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gdb: Visualize register positions on the left

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This commit is contained in:
Takashi Kokubun 2023-03-31 09:13:33 -07:00
parent 9e678cdbd0
commit a9b6b25de5
1 changed files with 14 additions and 1 deletions
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15
misc/gdb.py
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@ -1,3 +1,5 @@
import textwrap
# Usage: # Usage:
# cfp: Dump the current cfp # cfp: Dump the current cfp
# cfp + 1: Dump the caller cfp # cfp + 1: Dump the caller cfp
@ -66,13 +68,24 @@ class CFP(gdb.Command):
print(f'Stack (size={stack_size}):') print(f'Stack (size={stack_size}):')
for i in range(0, stack_size): for i in range(0, stack_size):
self.print_stack(cfp, i, self.rp(cfp, i)) self.print_stack(cfp, i, self.rp(cfp, i))
print(self.regs(cfp, stack_size))
def print_stack(self, cfp, bp_index, content): def print_stack(self, cfp, bp_index, content):
address = self.get_int(f'{cfp}->__bp__ + {bp_index}') address = self.get_int(f'{cfp}->__bp__ + {bp_index}')
value = self.get_value(cfp, bp_index) value = self.get_value(cfp, bp_index)
regs = self.regs(cfp, bp_index)
if content: if content:
content = textwrap.indent(content, ' ' * 3).lstrip() # Leave the regs column empty
content = f'{content} ' content = f'{content} '
print('0x{:x} [{}] {}(0x{:x})'.format(address, bp_index, content, value)) print('{:2} 0x{:x} [{}] {}(0x{:x})'.format(regs, address, bp_index, content, value))
def regs(self, cfp, bp_index):
address = self.get_int(f'{cfp}->__bp__ + {bp_index}')
regs = []
for reg, field in { 'EP': 'ep', 'BP': '__bp__', 'SP': 'sp' }.items():
if address == self.get_int(f'{cfp}->{field}'):
regs.append(reg)
return ' '.join(regs)
def rp(self, cfp, bp_index): def rp(self, cfp, bp_index):
value = self.get_value(cfp, bp_index) value = self.get_value(cfp, bp_index)