 2011 -0500
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Switch to using a register width table instead of heuristic code.
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* tapsets.cxx (sdt_uprobe_var_expanding_visitor): Add DRI and regwidths.
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Change dwarf_regs to be a regname/regwidth pair. Change initializer.
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* (sdt_uprobe_var_expanding_visitor::visit_target_symbol): Use it.
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commit 9920f642a45f6425959bdf857543c90f2fcfd1e3
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Author: Stan Cox <scox@redhat.com>
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Date: Wed Jan 19 15:52:14 2011 -0500
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Allow sdt to avoid application defined min/max macros.
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* sdt.h: Surround limits inclusion with push_macro and pop_macro.
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commit ae1418f00b0bd242fbf169813be5800609d36892
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Author: Frank Ch. Eigler <fche@redhat.com>
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Date: Wed Jan 19 08:20:22 2011 -0500
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PR12411 cont'd: use enum type decl
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* tapsets.cxx (sdt_uprobe_var_expanding_visitor): Make regwidths
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an enum type decl, not an anonymous-enum-typed variable. Move
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DRI macro #define/#undef just around its use.
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diff --git a/tapsets.cxx b/tapsets.cxx
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index 23a5df2..b141921 100644
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--- a/tapsets.cxx
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+++ b/tapsets.cxx
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@@ -4650,6 +4650,7 @@ struct sdt_kprobe_var_expanding_visitor: public var_expanding_visitor
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struct sdt_uprobe_var_expanding_visitor: public var_expanding_visitor
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{
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+ enum regwidths {QI, QIh, HI, SI, DI};
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sdt_uprobe_var_expanding_visitor(systemtap_session& s,
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int elf_machine,
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const string & process_name,
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@@ -4665,66 +4666,139 @@ struct sdt_uprobe_var_expanding_visitor: public var_expanding_visitor
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/* Register name mapping table depends on the elf machine of this particular
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probe target process/file, not upon the host. So we can't just
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#ifdef _i686_ etc. */
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+
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+#define DRI(name,num,width) dwarf_regs[name]=make_pair(num,width)
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if (elf_machine == EM_X86_64) {
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- dwarf_regs["%rax"] = dwarf_regs["%eax"] = dwarf_regs["%ax"] = dwarf_regs["%al"] = dwarf_regs["%ah"] = 0;
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- dwarf_regs["%rdx"] = dwarf_regs["%edx"] = dwarf_regs["%dx"] = dwarf_regs["%dl"] = dwarf_regs["%dh"] = 1;
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- dwarf_regs["%rcx"] = dwarf_regs["%ecx"] = dwarf_regs["%cx"] = dwarf_regs["%cl"] = dwarf_regs["%ch"] = 2;
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- dwarf_regs["%rbx"] = dwarf_regs["%ebx"] = dwarf_regs["%bx"] = dwarf_regs["%bl"] = dwarf_regs["%bh"] = 3;
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- dwarf_regs["%rsi"] = dwarf_regs["%esi"] = dwarf_regs["%si"] = dwarf_regs["%sil"] = 4;
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- dwarf_regs["%rdi"] = dwarf_regs["%edi"] = dwarf_regs["%di"] = dwarf_regs["%dil"] = 5;
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- dwarf_regs["%rbp"] = dwarf_regs["%ebp"] = dwarf_regs["%bp"] = 6;
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- dwarf_regs["%rsp"] = dwarf_regs["%esp"] = dwarf_regs["%sp"] = 7;
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- dwarf_regs["%r8"] = dwarf_regs["%r8d"] = dwarf_regs["%r8w"] = dwarf_regs["%r8b"] = 8;
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- dwarf_regs["%r9"] = dwarf_regs["%r9d"] = dwarf_regs["%r9w"] = dwarf_regs["%r9b"] = 9;
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- dwarf_regs["%r10"] = dwarf_regs["%r10d"] = dwarf_regs["%r10w"] = dwarf_regs["%r10b"] = 10;
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- dwarf_regs["%r11"] = dwarf_regs["%r11d"] = dwarf_regs["%r11w"] = dwarf_regs["%r11b"] = 11;
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- dwarf_regs["%r12"] = dwarf_regs["%r12d"] = dwarf_regs["%r12w"] = dwarf_regs["%r12b"] = 12;
