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[MONO] Add JIT_CODE_DEBUG_INFO record functionality for Jitdump #85107

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Merged
merged 8 commits into from
May 17, 2023
Merged

[MONO] Add JIT_CODE_DEBUG_INFO record functionality for Jitdump #85107

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f015afa
added support for JITDEBUG_INFO
saitama951 Apr 20, 2023
9c1fdd7
added comments
saitama951 Apr 20, 2023
bf53413
Update mini-runtime.c
saitama951 Apr 20, 2023
b8c7554
made changes to coding conventions
saitama951 Apr 21, 2023
2abb0f4
Update mini-runtime.c
saitama951 Apr 24, 2023
c68edd6
Update mini-runtime.c
saitama951 Apr 24, 2023
202c5de
Update mini-runtime.c
saitama951 Apr 24, 2023
4b359cf
Update mini-runtime.c
saitama951 Apr 24, 2023
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97 changes: 94 additions & 3 deletions src/mono/mono/mini/mini-runtime.c
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@
#include <mono/metadata/threads.h>
#include <mono/metadata/appdomain.h>
#include <mono/metadata/debug-helpers.h>
#include <mono/metadata/debug-internals.h>
#include <mono/metadata/domain-internals.h>
#include <mono/metadata/profiler-private.h>
#include <mono/metadata/mono-config.h>
Expand Down Expand Up @@ -2015,7 +2016,7 @@ static clockid_t clock_id = CLOCK_MONOTONIC;

enum {
JIT_DUMP_MAGIC = 0x4A695444,
JIT_DUMP_VERSION = 2,
JIT_DUMP_VERSION = 1,
#if HOST_X86
ELF_MACHINE = EM_386,
#elif HOST_AMD64
Expand All @@ -2031,7 +2032,8 @@ enum {
#elif HOST_RISCV
ELF_MACHINE = EM_RISCV,
#endif
JIT_CODE_LOAD = 0
JIT_CODE_LOAD = 0,
JIT_DEBUG_INFO = 2
};
typedef struct
{
Expand Down Expand Up @@ -2062,7 +2064,22 @@ typedef struct
// Null terminated function name
// Native code
} JitCodeLoadRecord;
typedef struct
{
guint64 code_addr;
guint32 line;
guint32 discrim;
char name[];
}DebugEntry;
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Suggested change
}DebugEntry;
} DebugEntry;

typedef struct
{
RecordHeader header;
guint64 code_addr;
guint64 nr_entry;
DebugEntry debug_entry[];
}JitCodeDebug;
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Suggested change
}JitCodeDebug;
} JitCodeDebug;


static void add_basic_JitCodeDebug_info(JitCodeDebug *record);
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Suggested change
static void add_basic_JitCodeDebug_info(JitCodeDebug *record);
static void add_basic_JitCodeDebug_info (JitCodeDebug *record);

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In mono code base, we add a space between the function name and the "(". Please follow this function call style for all the code change in this PR.

static void add_file_header_info (FileHeader *header);
static void add_basic_JitCodeLoadRecord_info (JitCodeLoadRecord *record);

Expand Down Expand Up @@ -2128,7 +2145,75 @@ mono_emit_jit_dump (MonoJitInfo *jinfo, gpointer code)

record.code_index = ++code_index;

// TODO: write debugInfo and unwindInfo immediately before the JitCodeLoadRecord (while lock is held).
DebugEntry ent;
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This should follow the mono coding conventions, see the rest of the file for examples.

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done. let me know if there is anything else

JitCodeDebug rec;
MonoDebugMethodInfo *minfo;
MonoDebugMethodJitInfo *dmji;
MonoDebugSourceLocation *loc;
int i;

memset(&rec, 0, sizeof(rec));

//populating info relating debug methods
minfo = mono_debug_lookup_method(jinfo->d.method);
dmji = mono_debug_find_method( jinfo->d.method, NULL);

add_basic_JitCodeDebug_info(&rec);
rec.code_addr = (guint64)dmji->code_start;
rec.header.total_size = sizeof(rec) + sizeof(ent) + 1;
rec.nr_entry=1;
for(i=0;i < dmji->num_line_numbers;++i)
{
loc = mono_debug_lookup_source_location_by_il(jinfo->d.method,dmji->line_numbers[i].il_offset,NULL);

if(!(loc))
{
continue;
}
if(!(loc->source_file))
{
mono_debug_free_source_location(loc);
continue;
}

rec.header.total_size += sizeof(ent) + strlen(loc->source_file) + 1;
rec.nr_entry++;
}

fwrite(&rec,sizeof(rec), 1 ,perf_dump_file);


for( i = 0; i < dmji->num_line_numbers;++i)
{
//get the line number using il offset
loc = mono_debug_lookup_source_location_by_il(jinfo->d.method,dmji->line_numbers[i].il_offset,NULL);

if(!loc)
continue;
if(!(loc->source_file))
{
mono_debug_free_source_location(loc);
continue;
}

ent.code_addr = (guint64)dmji->code_start + dmji->line_numbers[i].native_offset;
ent.discrim = 0;
ent.line = (guint32)loc->row;



fwrite(&ent, sizeof(ent),1,perf_dump_file);
fwrite(loc->source_file,strlen(loc->source_file)+1,1,perf_dump_file);
}


ent.code_addr = (guint64)jinfo->code_start + jinfo->code_size;
ent.discrim = 0;
ent.line = 0;
fwrite(&ent,sizeof(ent),1,perf_dump_file);
fwrite("",1,1,perf_dump_file);

// TODO: write unwindInfo immediately before the JitCodeLoadRecord (while lock is held).

record.header.timestamp = mono_clock_get_time_ns (clock_id);

Expand All @@ -2139,7 +2224,13 @@ mono_emit_jit_dump (MonoJitInfo *jinfo, gpointer code)
mono_os_mutex_unlock (&perf_dump_mutex);
}
}
static void
add_basic_JitCodeDebug_info(JitCodeDebug *record)
{
record->header.id = JIT_DEBUG_INFO;
record->header.timestamp = mono_clock_get_time_ns (clock_id);

}
static void
add_basic_JitCodeLoadRecord_info (JitCodeLoadRecord *record)
{
Expand Down