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author | Stan Cox <scox@redhat.com> | 2009-04-01 15:48:24 -0400 |
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committer | Stan Cox <scox@redhat.com> | 2009-04-01 15:48:24 -0400 |
commit | 952ce18c9672046c052fc77d5da8f98e8ae75735 (patch) | |
tree | 2b817cebd7db30900b90251acab8ad5cd3979c73 | |
parent | f34b7eea333adc0bc9dc8e51445c2bbc39e9bc82 (diff) | |
download | systemtap-steved-952ce18c9672046c052fc77d5da8f98e8ae75735.tar.gz systemtap-steved-952ce18c9672046c052fc77d5da8f98e8ae75735.tar.xz systemtap-steved-952ce18c9672046c052fc77d5da8f98e8ae75735.zip |
Use alloca trick to keep argN active on GCC 4.1.
* includes/sys/sdt.h (STAP_UNINLINE): New.
(STAP_UNINLINE_LABEL): New.
static_uprobes.exp: Match using charset instead of .*
-rw-r--r-- | includes/sys/sdt.h | 48 | ||||
-rw-r--r-- | tapsets.cxx | 5 | ||||
-rw-r--r-- | testsuite/systemtap.base/static_uprobes.exp | 2 |
3 files changed, 38 insertions, 17 deletions
diff --git a/includes/sys/sdt.h b/includes/sys/sdt.h index ba75076b..c3fa16d9 100644 --- a/includes/sys/sdt.h +++ b/includes/sys/sdt.h @@ -39,6 +39,19 @@ #endif #define STAP_LABEL(a,b) STAP_CONCAT(a,b) +/* Taking the address of a local label and/or referencing alloca prevents the + containing function from being inlined, which keeps the parameters visible. */ + +#if __GNUC__ == 4 && __GNUC_MINOR__ <= 1 +#include <alloca.h> +#define STAP_UNINLINE alloca((size_t)0) +#else +#define STAP_UNINLINE +#endif + +#define STAP_UNINLINE_LABEL(label) \ + __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label + #define STAP_PROBE_(probe) \ do { \ STAP_PROBE_DATA(probe); \ @@ -46,13 +59,11 @@ do { \ "\tnop"); \ } while (0) -/* Taking the address of a local label prevents the containing function - from being inlined, which keeps the parameters visible. */ - #define STAP_PROBE1_(probe,label,parm1) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -61,9 +72,10 @@ do { \ #define STAP_PROBE2_(probe,label,parm1,parm2) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -72,10 +84,11 @@ do { \ #define STAP_PROBE3_(probe,label,parm1,parm2,parm3) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ - volatile __typeof__((parm1)) arg1 = parm1; \ + STAP_UNINLINE_LABEL(label); \ + volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -84,11 +97,12 @@ do { \ #define STAP_PROBE4_(probe,label,parm1,parm2,parm3,parm4) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ volatile __typeof__((parm4)) arg4 = parm4; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -97,12 +111,13 @@ do { \ #define STAP_PROBE5_(probe,label,parm1,parm2,parm3,parm4,parm5) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ volatile __typeof__((parm4)) arg4 = parm4; \ volatile __typeof__((parm5)) arg5 = parm5; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -111,13 +126,14 @@ do { \ #define STAP_PROBE6_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ volatile __typeof__((parm4)) arg4 = parm4; \ volatile __typeof__((parm5)) arg5 = parm5; \ volatile __typeof__((parm6)) arg6 = parm6; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -126,7 +142,7 @@ do { \ #define STAP_PROBE7_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ @@ -134,6 +150,7 @@ do { \ volatile __typeof__((parm5)) arg5 = parm5; \ volatile __typeof__((parm6)) arg6 = parm6; \ volatile __typeof__((parm7)) arg7 = parm7; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -142,7 +159,7 @@ do { \ #define STAP_PROBE8_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ @@ -151,6 +168,7 @@ do { \ volatile __typeof__((parm6)) arg6 = parm6; \ volatile __typeof__((parm7)) arg7 = parm7; \ volatile __typeof__((parm8)) arg8 = parm8; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -159,7 +177,7 @@ do { \ #define STAP_PROBE9_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ @@ -169,6 +187,7 @@ do { \ volatile __typeof__((parm7)) arg7 = parm7; \ volatile __typeof__((parm8)) arg8 = parm8; \ volatile __typeof__((parm9)) arg9 = parm9; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ @@ -177,7 +196,7 @@ do { \ #define STAP_PROBE10_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10) \ do { \ - __extension__ static volatile long labelval __attribute__ ((unused)) = (long) &&label; \ + STAP_UNINLINE_LABEL(label); \ volatile __typeof__((parm1)) arg1 = parm1; \ volatile __typeof__((parm2)) arg2 = parm2; \ volatile __typeof__((parm3)) arg3 = parm3; \ @@ -188,6 +207,7 @@ do { \ volatile __typeof__((parm8)) arg8 = parm8; \ volatile __typeof__((parm9)) arg9 = parm9; \ volatile __typeof__((parm10)) arg10 = parm10; \ + STAP_UNINLINE; \ STAP_PROBE_DATA(probe); \ label: \ __asm__ volatile ("2:\n" \ diff --git a/tapsets.cxx b/tapsets.cxx index 50ee563a..449d7cc0 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -5812,7 +5812,8 @@ dwarf_builder::build(systemtap_session & sess, && dw->function_name_matches_pattern (probe_name.c_str(), location->components[1]->arg->tok->content.c_str()))) - ; + { + } else continue; const token* sv_tok = location->components[1]->arg->tok; @@ -5833,7 +5834,7 @@ dwarf_builder::build(systemtap_session & sess, return; } - if (probe_type == dwarf_no_probes) + else if (probe_type == dwarf_no_probes) { location->components[1]->functor = TOK_FUNCTION; location->components[1]->arg = new literal_string("*"); diff --git a/testsuite/systemtap.base/static_uprobes.exp b/testsuite/systemtap.base/static_uprobes.exp index 820626b8..d6b6e1e3 100644 --- a/testsuite/systemtap.base/static_uprobes.exp +++ b/testsuite/systemtap.base/static_uprobes.exp @@ -196,7 +196,7 @@ set ok 0 spawn stap -l "process(\"./sdt_types.x\").mark(\"*\")" expect { -timeout 180 - -re {mark\(\".*\"\)} { incr ok; exp_continue } + -re {mark\(\"[a-z_]+\"\)} { incr ok; exp_continue } timeout { fail "$test C (timeout)" } eof { } } |