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> compile NEMU

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ysyx_22040000 李心杨
Linux calcite 6.6.19 #1-NixOS SMP PREEMPT_DYNAMIC Fri Mar  1 12:35:11 UTC 2024 x86_64 GNU/Linux
 19:29:51  up   6:35,  2 users,  load average: 0.51, 0.55, 0.46
This commit is contained in:
tracer-ysyx 2024-03-20 19:29:51 +08:00 committed by xinyangli
parent 173d04977c
commit 728fa8052d
1 changed files with 8 additions and 6 deletions
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14
nemu/src/utils/ftrace.c
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@ -17,15 +17,14 @@ static int cmp_func_t(const void *a, const void *b) {
return ((func_t *)a)->start > ((func_t *)b)->start; return ((func_t *)a)->start > ((func_t *)b)->start;
} }
static const char *get_func_name(vaddr_t addr) { static func_t *get_func(vaddr_t addr) {
int l = 0, r = func_table_len - 1; int l = 0, r = func_table_len - 1;
while(l <= r) { while(l <= r) {
int mid = (l + r) / 2; int mid = (l + r) / 2;
if(func_table[mid].start <= addr) l = mid + 1; if(func_table[mid].start <= addr) l = mid + 1;
else r = mid - 1; else r = mid - 1;
} }
// if(func_table[l].start + func_table[l].len < addr) return "???"; return l == 0 ? NULL : &func_table[l - 1];
return l == 0 ? "???" : func_table[l - 1].name;
} }
void init_elf(const char *path) { void init_elf(const char *path) {
@ -101,11 +100,12 @@ failed_nosym:
} }
void ftrace_call(vaddr_t pc, vaddr_t addr) { void ftrace_call(vaddr_t pc, vaddr_t addr) {
func_t *f = get_func(addr);
Assert(ftrace_stack_len < CONFIG_FTRACE_STACK_SIZE, Assert(ftrace_stack_len < CONFIG_FTRACE_STACK_SIZE,
"Ftrace stack exceed size limit, consider turn off ftrace or increase " "Ftrace stack exceed size limit, consider turn off ftrace or increase "
"FTRACE_STACK_SIZE."); "FTRACE_STACK_SIZE.");
ftrace_stack[ftrace_stack_len] = pc + 4; ftrace_stack[ftrace_stack_len] = pc + 4;
Trace("%*s0x%x call [%s@0x%x]", ftrace_stack_len, "", pc, get_func_name(addr), Trace("%*s0x%x call <%s@0x%x>", ftrace_stack_len, "", pc, f == NULL ? "???" : f->name,
addr); addr);
ftrace_stack_len++; ftrace_stack_len++;
} }
@ -115,7 +115,9 @@ void ftrace_return(vaddr_t pc, vaddr_t addr) {
for (; addr != ftrace_stack[ftrace_stack_len] && ftrace_stack_len >= 0; for (; addr != ftrace_stack[ftrace_stack_len] && ftrace_stack_len >= 0;
ftrace_stack_len--) { ftrace_stack_len--) {
vaddr_t tco_addr = ftrace_stack[ftrace_stack_len]; vaddr_t tco_addr = ftrace_stack[ftrace_stack_len];
Trace("%*s0x%x <TCO> [%s@0x%x] ", ftrace_stack_len, "", pc, get_func_name(tco_addr), tco_addr); func_t *f = get_func(tco_addr);
Trace("%*s0x%x <TCO> [%s@0x%x] ", ftrace_stack_len, "", pc, f == NULL ? "???" : f->name, tco_addr - f->start);
} }
Trace("%*s0x%x ret [%s@0x%x]", ftrace_stack_len, "", pc, get_func_name(addr), addr); func_t *f = get_func(addr);
Trace("%*s0x%x ret <%s+0x%x>", ftrace_stack_len, "", pc, f == NULL ? "???" : f->name, addr - f->start);
} }