From 2ace9fd11db103aecebf451aff3bc23838248667 Mon Sep 17 00:00:00 2001 From: Blue Swirl Date: Sun, 2 Sep 2012 07:27:38 +0000 Subject: [PATCH] target-m68k: switch to AREG0 free mode Add an explicit CPUState parameter instead of relying on AREG0 and switch to AREG0 free mode. Signed-off-by: Blue Swirl Signed-off-by: Michael Roth --- configure | 2 +- target-m68k/Makefile.objs | 2 -- target-m68k/helpers.h | 2 +- target-m68k/op_helper.c | 68 +++++++++++++++++------------------------- target-m68k/translate.c | 76 ++++++++++++++++++++++++----------------------- 5 files changed, 68 insertions(+), 82 deletions(-) diff --git a/configure b/configure index 1e3ea7f..af03942 100755 --- a/configure +++ b/configure @@ -3839,7 +3839,7 @@ symlink "$source_path/Makefile.target" "$target_dir/Makefile" case "$target_arch2" in - alpha | i386 | lm32 | or32 | s390x | sparc* | x86_64 | xtensa* | ppc*) + alpha | i386 | lm32 | m68k | or32 | s390x | sparc* | x86_64 | xtensa* | ppc*) echo "CONFIG_TCG_PASS_AREG0=y" >> $config_target_mak ;; esac diff --git a/target-m68k/Makefile.objs b/target-m68k/Makefile.objs index cda6015..7eccfab 100644 --- a/target-m68k/Makefile.objs +++ b/target-m68k/Makefile.objs @@ -1,5 +1,3 @@ obj-y += m68k-semi.o obj-y += translate.o op_helper.o helper.o cpu.o obj-$(CONFIG_SOFTMMU) += machine.o - -$(obj)/op_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS) diff --git a/target-m68k/helpers.h b/target-m68k/helpers.h index cb8a0c7..8112b44 100644 --- a/target-m68k/helpers.h +++ b/target-m68k/helpers.h @@ -49,6 +49,6 @@ DEF_HELPER_3(set_mac_exts, void, env, i32, i32) DEF_HELPER_3(set_mac_extu, void, env, i32, i32) DEF_HELPER_2(flush_flags, void, env, i32) -DEF_HELPER_1(raise_exception, void, i32) +DEF_HELPER_2(raise_exception, void, env, i32) #include "def-helper.h" diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c index 1971a57..3116287 100644 --- a/target-m68k/op_helper.c +++ b/target-m68k/op_helper.c @@ -17,17 +17,16 @@ * License along with this library; if not, see . */ #include "cpu.h" -#include "dyngen-exec.h" #include "helpers.h" #if defined(CONFIG_USER_ONLY) -void do_interrupt(CPUM68KState *env1) +void do_interrupt(CPUM68KState *env) { - env1->exception_index = -1; + env->exception_index = -1; } -void do_interrupt_m68k_hardirq(CPUM68KState *env1) +void do_interrupt_m68k_hardirq(CPUM68KState *env) { } @@ -54,16 +53,12 @@ extern int semihosting_enabled; /* Try to fill the TLB and return an exception if error. If retaddr is NULL, it means that the function was called in C code (i.e. not from generated code or from helper.c) */ -/* XXX: fix it to restore all registers */ -void tlb_fill(CPUM68KState *env1, target_ulong addr, int is_write, int mmu_idx, +void tlb_fill(CPUM68KState *env, target_ulong addr, int is_write, int mmu_idx, uintptr_t retaddr) { TranslationBlock *tb; - CPUM68KState *saved_env; int ret; - saved_env = env; - env = env1; ret = cpu_m68k_handle_mmu_fault(env, addr, is_write, mmu_idx); if (unlikely(ret)) { if (retaddr) { @@ -77,24 +72,23 @@ void tlb_fill(CPUM68KState *env1, target_ulong addr, int is_write, int mmu_idx, } cpu_loop_exit(env); } - env = saved_env; } -static void do_rte(void) +static void do_rte(CPUM68KState *env) { uint32_t sp; uint32_t fmt; sp = env->aregs[7]; - fmt = ldl_kernel(sp); - env->pc = ldl_kernel(sp + 4); + fmt = cpu_ldl_kernel(env, sp); + env->pc = cpu_ldl_kernel(env, sp + 4); sp |= (fmt >> 28) & 3; env->sr = fmt & 0xffff; m68k_switch_sp(env); env->aregs[7] = sp + 8; } -static void do_interrupt_all(int is_hw) +static void do_interrupt_all(CPUM68KState *env, int is_hw) { uint32_t sp; uint32_t fmt; @@ -108,14 +102,14 @@ static void do_interrupt_all(int is_hw) switch (env->exception_index) { case EXCP_RTE: /* Return from an exception. */ - do_rte(); + do_rte(env); return; case EXCP_HALT_INSN: if (semihosting_enabled && (env->sr & SR_S) != 0 && (env->pc & 3) == 0 - && lduw_code(env->pc - 4) == 0x4e71 - && ldl_code(env->pc) == 0x4e7bf000) { + && cpu_lduw_code(env, env->pc - 4) == 0x4e71 + && cpu_ldl_code(env, env->pc) == 0x4e7bf000) { env->pc += 4; do_m68k_semihosting(env, env->dregs[0]); return; @@ -151,44 +145,34 @@ static void do_interrupt_all(int is_hw) /* ??? This could cause MMU faults. */ sp &= ~3; sp -= 4; - stl_kernel(sp, retaddr); + cpu_stl_kernel(env, sp, retaddr); sp -= 4; - stl_kernel(sp, fmt); + cpu_stl_kernel(env, sp, fmt); env->aregs[7] = sp; /* Jump to vector. */ - env->pc = ldl_kernel(env->vbr + vector); + env->pc = cpu_ldl_kernel(env, env->vbr + vector); } -void do_interrupt(CPUM68KState *env1) +void do_interrupt(CPUM68KState *env) { - CPUM68KState *saved_env; - - saved_env = env; - env = env1; - do_interrupt_all(0); - env = saved_env; + do_interrupt_all(env, 0); } -void do_interrupt_m68k_hardirq(CPUM68KState *env1) +void do_interrupt_m68k_hardirq(CPUM68KState *env) { - CPUM68KState *saved_env; - - saved_env = env; - env = env1; - do_interrupt_all(1); - env = saved_env; + do_interrupt_all(env, 1); } #endif -static void raise_exception(int tt) +static void raise_exception(CPUM68KState *env, int tt) { env->exception_index = tt; cpu_loop_exit(env); } -void HELPER(raise_exception)(uint32_t tt) +void HELPER(raise_exception)(CPUM68KState *env, uint32_t tt) { - raise_exception(tt); + raise_exception(env, tt); } void HELPER(divu)(CPUM68KState *env, uint32_t word) @@ -202,8 +186,9 @@ void HELPER(divu)(CPUM68KState *env, uint32_t word) num = env->div1; den = env->div2; /* ??? This needs to make sure the throwing location is accurate. */ - if (den == 0) - raise_exception(EXCP_DIV0); + if (den == 0) { + raise_exception(env, EXCP_DIV0); + } quot = num / den; rem = num % den; flags = 0; @@ -231,8 +216,9 @@ void HELPER(divs)(CPUM68KState *env, uint32_t word) num = env->div1; den = env->div2; - if (den == 0) - raise_exception(EXCP_DIV0); + if (den == 0) { + raise_exception(env, EXCP_DIV0); + } quot = num / den; rem = num % den; flags = 0; diff --git a/target-m68k/translate.c b/target-m68k/translate.c index 9fc1e31..10bb303 100644 --- a/target-m68k/translate.c +++ b/target-m68k/translate.c @@ -260,9 +260,9 @@ static TCGv gen_ldst(DisasContext *s, int opsize, TCGv addr, TCGv val, static inline uint32_t read_im32(DisasContext *s) { uint32_t im; - im = ((uint32_t)lduw_code(s->pc)) << 16; + im = ((uint32_t)cpu_lduw_code(cpu_single_env, s->pc)) << 16; s->pc += 2; - im |= lduw_code(s->pc); + im |= cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; return im; } @@ -297,7 +297,7 @@ static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base) uint32_t bd, od; offset = s->pc; - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if ((ext & 0x800) == 0 && !m68k_feature(s->env, M68K_FEATURE_WORD_INDEX)) @@ -311,7 +311,7 @@ static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base) if ((ext & 0x30) > 0x10) { /* base displacement */ if ((ext & 0x30) == 0x20) { - bd = (int16_t)lduw_code(s->pc); + bd = (int16_t)cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; } else { bd = read_im32(s); @@ -360,7 +360,7 @@ static TCGv gen_lea_indexed(DisasContext *s, int opsize, TCGv base) if ((ext & 3) > 1) { /* outer displacement */ if ((ext & 3) == 2) { - od = (int16_t)lduw_code(s->pc); + od = (int16_t)cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; } else { od = read_im32(s); @@ -514,7 +514,7 @@ static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) case 5: /* Indirect displacement. */ reg = AREG(insn, 0); tmp = tcg_temp_new(); - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; tcg_gen_addi_i32(tmp, reg, (int16_t)ext); return tmp; @@ -524,7 +524,7 @@ static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) case 7: /* Other */ switch (insn & 7) { case 0: /* Absolute short. */ - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; return tcg_const_i32(offset); case 1: /* Absolute long. */ @@ -532,7 +532,7 @@ static TCGv gen_lea(DisasContext *s, uint16_t insn, int opsize) return tcg_const_i32(offset); case 2: /* pc displacement */ offset = s->pc; - offset += ldsw_code(s->pc); + offset += cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; return tcg_const_i32(offset); case 3: /* pc index+displacement. */ @@ -638,17 +638,19 @@ static TCGv gen_ea(DisasContext *s, uint16_t insn, int opsize, TCGv val, /* Sign extend values for consistency. */ switch (opsize) { case OS_BYTE: - if (what == EA_LOADS) - offset = ldsb_code(s->pc + 1); - else - offset = ldub_code(s->pc + 1); + if (what == EA_LOADS) { + offset = cpu_ldsb_code(cpu_single_env, s->pc + 1); + } else { + offset = cpu_ldub_code(cpu_single_env, s->pc + 1); + } s->pc += 2; break; case OS_WORD: - if (what == EA_LOADS) - offset = ldsw_code(s->pc); - else - offset = lduw_code(s->pc); + if (what == EA_LOADS) { + offset = cpu_ldsw_code(cpu_single_env, s->pc); + } else { + offset = cpu_lduw_code(cpu_single_env, s->pc); + } s->pc += 2; break; case OS_LONG: @@ -815,7 +817,7 @@ static void gen_exception(DisasContext *s, uint32_t where, int nr) { gen_flush_cc_op(s); gen_jmp_im(s, where); - gen_helper_raise_exception(tcg_const_i32(nr)); + gen_helper_raise_exception(cpu_env, tcg_const_i32(nr)); } static inline void gen_addr_fault(DisasContext *s) @@ -934,7 +936,7 @@ DISAS_INSN(divl) TCGv reg; uint16_t ext; - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (ext & 0x87f8) { gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); @@ -1086,7 +1088,7 @@ DISAS_INSN(movem) TCGv tmp; int is_load; - mask = lduw_code(s->pc); + mask = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; tmp = gen_lea(s, insn, OS_LONG); if (IS_NULL_QREG(tmp)) { @@ -1130,7 +1132,7 @@ DISAS_INSN(bitop_im) opsize = OS_LONG; op = (insn >> 6) & 3; - bitnum = lduw_code(s->pc); + bitnum = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (bitnum & 