fridtjof/qemu-cr16
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tcg/mips: Remove support for O32 and N32 ABIs

Browse source 
See previous commit for rationale.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251009195210.33161-5-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2025-10-09 21:52:07 +02:00 • committed by Richard Henderson
parent 4384542a57
commit affedc6787
3 changed files with 9 additions and 60 deletions
Download patch file Download diff file Expand all files Collapse all files

8
tcg/mips/tcg-target-reg-bits.h
View file

@ -7,12 +7,10 @@
#ifndef TCG_TARGET_REG_BITS_H
#define TCG_TARGET_REG_BITS_H
#if _MIPS_SIM == _ABIO32
# define TCG_TARGET_REG_BITS 32
#elif _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
# define TCG_TARGET_REG_BITS 64
#else
#if !defined(_MIPS_SIM) || _MIPS_SIM != _ABI64
# error "Unknown ABI"
#endif
#define TCG_TARGET_REG_BITS 64
#endif

26
tcg/mips/tcg-target.c.inc
View file

@ -26,16 +26,10 @@
/* used for function call generation */
#define TCG_TARGET_STACK_ALIGN 16
#if _MIPS_SIM == _ABIO32
# define TCG_TARGET_CALL_STACK_OFFSET 16
# define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_EVEN
# define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_BY_REF
#else
# define TCG_TARGET_CALL_STACK_OFFSET 0
# define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL
# define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_NORMAL
#endif
#define TCG_TARGET_CALL_STACK_OFFSET 0
#define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL
#define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_NORMAL
#define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_EVEN
#if TCG_TARGET_REG_BITS == 32
@ -135,12 +129,10 @@ static const TCGReg tcg_target_call_iarg_regs[] = {
TCG_REG_A1,
TCG_REG_A2,
TCG_REG_A3,
#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
TCG_REG_T0,
TCG_REG_T1,
TCG_REG_T2,
TCG_REG_T3,
#endif
};
static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
@ -1053,17 +1045,11 @@ static void tcg_out_call_int(TCGContext *s, const tcg_insn_unit *arg, bool tail)
* Note that __mips_abicalls requires the called function's address
* to be loaded into $25 (t9), even if a direct branch is in range.
*
* For n64, always drop the pointer into the constant pool.
* We can re-use helper addresses often and do not want any
* of the longer sequences tcg_out_movi may try.
* We can re-use helper addresses often; always drop the pointer
* into the constant pool.
*/
if (sizeof(uintptr_t) == 8) {
tcg_out_movi_pool(s, TCG_REG_T9, (uintptr_t)arg, TCG_REG_TB);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T9, (uintptr_t)arg);
}
tcg_out_movi_pool(s, TCG_REG_T9, (uintptr_t)arg, TCG_REG_TB);
/* But do try a direct branch, allowing the cpu better insn prefetch. */
if (tail) {
if (!tcg_out_opc_jmp(s, OPC_J, arg)) {
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_T9, 0);