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- dwarf_regs["%r13"] = dwarf_regs["%r13d"] = dwarf_regs["%r13w"] = dwarf_regs["%r13b"] = 13;
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- dwarf_regs["%r14"] = dwarf_regs["%r14d"] = dwarf_regs["%r14w"] = dwarf_regs["%r14b"] = 14;
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- dwarf_regs["%r15"] = dwarf_regs["%r15d"] = dwarf_regs["%r15w"] = dwarf_regs["%r15b"] = 15;
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+ DRI ("%rax", 0, DI); DRI ("%eax", 0, SI); DRI ("%ax", 0, HI);
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+ DRI ("%al", 0, QI); DRI ("%ah", 0, QIh);
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+ DRI ("%rdx", 1, DI); DRI ("%edx", 1, SI); DRI ("%dx", 1, HI);
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+ DRI ("%dl", 1, QI); DRI ("%dh", 1, QIh);
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+ DRI ("%rcx", 2, DI); DRI ("%ecx", 2, SI); DRI ("%cx", 2, HI);
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+ DRI ("%cl", 2, QI); DRI ("%ch", 2, QIh);
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+ DRI ("%rbx", 3, DI); DRI ("%ebx", 3, SI); DRI ("%bx", 3, HI);
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+ DRI ("%bl", 3, QI); DRI ("%bh", 3, QIh);
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+ DRI ("%rsi", 4, DI); DRI ("%esi", 4, SI); DRI ("%si", 4, HI);
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+ DRI ("%sil", 4, QI);
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+ DRI ("%rdi", 5, DI); DRI ("%edi", 5, SI); DRI ("%di", 5, HI);
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+ DRI ("%dil", 5, QI);
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+ DRI ("%rbp", 6, DI); DRI ("%ebp", 6, SI); DRI ("%bp", 6, HI);
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+ DRI ("%rsp", 7, DI); DRI ("%esp", 7, SI); DRI ("%sp", 7, HI);
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+ DRI ("%r8", 8, DI); DRI ("%r8d", 8, SI); DRI ("%r8w", 8, HI);
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+ DRI ("%r8b", 8, QI);
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+ DRI ("%r9", 9, DI); DRI ("%r9d", 9, SI); DRI ("%r9w", 9, HI);
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+ DRI ("%r9b", 9, QI);
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+ DRI ("%r10", 10, DI); DRI ("%r10d", 10, SI); DRI ("%r10w", 10, HI);
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+ DRI ("%r10b", 10, QI);
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+ DRI ("%r11", 11, DI); DRI ("%r11d", 11, SI); DRI ("%r11w", 11, HI);
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+ DRI ("%r11b", 11, QI);
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+ DRI ("%r12", 12, DI); DRI ("%r12d", 12, SI); DRI ("%r12w", 12, HI);
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+ DRI ("%r12b", 12, QI);
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+ DRI ("%r13", 13, DI); DRI ("%r13d", 13, SI); DRI ("%r13w", 13, HI);
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+ DRI ("%r13b", 13, QI);
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+ DRI ("%r14", 14, DI); DRI ("%r14d", 14, SI); DRI ("%r14w", 14, HI);
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+ DRI ("%r14b", 14, QI);
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+ DRI ("%r15", 15, DI); DRI ("%r15d", 15, SI); DRI ("%r15w", 15, HI);
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+ DRI ("%r15b", 15, QI);
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} else if (elf_machine == EM_386) {
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- dwarf_regs["%eax"] = dwarf_regs["%ax"] = dwarf_regs["%al"] = dwarf_regs["%ah"] = 0;
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- dwarf_regs["%ecx"] = dwarf_regs["%cx"] = dwarf_regs["%cl"] = dwarf_regs["%ch"] = 1;
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- dwarf_regs["%edx"] = dwarf_regs["%dx"] = dwarf_regs["%dl"] = dwarf_regs["%dh"] = 2;
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- dwarf_regs["%ebx"] = dwarf_regs["%bx"] = dwarf_regs["%bl"] = dwarf_regs["%bh"] = 3;
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- dwarf_regs["%esp"] = dwarf_regs["%sp"] = 4;
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- dwarf_regs["%ebp"] = dwarf_regs["%bp"] = 5;
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- dwarf_regs["%esi"] = dwarf_regs["%si"] = dwarf_regs["%sil"] = 6;
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- dwarf_regs["%edi"] = dwarf_regs["%di"] = dwarf_regs["%dil"] = 7;
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+ DRI ("%eax", 0, SI); DRI ("%ax", 0, HI); DRI ("%al", 0, QI);
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+ DRI ("%ah", 0, QIh);
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+ DRI ("%ecx", 1, SI); DRI ("%cx", 1, HI); DRI ("%cl", 1, QI);
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+ DRI ("%ch", 1, QIh);
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+ DRI ("%edx", 2, SI); DRI ("%dx", 2, HI); DRI ("%dl", 2, QI);
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+ DRI ("%dh", 2, QIh);
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+ DRI ("%ebx", 3, SI); DRI ("%bx", 3, HI); DRI ("%bl", 3, QI);
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+ DRI ("%bh", 3, QIh);
