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authoriximeow <me@iximeow.net>2024-06-18 13:59:33 -0700
committeriximeow <me@iximeow.net>2024-06-18 13:59:33 -0700
commit758ddc604b6300c48ae14dbdc8d48720124658f2 (patch)
tree935aa75f0455483974ca078a26c592bb18002981 /src/long_mode
parent49f54724a3b0b2497bd944f7638cb6e8ff1d18dc (diff)
move away from fmt for visit_i64 and displacements too
Diffstat (limited to 'src/long_mode')
-rw-r--r--src/long_mode/display.rs56
1 files changed, 54 insertions, 2 deletions
diff --git a/src/long_mode/display.rs b/src/long_mode/display.rs
index e3f5b0a..0e09173 100644
--- a/src/long_mode/display.rs
+++ b/src/long_mode/display.rs
@@ -1121,7 +1121,31 @@ impl <T: DisplaySink, Y: YaxColors> crate::long_mode::OperandVisitor for Coloriz
}
fn visit_i64(&mut self, imm: i64) -> Result<Self::Ok, Self::Error> {
self.f.span_enter(TokenType::Immediate);
- write!(self.f, "{}", signed_i64_hex(imm))?;
+ let mut v = imm as u64;
+ if imm < 0 {
+ self.f.write_char('-')?;
+ v = -imm as u64;
+ }
+ self.f.write_fixed_size("0x")?;
+ let mut buf = [core::mem::MaybeUninit::<u8>::uninit(); 64];
+ let mut curr = buf.len();
+ loop {
+ let digit = v % 16;
+ let c = c_to_hex(digit as u8);
+ curr -= 1;
+ buf[curr].write(c);
+ v = v / 16;
+ if v == 0 {
+ break;
+ }
+ }
+ let buf = &buf[curr..];
+ let s = unsafe {
+ core::mem::transmute::<&[core::mem::MaybeUninit<u8>], &str>(buf)
+ };
+
+ // not actually fixed size, but this should optimize right i hope..
+ self.f.write_fixed_size(s)?;
self.f.span_end(TokenType::Immediate);
Ok(())
}
@@ -1207,7 +1231,35 @@ impl <T: DisplaySink, Y: YaxColors> crate::long_mode::OperandVisitor for Coloriz
self.f.write_fixed_size("[")?;
unsafe { self.f.write_lt_8(regspec_label(&reg))?; }
self.f.write_fixed_size(" ")?;
- format_number_i32(self.colors, self.f, disp, NumberStyleHint::HexSignedWithSignSplit)?;
+
+ {
+ let mut v = disp as u32;
+ if disp < 0 {
+ self.f.write_fixed_size("- 0x")?;
+ v = -disp as u32;
+ } else {
+ self.f.write_fixed_size("+ 0x")?;
+ }
+ let mut buf = [core::mem::MaybeUninit::<u8>::uninit(); 8];
+ let mut curr = buf.len();
+ loop {
+ let digit = v % 16;
+ let c = c_to_hex(digit as u8);
+ curr -= 1;
+ buf[curr].write(c);
+ v = v / 16;
+ if v == 0 {
+ break;
+ }
+ }
+ let buf = &buf[curr..];
+ let s = unsafe {
+ core::mem::transmute::<&[core::mem::MaybeUninit<u8>], &str>(buf)
+ };
+
+ // not actually fixed size, but this should optimize right i hope..
+ self.f.write_fixed_size(s)?;
+ }
self.f.write_fixed_size("]")
}
fn visit_deref(&mut self, reg: RegSpec) -> Result<Self::Ok, Self::Error> {