mirror of https://gitee.com/openkylin/qemu.git
TCG: Mac OS X support for ppc64 target
Darwin/ppc64 does not use function descriptors, adapt prologue and tcg_out_call accordingly. GPR2 is available for general use, so let's use it. http://developer.apple.com/mac/library/documentation/DeveloperTools/Conceptual/LowLevelABI/110-64-bit_PowerPC_Function_Calling_Conventions/64bitPowerPC.html v2: - Don't mark reserved GPR13 as callee-save. - Move tcg_out_b up. - Fix unused variable warning in prologue. Signed-off-by: Andreas Faerber <andreas.faerber@web.de> Cc: malc <av1474@comtv.ru> Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
Andreas Faerber
malc
parent
ee4660f925
commit
5d7ff5bbde
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@ -104,6 +104,9 @@ static const int tcg_target_reg_alloc_order[] = {
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TCG_REG_R29,
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TCG_REG_R30,
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TCG_REG_R31,
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#ifdef __APPLE__
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TCG_REG_R2,
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#endif
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TCG_REG_R3,
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TCG_REG_R4,
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TCG_REG_R5,
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@ -112,7 +115,9 @@ static const int tcg_target_reg_alloc_order[] = {
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TCG_REG_R8,
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TCG_REG_R9,
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TCG_REG_R10,
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#ifndef __APPLE__
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TCG_REG_R11,
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#endif
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TCG_REG_R12,
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TCG_REG_R24,
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TCG_REG_R25,
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@ -136,6 +141,9 @@ static const int tcg_target_call_oarg_regs[2] = {
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};
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static const int tcg_target_callee_save_regs[] = {
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#ifdef __APPLE__
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TCG_REG_R11,
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#endif
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TCG_REG_R14,
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TCG_REG_R15,
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TCG_REG_R16,
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@ -477,8 +485,31 @@ static void tcg_out_movi (TCGContext *s, TCGType type,
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}
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}
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static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target)
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{
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tcg_target_long disp;
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disp = target - (tcg_target_long) s->code_ptr;
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if ((disp << 38) >> 38 == disp)
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tcg_out32 (s, B | (disp & 0x3fffffc) | mask);
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else {
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tcg_out_movi (s, TCG_TYPE_I64, 0, (tcg_target_long) target);
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tcg_out32 (s, MTSPR | RS (0) | CTR);
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tcg_out32 (s, BCCTR | BO_ALWAYS | mask);
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}
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}
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static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg)
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{
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#ifdef __APPLE__
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if (const_arg) {
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tcg_out_b (s, LK, arg);
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}
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else {
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tcg_out32 (s, MTSPR | RS (arg) | LR);
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tcg_out32 (s, BCLR | BO_ALWAYS | LK);
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}
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#else
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int reg;
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if (const_arg) {
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@ -492,6 +523,7 @@ static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg)
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tcg_out32 (s, LD | RT (11) | RA (reg) | 16);
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tcg_out32 (s, LD | RT (2) | RA (reg) | 8);
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tcg_out32 (s, BCCTR | BO_ALWAYS | LK);
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#endif
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}
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static void tcg_out_ldst (TCGContext *s, int ret, int addr,
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@ -516,20 +548,6 @@ static void tcg_out_ldsta (TCGContext *s, int ret, int addr,
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}
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}
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static void tcg_out_b (TCGContext *s, int mask, tcg_target_long target)
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{
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tcg_target_long disp;
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disp = target - (tcg_target_long) s->code_ptr;
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if ((disp << 38) >> 38 == disp)
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tcg_out32 (s, B | (disp & 0x3fffffc) | mask);
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else {
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tcg_out_movi (s, TCG_TYPE_I64, 0, (tcg_target_long) target);
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tcg_out32 (s, MTSPR | RS (0) | CTR);
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tcg_out32 (s, BCCTR | BO_ALWAYS | mask);
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}
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}
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#if defined (CONFIG_SOFTMMU)
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#include "../../softmmu_defs.h"
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@ -845,7 +863,9 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
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void tcg_target_qemu_prologue (TCGContext *s)
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{
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int i, frame_size;
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#ifndef __APPLE__
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uint64_t addr;
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#endif
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frame_size = 0
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+ 8 /* back chain */
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@ -859,10 +879,12 @@ void tcg_target_qemu_prologue (TCGContext *s)
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;
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frame_size = (frame_size + 15) & ~15;
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#ifndef __APPLE__
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/* First emit adhoc function descriptor */
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addr = (uint64_t) s->code_ptr + 24;
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tcg_out32 (s, addr >> 32); tcg_out32 (s, addr); /* entry point */
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s->code_ptr += 16; /* skip TOC and environment pointer */
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#endif
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/* Prologue */
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tcg_out32 (s, MFSPR | RT (0) | LR);
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@ -1516,6 +1538,9 @@ void tcg_target_init (TCGContext *s)
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tcg_regset_set32 (tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
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tcg_regset_set32 (tcg_target_call_clobber_regs, 0,
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(1 << TCG_REG_R0) |
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#ifdef __APPLE__
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(1 << TCG_REG_R2) |
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#endif
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(1 << TCG_REG_R3) |
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(1 << TCG_REG_R4) |
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(1 << TCG_REG_R5) |
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@ -1531,7 +1556,9 @@ void tcg_target_init (TCGContext *s)
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tcg_regset_clear (s->reserved_regs);
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tcg_regset_set_reg (s->reserved_regs, TCG_REG_R0);
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tcg_regset_set_reg (s->reserved_regs, TCG_REG_R1);
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#ifndef __APPLE__
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tcg_regset_set_reg (s->reserved_regs, TCG_REG_R2);
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#endif
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tcg_regset_set_reg (s->reserved_regs, TCG_REG_R13);
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#ifdef CONFIG_USE_GUEST_BASE
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