diff options
| author | Icenowy Zheng <uwu@icenowy.me> | 2025-04-17 15:22:06 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2025-05-19 13:38:04 +1000 |
| commit | 22b448ccc6611a59d4aa54419f4d88c1f343cb35 (patch) | |
| tree | 8e2cf5a114749a4eb3bc00b912e6187aa14a7162 /common-user | |
| parent | ad63158bdb33dab5704ea1cf740d2ea0387175df (diff) | |
| download | focaccia-qemu-22b448ccc6611a59d4aa54419f4d88c1f343cb35.tar.gz focaccia-qemu-22b448ccc6611a59d4aa54419f4d88c1f343cb35.zip | |
common-user/host/riscv: use tail pseudoinstruction for calling tail
The j pseudoinstruction maps to a JAL instruction, which can only handle a jump to somewhere with a signed 20-bit destination. In case of static linking and LTO'ing this easily leads to "relocation truncated to fit" error. Switch to use tail pseudoinstruction, which is the standard way to tail-call a function in medium code model (emits AUIPC+JALR). Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20250417072206.364008-1-uwu@icenowy.me> Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Cc: qemu-stable@nongnu.org
Diffstat (limited to 'common-user')
| -rw-r--r-- | common-user/host/riscv/safe-syscall.inc.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/common-user/host/riscv/safe-syscall.inc.S b/common-user/host/riscv/safe-syscall.inc.S index dfe83c300e..c8b81e33d0 100644 --- a/common-user/host/riscv/safe-syscall.inc.S +++ b/common-user/host/riscv/safe-syscall.inc.S @@ -69,11 +69,11 @@ safe_syscall_end: /* code path setting errno */ 0: neg a0, a0 - j safe_syscall_set_errno_tail + tail safe_syscall_set_errno_tail /* code path when we didn't execute the syscall */ 2: li a0, QEMU_ERESTARTSYS - j safe_syscall_set_errno_tail + tail safe_syscall_set_errno_tail .cfi_endproc .size safe_syscall_base, .-safe_syscall_base |