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authorPeter Maydell <peter.maydell@linaro.org>2024-10-04 17:08:01 +0100
committerPeter Maydell <peter.maydell@linaro.org>2024-10-04 17:08:01 +0100
commita3fb4e93a3a7cf2be355c41cd550bef856f5ffe4 (patch)
tree942ff6c7ae33112c34bd35c9c9c0d1173508c53e /linux-user/vm86.c
parent33dab2dda093a330656778c48ce88fb9c446cbf9 (diff)
parent6b7d2f6e1896fb675e8518ed61c792d4dd92e034 (diff)
downloadfocaccia-qemu-a3fb4e93a3a7cf2be355c41cd550bef856f5ffe4.tar.gz
focaccia-qemu-a3fb4e93a3a7cf2be355c41cd550bef856f5ffe4.zip
Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging
trivial patches for 2024-10-04

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# gpg: Good signature from "Michael Tokarev <mjt@debian.org>" [full]
# gpg:                 aka "Michael Tokarev <mjt@corpit.ru>" [full]
# gpg:                 aka "Michael Tokarev <mjt@tls.msk.ru>" [full]
# Primary key fingerprint: 9D8B E14E 3F2A 9DD7 9199  28F1 61AD 3D98 ECDF 2C8E
#      Subkey fingerprint: 64AA 2AB5 31D5 6903 366B  FEF9 82AA 4A24 3B1E 9478

* tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu: (23 commits)
  MAINTAINERS: Add myself as maintainer of e500 machines
  docs/devel: Mention post_load hook restrictions where we document the hook
  tests/functional: Fix hash validation
  hw/mips: Build fw_cfg.c once
  tests/tcg/plugins: Remove remainder of the cris target
  block-backend: Remove deadcode
  hw/net/rocker: Remove unused rocker_fp_ports
  hw/pci: Remove unused pcie_chassis_find_slot
  replay: Remove unused replay_disable_events
  remote: Remove unused remote_iohub_finalize
  vhost: Remove unused vhost_dev_{load|save}_inflight
  ui/cursor: remove cursor_get_mono_image
  hw: Remove unused fw_cfg_init_io
  linux-user: Remove unused handle_vm86_fault
  hw/char: Remove unused serial_set_frequency
  hw/net/net_rx_pkt: Remove deadcode
  net: Remove deadcode
  q35: Remove unused mch_mcfg_base
  hw/xen: Remove deadcode
  MAINTAINERS: remove gensyscalls.sh from the linux-user section
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'linux-user/vm86.c')
-rw-r--r--linux-user/vm86.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/linux-user/vm86.c b/linux-user/vm86.c
index 9f512a2242..31a2d707cf 100644
--- a/linux-user/vm86.c
+++ b/linux-user/vm86.c
@@ -255,142 +255,6 @@ void handle_vm86_trap(CPUX86State *env, int trapno)
     }
 }
 
