hanzoai/node-dtrace-provider
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Add Solaris 32 bit support.

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hacked in with ifdefs, needs factoring out into platform-specific
DTraceProbe classes.
This commit is contained in:
Chris Andrews
2011-01-28 22:11:09 +00:00
parent 1f1eadd063
commit 37e0fff5b0
2 changed files with 151 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
dtrace_provider.cc
+146 -13
View File
@@ -74,10 +74,21 @@ namespace node {
return Undefined();
}
#define FUNC_SIZE 32
static void *create_probe(int argc) {
uint8_t insns[FUNC_SIZE] = {
#ifdef __APPLE__
#define FUNC_SIZE 32
#define IS_ENABLED_FUNC_LEN 12
#else
#define FUNC_SIZE 96
#define IS_ENABLED_FUNC_LEN 32
#endif
#ifdef __APPLE__
void *p = (void *) valloc(FUNC_SIZE);
(void)mprotect((void *)p, FUNC_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC);
uint8_t tracepoints[FUNC_SIZE] = {
0x55, 0x48, 0x89, 0xe5,
0x48, 0x33, 0xc0, 0x90,
0x90, 0xc9, 0xc3, 0x00,
@@ -87,10 +98,122 @@ namespace node {
0x1f, 0x44, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
};
void *p = (void *) valloc(FUNC_SIZE);
memcpy(p, tracepoints, FUNC_SIZE);
#else // Solaris 32 bit
void *p = (void *) memalign(PAGESIZE, FUNC_SIZE);
(void)mprotect((void *)p, FUNC_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC);
memcpy(p, insns, FUNC_SIZE);
uint8_t is_enabled[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0x33, 0xc0,
0x90, 0x90, 0x90, 0x89,
0x45, 0xfc, 0x83, 0x7d,
0xfc, 0x00, 0x0f, 0x95,
0xc0, 0x0f, 0xb6, 0xc0,
0x89, 0x45, 0xfc, 0x8b,
0x45, 0xfc, 0xc9, 0xc3,
};
memcpy(p, is_enabled, FUNC_SIZE);
switch(argc) {
case 0:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0x90, 0x90,
0x90, 0x90, 0x90, 0x83,
0xc4, 0x00, 0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
break;
case 1:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x08, 0x90, 0x90, 0x90,
0x90, 0x90, 0x83, 0xc4,
0x00, 0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
break;
case 2:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x0c, 0xff, 0x75, 0x08,
0x90, 0x90, 0x90, 0x90,
0x90, 0x83, 0xc4, 0x00,
0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
break;
case 3:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x10, 0xff, 0x75, 0x0c,
0xff, 0x75, 0x08, 0x90,
0x90, 0x90, 0x90, 0x90,
0x83, 0xc4, 0x00, 0xc9,
0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
break;
case 4:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x14, 0xff, 0x75, 0x10,
0xff, 0x75, 0x0c, 0xff,
0x75, 0x08, 0x90, 0x90,
0x90, 0x90, 0x90, 0x83,
0xc4, 0x00, 0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
case 5:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x18, 0xff, 0x75, 0x14,
0xff, 0x75, 0x10, 0xff,
0x75, 0x0c, 0xff, 0x75,
0x08, 0x90, 0x90, 0x90,
0x90, 0x90, 0x83, 0xc4,
0x00, 0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
case 6:
{
uint8_t probe[FUNC_SIZE] = {
0x55, 0x89, 0xe5, 0x83,
0xec, 0x08, 0xff, 0x75,
0x1c, 0xff, 0x75, 0x18,
0xff, 0x75, 0x14, 0xff,
0x75, 0x10, 0xff, 0x75,
0x0c, 0xff, 0x75, 0x08,
0x90, 0x90, 0x90, 0x90,
0x90, 0x83, 0xc4, 0x00,
0xc9, 0xc3
};
memcpy((uint8_t *)p + 32, probe, FUNC_SIZE - 32);
}
break;
}
#endif
return p;
}
@@ -276,31 +399,31 @@ namespace node {
switch (pd->Argc()) {
case 0:
func0 = (void (*)())((uint64_t)p->addr + 12);
func0 = (void (*)())((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func0)();
break;
case 1:
func1 = (void (*)(void *))((uint64_t)p->addr + 12);
func1 = (void (*)(void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func1)(argv[0]);
break;
case 2:
func2 = (void (*)(void *, void *))((uint64_t)p->addr + 12);
func2 = (void (*)(void *, void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func2)(argv[0], argv[1]);
break;
case 3:
func3 = (void (*)(void *, void *, void *))((uint64_t)p->addr + 12);
func3 = (void (*)(void *, void *, void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func3)(argv[0], argv[1], argv[2]);
break;
case 4:
func4 = (void (*)(void *, void *, void *, void *))((uint64_t)p->addr + 12);
func4 = (void (*)(void *, void *, void *, void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func4)(argv[0], argv[1], argv[2], argv[3]);
break;
case 5:
func5 = (void (*)(void *, void *, void *, void *, void *))((uint64_t)p->addr + 12);
func5 = (void (*)(void *, void *, void *, void *, void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func5)(argv[0], argv[1], argv[2], argv[3], argv[4]);
break;
case 6:
func6 = (void (*)(void *, void *, void *, void *, void *, void *))((uint64_t)p->addr + 12);
func6 = (void (*)(void *, void *, void *, void *, void *, void *))((uint64_t)p->addr + IS_ENABLED_FUNC_LEN);
(void)(*func6)(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]);
break;
}
@@ -596,6 +719,7 @@ namespace node {
return dof;
}
#ifdef __APPLE__
uint32_t DTraceProbe::ProbeOffset(char *dof, uint8_t argc) {
return (uint32_t) ((uint64_t) this->addr - (uint64_t) dof + 18);
}
@@ -603,6 +727,15 @@ namespace node {
uint32_t DTraceProbe::IsEnabledOffset(char *dof) {
return (uint32_t) ((uint64_t) this->addr - (uint64_t) dof + 6);
}
#else
uint32_t DTraceProbe::ProbeOffset(char *dof, uint8_t argc) {
return (32 + 6 + (argc * 3));
}
uint32_t DTraceProbe::IsEnabledOffset(char *dof) {
return (8);
}
#endif
extern "C" void
init(Handle<Object> target) {
dtrace_provider.h
+5
View File
@@ -11,6 +11,11 @@
#include <fcntl.h>
#include <unistd.h>
#ifndef __APPLE__
#include <stdlib.h>
#include <malloc.h>
#endif
namespace node {
using namespace v8;