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+ DRI ("%esp", 4, SI); DRI ("%sp", 4, HI);
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+ DRI ("%ebp", 5, SI); DRI ("%bp", 5, HI);
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+ DRI ("%esi", 6, SI); DRI ("%si", 6, HI); DRI ("%sil", 6, QI);
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+ DRI ("%edi", 7, SI); DRI ("%di", 7, HI); DRI ("%dil", 7, QI);
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} else if (elf_machine == EM_PPC || elf_machine == EM_PPC64) {
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- dwarf_regs["%r0"] = 0; dwarf_regs["%r1"] = 1; dwarf_regs["%r2"] = 2;
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- dwarf_regs["%r3"] = 3; dwarf_regs["%r4"] = 4; dwarf_regs["%r5"] = 5;
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- dwarf_regs["%r6"] = 6; dwarf_regs["%r7"] = 7; dwarf_regs["%r8"] = 8;
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- dwarf_regs["%r9"] = 9; dwarf_regs["%r10"] = 10; dwarf_regs["%r11"] = 11;
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- dwarf_regs["%r12"] = 12; dwarf_regs["%r13"] = 13; dwarf_regs["%r14"] = 14;
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- dwarf_regs["%r15"] = 15; dwarf_regs["%r16"] = 16; dwarf_regs["%r17"] = 17;
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- dwarf_regs["%r18"] = 18; dwarf_regs["%r19"] = 19; dwarf_regs["%r20"] = 20;
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- dwarf_regs["%r21"] = 21; dwarf_regs["%r22"] = 22; dwarf_regs["%r23"] = 23;
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- dwarf_regs["%r24"] = 24; dwarf_regs["%r25"] = 25; dwarf_regs["%r26"] = 26;
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- dwarf_regs["%r27"] = 27; dwarf_regs["%r28"] = 28; dwarf_regs["%r29"] = 29;
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- dwarf_regs["%r30"] = 30; dwarf_regs["%r31"] = 31;
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+ DRI ("%r0", 0, DI);
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+ DRI ("%r1", 1, DI);
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+ DRI ("%r2", 2, DI);
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+ DRI ("%r3", 3, DI);
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+ DRI ("%r4", 4, DI);
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+ DRI ("%r5", 5, DI);
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+ DRI ("%r6", 6, DI);
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+ DRI ("%r7", 7, DI);
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+ DRI ("%r8", 8, DI);
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+ DRI ("%r9", 9, DI);
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+ DRI ("%r10", 10, DI);
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+ DRI ("%r11", 11, DI);
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+ DRI ("%r12", 12, DI);
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+ DRI ("%r13", 13, DI);
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+ DRI ("%r14", 14, DI);
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+ DRI ("%r15", 15, DI);
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+ DRI ("%r16", 16, DI);
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+ DRI ("%r17", 17, DI);
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+ DRI ("%r18", 18, DI);
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+ DRI ("%r19", 19, DI);
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+ DRI ("%r20", 20, DI);
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+ DRI ("%r21", 21, DI);
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+ DRI ("%r22", 22, DI);
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+ DRI ("%r23", 23, DI);
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+ DRI ("%r24", 24, DI);
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+ DRI ("%r25", 25, DI);
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+ DRI ("%r26", 26, DI);
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+ DRI ("%r27", 27, DI);
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+ DRI ("%r28", 28, DI);
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+ DRI ("%r29", 29, DI);
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+ DRI ("%r30", 30, DI);
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+ DRI ("%r31", 31, DI);
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// PR11821: unadorned register "names" without -mregnames
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- dwarf_regs["0"] = 0; dwarf_regs["1"] = 1; dwarf_regs["2"] = 2;
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- dwarf_regs["3"] = 3; dwarf_regs["4"] = 4; dwarf_regs["5"] = 5;
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- dwarf_regs["6"] = 6; dwarf_regs["7"] = 7; dwarf_regs["8"] = 8;
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- dwarf_regs["9"] = 9; dwarf_regs["10"] = 10; dwarf_regs["11"] = 11;
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- dwarf_regs["12"] = 12; dwarf_regs["13"] = 13; dwarf_regs["14"] = 14;
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- dwarf_regs["15"] = 15; dwarf_regs["16"] = 16; dwarf_regs["17"] = 17;
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- dwarf_regs["18"] = 18; dwarf_regs["19"] = 19; dwarf_regs["20"] = 20;
