From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [PULL 33/35] tcg/mips: Allow JAL to be out of range in tcg_out_bswap_subr
Date: Thu, 16 Sep 2021 08:30:23 -0700 [thread overview]
Message-ID: <20210916153025.1944763-34-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210916153025.1944763-1-richard.henderson@linaro.org>
Weaning off of unique alignment requirements, so allow JAL
to not reach the target. TCG_TMP1 is always available for
use as a scratch because it is clobbered by the subroutine
being called.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/mips/tcg-target.c.inc | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 320795a637..3a40af8799 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -573,8 +573,10 @@ static void tcg_out_bswap16(TCGContext *s, TCGReg ret, TCGReg arg, int flags)
static void tcg_out_bswap_subr(TCGContext *s, const tcg_insn_unit *sub)
{
- bool ok = tcg_out_opc_jmp(s, OPC_JAL, sub);
- tcg_debug_assert(ok);
+ if (!tcg_out_opc_jmp(s, OPC_JAL, sub)) {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP1, (uintptr_t)sub);
+ tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_TMP1, 0);
+ }
}
static void tcg_out_bswap32(TCGContext *s, TCGReg ret, TCGReg arg, int flags)
--
2.25.1
next prev parent reply other threads:[~2021-09-16 15:57 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-16 15:29 [PULL 00/35] tcg patch queue Richard Henderson
2021-09-16 15:29 ` [PULL 01/35] include/exec: Move cpu_signal_handler declaration Richard Henderson
2021-09-16 15:29 ` [PULL 02/35] accel/tcg: Restrict cpu_handle_halt() to sysemu Richard Henderson
2021-09-16 15:29 ` [PULL 03/35] hw/core: Restrict cpu_has_work() " Richard Henderson
2021-09-16 15:29 ` [PULL 04/35] hw/core: Un-inline cpu_has_work() Richard Henderson
2021-09-16 15:29 ` [PULL 05/35] sysemu: Introduce AccelOpsClass::has_work() Richard Henderson
2021-09-16 15:29 ` [PULL 06/35] accel/kvm: Implement AccelOpsClass::has_work() Richard Henderson
2021-09-16 15:29 ` [PULL 07/35] accel/whpx: " Richard Henderson
2021-09-16 15:29 ` [PULL 08/35] accel/tcg: Implement AccelOpsClass::has_work() as stub Richard Henderson
2021-09-16 15:29 ` [PULL 09/35] target/alpha: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 10/35] target/arm: Restrict has_work() handler to sysemu and TCG Richard Henderson
2021-09-16 15:30 ` [PULL 11/35] target/avr: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 12/35] target/cris: " Richard Henderson
2021-09-16 15:30 ` [PULL 13/35] target/hexagon: Remove unused has_work() handler Richard Henderson
2021-09-16 15:30 ` [PULL 14/35] target/hppa: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 15/35] target/i386: Restrict has_work() handler to sysemu and TCG Richard Henderson
2021-09-16 15:30 ` [PULL 16/35] target/m68k: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 17/35] target/microblaze: " Richard Henderson
2021-09-16 15:30 ` [PULL 18/35] target/mips: Restrict has_work() handler to sysemu and TCG Richard Henderson
2021-09-16 15:30 ` [PULL 19/35] target/nios2: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 20/35] target/openrisc: " Richard Henderson
2021-09-16 15:30 ` [PULL 21/35] target/ppc: Introduce PowerPCCPUClass::has_work() Richard Henderson
2021-09-16 15:30 ` [PULL 22/35] target/ppc: Restrict has_work() handlers to sysemu and TCG Richard Henderson
2021-09-16 15:30 ` [PULL 23/35] target/riscv: Restrict has_work() handler " Richard Henderson
2021-09-16 15:30 ` [PULL 24/35] target/rx: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 25/35] target/s390x: Restrict has_work() handler to sysemu and TCG Richard Henderson
2021-09-16 15:30 ` [PULL 26/35] target/sh4: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 27/35] target/sparc: Remove pointless use of CONFIG_TCG definition Richard Henderson
2021-09-16 15:30 ` [PULL 28/35] target/sparc: Restrict has_work() handler to sysemu Richard Henderson
2021-09-16 15:30 ` [PULL 29/35] target/tricore: " Richard Henderson
2021-09-16 15:30 ` [PULL 30/35] target/xtensa: " Richard Henderson
2021-09-16 15:30 ` [PULL 31/35] accel: Add missing AccelOpsClass::has_work() and drop SysemuCPUOps one Richard Henderson
2021-09-16 15:30 ` [PULL 32/35] tcg/mips: Drop inline markers Richard Henderson
2021-09-16 15:30 ` Richard Henderson [this message]
2021-09-16 15:30 ` [PULL 34/35] tcg/mips: Unset TCG_TARGET_HAS_direct_jump Richard Henderson
2021-09-16 15:30 ` [PULL 35/35] tcg/mips: Drop special alignment for code_gen_buffer Richard Henderson
2021-09-20 10:07 ` [PULL 00/35] tcg patch queue Peter Maydell
2021-09-20 12:51 ` Philippe Mathieu-Daudé
2021-09-20 13:14 ` Philippe Mathieu-Daudé
2021-09-20 13:52 ` Philippe Mathieu-Daudé
2021-09-20 21:16 ` Philippe Mathieu-Daudé
2021-09-21 9:28 ` Peter Maydell
2021-09-21 9:41 ` Philippe Mathieu-Daudé
2021-09-21 9:47 ` Peter Maydell
2021-09-20 13:19 ` Richard Henderson
2021-09-21 15:25 ` Peter Maydell
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