diff options
Diffstat (limited to 'src/codegen/c.zig')
| -rw-r--r-- | src/codegen/c.zig | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/codegen/c.zig b/src/codegen/c.zig index 2cd93d47fc..44b616c493 100644 --- a/src/codegen/c.zig +++ b/src/codegen/c.zig @@ -3018,10 +3018,12 @@ fn airAsm(f: *Function, inst: Air.Inst.Index) !CValue { if (output != .none) { return f.fail("TODO implement codegen for non-expr asm", .{}); } + const extra_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); const constraint = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); + const name = std.mem.sliceTo(extra_bytes[constraint.len + 1 ..], 0); // This equation accounts for the fact that even if we have exactly 4 bytes // for the string, we still use the next u32 for the null terminator. - extra_i += constraint.len / 4 + 1; + extra_i += (constraint.len + name.len + (2 + 3)) / 4; break constraint; } else null; @@ -3031,10 +3033,12 @@ fn airAsm(f: *Function, inst: Air.Inst.Index) !CValue { const inputs_extra_begin = extra_i; for (inputs) |input, i| { - const constraint = std.mem.sliceTo(std.mem.sliceAsBytes(f.air.extra[extra_i..]), 0); + const input_bytes = std.mem.sliceAsBytes(f.air.extra[extra_i..]); + const constraint = std.mem.sliceTo(input_bytes, 0); + const name = std.mem.sliceTo(input_bytes[constraint.len + 1 ..], 0); // This equation accounts for the fact that even if we have exactly 4 bytes // for the string, we still use the next u32 for the null terminator. - extra_i += constraint.len / 4 + 1; + extra_i += (constraint.len + name.len + (2 + 3)) / 4; if (constraint[0] == '{' and constraint[constraint.len - 1] == '}') { const reg = constraint[1 .. constraint.len - 1]; |