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- dwarf_regs["21"] = 21; dwarf_regs["22"] = 22; dwarf_regs["23"] = 23;
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- dwarf_regs["24"] = 24; dwarf_regs["25"] = 25; dwarf_regs["26"] = 26;
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- dwarf_regs["27"] = 27; dwarf_regs["28"] = 28; dwarf_regs["29"] = 29;
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- dwarf_regs["30"] = 30; dwarf_regs["31"] = 31;
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+ DRI ("0", 0, DI);
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+ DRI ("1", 1, DI);
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+ DRI ("2", 2, DI);
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+ DRI ("3", 3, DI);
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+ DRI ("4", 4, DI);
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+ DRI ("5", 5, DI);
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+ DRI ("6", 6, DI);
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+ DRI ("7", 7, DI);
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+ DRI ("8", 8, DI);
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+ DRI ("9", 9, DI);
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+ DRI ("10", 10, DI);
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+ DRI ("11", 11, DI);
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+ DRI ("12", 12, DI);
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+ DRI ("13", 13, DI);
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+ DRI ("14", 14, DI);
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+ DRI ("15", 15, DI);
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+ DRI ("16", 16, DI);
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+ DRI ("17", 17, DI);
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+ DRI ("18", 18, DI);
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+ DRI ("19", 19, DI);
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+ DRI ("20", 20, DI);
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+ DRI ("21", 21, DI);
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+ DRI ("22", 22, DI);
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+ DRI ("23", 23, DI);
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+ DRI ("24", 24, DI);
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+ DRI ("25", 25, DI);
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+ DRI ("26", 26, DI);
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+ DRI ("27", 27, DI);
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+ DRI ("28", 28, DI);
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+ DRI ("29", 29, DI);
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+ DRI ("30", 30, DI);
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+ DRI ("31", 31, DI);
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} else if (elf_machine == EM_S390) {
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- dwarf_regs["%r0"] = 0; dwarf_regs["%r1"] = 1; dwarf_regs["%r2"] = 2;
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- dwarf_regs["%r3"] = 3; dwarf_regs["%r4"] = 4; dwarf_regs["%r5"] = 5;
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- dwarf_regs["%r6"] = 6; dwarf_regs["%r7"] = 7; dwarf_regs["%r8"] = 8;
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- dwarf_regs["%r9"] = 9; dwarf_regs["%r10"] = 10; dwarf_regs["%r11"] = 11;
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- dwarf_regs["%r12"] = 12; dwarf_regs["%r13"] = 13; dwarf_regs["%r14"] = 14;
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- dwarf_regs["%r15"] = 15;
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+ DRI ("%r0", 0, DI);
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+ DRI ("%r1", 1, DI);
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+ DRI ("%r2", 2, DI);
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+ DRI ("%r3", 3, DI);
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+ DRI ("%r4", 4, DI);
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+ DRI ("%r5", 5, DI);
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+ DRI ("%r6", 6, DI);
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+ DRI ("%r7", 7, DI);
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+ DRI ("%r8", 8, DI);
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+ DRI ("%r9", 9, DI);
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+ DRI ("%r10", 10, DI);
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+ DRI ("%r11", 11, DI);
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+ DRI ("%r12", 12, DI);
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+ DRI ("%r13", 13, DI);
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+ DRI ("%r14", 14, DI);
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+ DRI ("%r15", 15, DI);
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} else if (arg_count) {
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/* permit this case; just fall back to dwarf */
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}
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+#undef DRI
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need_debug_info = false;
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tokenize(arg_string, arg_tokens, " ");
