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Improved wording in asm.md #1717

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3 changes: 2 additions & 1 deletion src/unsafe/asm.md
Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,8 @@ fn main() {
// String is stored as ascii in ebx, edx, ecx in order
// Because ebx is reserved, the asm needs to preserve the value of it.
// So we push and pop it around the main asm.
// (in 64 bit mode for 64 bit processors, 32 bit processors would use ebx)
// 64 bit mode on 64 bit processors does not allow pushing/popping of
// 32 bit registers (like ebx), so we have to use the extended rbx register instead.

unsafe {
asm!(
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