0xff00) { disas_undef(s, insn); @@ -1383,7 +1385,7 @@ static void gen_set_sr(DisasContext *s, uint16_t insn, int ccr_only) else if ((insn & 0x3f) == 0x3c) { uint16_t val; - val = lduw_code(s->pc); + val = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; gen_set_sr_im(s, val, ccr_only); } @@ -1507,7 +1509,7 @@ DISAS_INSN(mull) /* The upper 32 bits of the product are discarded, so muls.l and mulu.l are functionally equivalent. */ - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (ext & 0x87ff) { gen_exception(s, s->pc - 4, EXCP_UNSUPPORTED); @@ -1528,7 +1530,7 @@ DISAS_INSN(link) TCGv reg; TCGv tmp; - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; reg = AREG(insn, 0); tmp = tcg_temp_new(); @@ -1649,7 +1651,7 @@ DISAS_INSN(branch) op = (insn >> 8) & 0xf; offset = (int8_t)insn; if (offset == 0) { - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; } else if (offset == -1) { offset = read_im32(s); @@ -1934,13 +1936,13 @@ DISAS_INSN(strldsr) uint32_t addr; addr = s->pc - 2; - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (ext != 0x46FC) { gen_exception(s, addr, EXCP_UNSUPPORTED); return; } - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (IS_USER(s) || (ext & SR_S) == 0) { gen_exception(s, addr, EXCP_PRIVILEGE); @@ -2008,7 +2010,7 @@ DISAS_INSN(stop) return; } - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; gen_set_sr_im(s, ext, 0); @@ -2035,7 +2037,7 @@ DISAS_INSN(movec) return; } - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; if (ext & 0x8000) { @@ -2100,7 +2102,7 @@ DISAS_INSN(fpu) int set_dest; int opsize; - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; opmode = ext & 0x7f; switch ((ext >> 13) & 7) { @@ -2136,7 +2138,7 @@ DISAS_INSN(fpu) tcg_gen_addi_i32(tmp32, tmp32, -8); break; case 5: - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; tcg_gen_addi_i32(tmp32, tmp32, offset); break; @@ -2250,12 +2252,12 @@ DISAS_INSN(fpu) tcg_gen_addi_i32(tmp32, tmp32, -8); break; case 5: - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; tcg_gen_addi_i32(tmp32, tmp32, offset); break; case 7: - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); offset += s->pc - 2; s->pc += 2; tcg_gen_addi_i32(tmp32, tmp32, offset); @@ -2381,10 +2383,10 @@ DISAS_INSN(fbcc) int l1; addr = s->pc; - offset = ldsw_code(s->pc); + offset = cpu_ldsw_code(cpu_single_env, s->pc); s->pc += 2; if (insn & (1 << 6)) { - offset = (offset << 16) | lduw_code(s->pc); + offset = (offset << 16) | cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; } @@ -2506,7 +2508,7 @@ DISAS_INSN(mac) s->done_mac = 1; } - ext = lduw_code(s->pc); + ext = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; acc = ((insn >> 7) & 1) | ((ext >> 3) & 2); @@ -2941,7 +2943,7 @@ static void disas_m68k_insn(CPUM68KState * env, DisasContext *s) { uint16_t insn; - insn = lduw_code(s->pc); + insn = cpu_lduw_code(cpu_single_env, s->pc); s->pc += 2; opcode_table[insn](s, insn); @@ -3028,7 +3030,7 @@ gen_intermediate_code_internal(CPUM68KState *env, TranslationBlock *tb, gen_flush_cc_op(dc); tcg_gen_movi_i32(QREG_PC, dc->pc); } - gen_helper_raise_exception(tcg_const_i32(EXCP_DEBUG)); + gen_helper_raise_exception(cpu_env, tcg_const_i32(EXCP_DEBUG)); } else { switch(dc->is_jmp) { case DISAS_NEXT: -- 1.7.12.1