-#define CHECK_IF_IN_TRAP() \
-      if ((ts->vm86plus.vm86plus.flags & TARGET_vm86dbg_active) && \
-          (ts->vm86plus.vm86plus.flags & TARGET_vm86dbg_TFpendig)) \
-                newflags |= TF_MASK
-
-#define VM86_FAULT_RETURN \
-        if ((ts->vm86plus.vm86plus.flags & TARGET_force_return_for_pic) && \
-            (ts->v86flags & (IF_MASK | VIF_MASK))) \
-            return_to_32bit(env, TARGET_VM86_PICRETURN); \
-        return
-
-void handle_vm86_fault(CPUX86State *env)
-{
-    CPUState *cs = env_cpu(env);
-    TaskState *ts = get_task_state(cs);
-    uint32_t csp, ssp;
-    unsigned int ip, sp, newflags, newip, newcs, opcode, intno;
-    int data32, pref_done;
-
-    csp = env->segs[R_CS].selector << 4;
-    ip = env->eip & 0xffff;
-
-    ssp = env->segs[R_SS].selector << 4;
-    sp = env->regs[R_ESP] & 0xffff;
-
-    LOG_VM86("VM86 exception %04x:%08x\n",
-             env->segs[R_CS].selector, env->eip);
-
-    data32 = 0;
-    pref_done = 0;
-    do {
-        opcode = vm_getb(env, csp, ip);
-        ADD16(ip, 1);
-        switch (opcode) {
-        case 0x66:      /* 32-bit data */     data32=1; break;
-        case 0x67:      /* 32-bit address */  break;
-        case 0x2e:      /* CS */              break;
-        case 0x3e:      /* DS */              break;
-        case 0x26:      /* ES */              break;
-        case 0x36:      /* SS */              break;
-        case 0x65:      /* GS */              break;
-        case 0x64:      /* FS */              break;
-        case 0xf2:      /* repnz */	      break;
-        case 0xf3:      /* rep */             break;
-        default: pref_done = 1;
-        }
-    } while (!pref_done);
-
-    /* VM86 mode */
-    switch(opcode) {
-    case 0x9c: /* pushf */
-        if (data32) {
-            vm_putl(env, ssp, sp - 4, get_vflags(env));
-            ADD16(env->regs[R_ESP], -4);
-        } else {
-            vm_putw(env, ssp, sp - 2, get_vflags(env));
-            ADD16(env->regs[R_ESP], -2);
-        }
-        env->eip = ip;
-        VM86_FAULT_RETURN;
-
-    case 0x9d: /* popf */
-        if (data32) {
-            newflags = vm_getl(env, ssp, sp);
-            ADD16(env->regs[R_ESP], 4);
-        } else {
-            newflags = vm_getw(env, ssp, sp);
-            ADD16(env->regs[R_ESP], 2);
-        }
-        env->eip = ip;
-        CHECK_IF_IN_TRAP();
-        if (data32) {
-            if (set_vflags_long(newflags, env))
-                return;
-        } else {
-            if (set_vflags_short(newflags, env))
-                return;
-        }
-        VM86_FAULT_RETURN;
-
-    case 0xcd: /* int */
-        intno = vm_getb(env, csp, ip);
-        ADD16(ip, 1);
-        env->eip = ip;
-        if (ts->vm86plus.vm86plus.flags & TARGET_vm86dbg_active) {
-            if ( (ts->vm86plus.vm86plus.vm86dbg_intxxtab[intno >> 3] >>
-                  (intno &7)) & 1) {
-                return_to_32bit(env, TARGET_VM86_INTx + (intno << 8));
-                return;
-            }
-        }
-        do_int(env, intno);
-        break;
-
-    case 0xcf: /* iret */
-        if (data32) {
-            newip = vm_getl(env, ssp, sp) & 0xffff;
-            newcs = vm_getl(env, ssp, sp + 4) & 0xffff;
-            newflags = vm_getl(env, ssp, sp + 8);
-            ADD16(env->regs[R_ESP], 12);
-        } else {
-            newip = vm_getw(env, ssp, sp);
-            newcs = vm_getw(env, ssp, sp + 2);
-            newflags = vm_getw(env, ssp, sp + 4);
-            ADD16(env->regs[R_ESP], 6);
-        }
-        env->eip = newip;
-        cpu_x86_load_seg(env, R_CS, newcs);
-        CHECK_IF_IN_TRAP();
-        if (data32) {
-            if (set_vflags_long(newflags, env))
-                return;
-        } else {
-            if (set_vflags_short(newflags, env))
-                return;
-        }
-        VM86_FAULT_RETURN;
-
-    case 0xfa: /* cli */
-        env->eip = ip;
-        clear_IF(env);
-        VM86_FAULT_RETURN;
-
-    case 0xfb: /* sti */
-        env->eip = ip;
-        if (set_IF(env))
-            return;
-        VM86_FAULT_RETURN;
-
-    default:
-        /* real VM86 GPF exception */
-        return_to_32bit(env, TARGET_VM86_UNKNOWN);
-        break;
-    }
-}
-
 int do_vm86(CPUX86State *env, long subfunction, abi_ulong vm86_addr)
 {
     CPUState *cs = env_cpu(env);