Support clobber_abi in BPF inline assembly

1 files changed, 13 insertions, 0 deletions

diff --git a/compiler/rustc_target/src/asm/mod.rs b/compiler/rustc_target/src/asm/mod.rs
index 1292f46f0c9..f17452b3ba0 100644
--- a/compiler/rustc_target/src/asm/mod.rs
+++ b/compiler/rustc_target/src/asm/mod.rs
@@ -934,6 +934,7 @@ pub enum InlineAsmClobberAbi {
     LoongArch,
     PowerPC,
     S390x,
+    Bpf,
     Msp430,
 }
 
@@ -1003,6 +1004,10 @@ impl InlineAsmClobberAbi {
                 "C" | "system" => Ok(InlineAsmClobberAbi::S390x),
                 _ => Err(&["C", "system"]),
             },
+            InlineAsmArch::Bpf => match name {
+                "C" | "system" => Ok(InlineAsmClobberAbi::Bpf),
+                _ => Err(&["C", "system"]),
+            },
             InlineAsmArch::Msp430 => match name {
                 "C" | "system" => Ok(InlineAsmClobberAbi::Msp430),
                 _ => Err(&["C", "system"]),
@@ -1278,6 +1283,14 @@ impl InlineAsmClobberAbi {
                     a8, a9, a10, a11, a12, a13, a14, a15,
                 }
             },
+            InlineAsmClobberAbi::Bpf => clobbered_regs! {
+                Bpf BpfInlineAsmReg {
+                    // Refs: Section 1.1 "Registers and calling convention" in BPF ABI Recommended Conventions and Guidelines v1.0
+                    // https://www.kernel.org/doc/html/latest/bpf/standardization/abi.html#registers-and-calling-convention
+
+                    r0, r1, r2, r3, r4, r5,
+                }
+            },
             InlineAsmClobberAbi::Msp430 => clobbered_regs! {
                 Msp430 Msp430InlineAsmReg {
                     r11, r12, r13, r14, r15,