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@@ -4739,11 +4813,10 @@ struct sdt_uprobe_var_expanding_visitor: public var_expanding_visitor
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stap_sdt_probe_type probe_type;
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unsigned arg_count;
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vector<string> arg_tokens;
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- map<string,int> dwarf_regs;
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+ map<string, pair<unsigned,int> > dwarf_regs;
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bool need_debug_info;
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void visit_target_symbol (target_symbol* e);
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- __uint64_t get_register_width (string);
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};
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@@ -4884,7 +4957,7 @@ sdt_uprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
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// Build regex pieces out of the known dwarf_regs. We keep two separate
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// lists: ones with the % prefix (and thus unambigiuous even despite PR11821),
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// and ones with no prefix (and thus only usable in unambiguous contexts).
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- for (map<string,int>::iterator ri = dwarf_regs.begin(); ri != dwarf_regs.end(); ri++)
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+ for (map<string,pair<unsigned,int> >::iterator ri = dwarf_regs.begin(); ri != dwarf_regs.end(); ri++)
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{
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string regname = ri->first;
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assert (regname != "");
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@@ -4905,15 +4978,16 @@ sdt_uprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
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if (! rc)
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{
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string regname = matches[1];
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- if (dwarf_regs.find (regname) != dwarf_regs.end()) // known register
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+ map<string,pair<unsigned,int> >::iterator ri = dwarf_regs.find (regname);
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+ if (ri != dwarf_regs.end()) // known register
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{
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embedded_expr *get_arg1 = new embedded_expr;
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string width_adjust;
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- switch (get_register_width (regname))
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+ switch (ri->second.second)
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{
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- case 0xff: width_adjust = ") & 0xff"; break;
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- case 0xff00: width_adjust = ">>8) & 0xff"; break;
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- case 0xffff:
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+ case QI: width_adjust = ") & 0xff"; break;
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+ case QIh: width_adjust = ">>8) & 0xff"; break;
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+ case HI:
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// preserve 16 bit register signness
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width_adjust = (precision > 0) ? ") & 0xffff" : ")";
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break;
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@@ -4927,7 +5001,7 @@ sdt_uprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
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+ (is_user_module (process_name)
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? string("u_fetch_register(")
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: string("k_fetch_register("))
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- + lex_cast(dwarf_regs[regname]) + string("))")
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+ + lex_cast(dwarf_regs[regname].first) + string("))")
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+ width_adjust;
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argexpr = get_arg1;
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goto matched;
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@@ -4968,7 +5042,7 @@ sdt_uprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
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+ (is_user_module (process_name)
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? string("u_fetch_register(")
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: string("k_fetch_register("))
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- + lex_cast(dwarf_regs[regname]) + string(")");
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+ + lex_cast(dwarf_regs[regname].first) + string(")");
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// XXX: may we ever need to cast that to a narrower type?
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literal_number* inc = new literal_number(disp);
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@@ -5051,31 +5125,6 @@ sdt_uprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
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}
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-__uint64_t
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-sdt_uprobe_var_expanding_visitor::get_register_width (string regname)
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-{
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- if (elf_machine == EM_X86_64 || elf_machine == EM_386) {
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||||
- int regno = dwarf_regs.find (regname)->second;
|
||||
- // al,bl,cl,dl
|
||||
- if (regno < 4 && regname[2] == 'l') return 0xff;
|
||||
- // ah,bh,ch,dh
|
||||
- else if (regno < 4 && regname[2] == 'h') return 0xff00;
|
||||
- // ax,bx,cx,dx
|
||||
- else if (regno < 4 && regname[2] == 'x') return 0xffff;
|
||||
- // sil,dil,bpl,spl
|
||||
- else if (regno < 8 && regname.rfind('l') != regname.npos) return 0xff; // sil
|
||||
- // si,di,bp,sp
|
||||
- else if (regno < 8 && regname.length() == 3) return 0xffff; // si
|
||||
- // r8b-r15b
|
||||
- else if (regno < 16 && regname.rfind('b') != regname.npos) return 0xff; // r8b
|
||||
- // r8w-r15w
|
||||
- else if (regno < 16 && regname.rfind('w') != regname.npos) return 0xffff; // r8w
|
||||
- else return 0xffffffff;
|
||||
- }
|
||||
- else return 0xffffffff;
|
||||
-}
|
||||
-
|
||||
-
|
||||
void
|
||||
sdt_kprobe_var_expanding_visitor::visit_target_symbol (target_symbol *e)
|
||||
{
|
||||
diff --git a/includes/sys/sdt.h b/includes/sys/sdt.h
|
||||
index e878e17..d6eff49 100644
|
||||
--- a/includes/sys/sdt.h
|
||||
+++ b/includes/sys/sdt.h
|
||||
@@ -1,5 +1,5 @@
|
||||
/* <sys/sdt.h> - Systemtap static probe definition macros.
|
||||
- Copyright (C) 2010 Red Hat Inc.
|
||||
+ Copyright (C) 2010-2011 Red Hat Inc.
|
||||
|
||||
This file is part of systemtap, and is free software in the public domain.
|
||||
*/
|
||||
@@ -61,9 +61,24 @@
|
||||
? sizeof (void *) : sizeof (x))
|
||||
# define _SDT_ARGVAL(x) (x)
|
||||
|
||||
+/* The C++ <limits> header uses the names 'min' and 'max' and conflicts
|
||||
+ with any application-defined macros by these names. In GCC 4.3 and
|
||||
+ later, we can hack around this problem with new #pragma magic. */
|
||||
+# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
|
||||
+ #pragma push_macro("min")
|
||||
+ #pragma push_macro("max")
|
||||
+# undef min
|
||||
+# undef max
|
||||
+# endif
|
||||
+
|
||||
# include <cstddef>
|
||||
# include <limits>
|
||||
|
||||
+# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
|
||||
+ #pragma pop_macro("min")
|
||||
+ #pragma pop_macro("max")
|
||||
+# endif
|
||||
+
|
||||
template<typename __sdt_T>
|
||||
struct __sdt_type
|
||||
{
|
||||
@ -16,7 +16,7 @@
|
||||
|
||||
Name: systemtap
|
||||
Version: 1.4
|
||||
Release: 1%{?dist}
|
||||
Release: 2%{?dist}
|
||||
# for version, see also configure.ac
|
||||
Summary: Instrumentation System
|
||||
Group: Development/System
|
||||
@ -56,6 +56,7 @@ BuildRequires: m4
|
||||
%else
|
||||
BuildRequires: elfutils-devel >= %{elfutils_version}
|
||||
%endif
|
||||
Patch2: sdt-regtable.patch
|
||||
|
||||
%if %{with_docs}
|
||||
BuildRequires: /usr/bin/latex /usr/bin/dvips /usr/bin/ps2pdf latex2html
|
||||
@ -180,6 +181,8 @@ data from SystemTap instrumentation scripts.
|
||||
%prep
|
||||
%setup -q %{?setup_elfutils}
|
||||
|
||||
%patch2 -p1
|
||||
|
||||
%if %{with_bundled_elfutils}
|
||||
cd elfutils-%{elfutils_version}
|
||||
%patch1 -p1
|
||||
@ -514,6 +517,9 @@ exit 0
|
||||
|
||||
|
||||
%changelog
|
||||
* Mon Jan 19 2011 Stan Cox <scox@redhat.com> - 1.4-2
|
||||
- sdt fixes
|
||||
|
||||
* Mon Jan 17 2011 Frank Ch. Eigler <fche@redhat.com> - 1.4-1
|
||||
- Upstream release.
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user