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x86_emulate: Define and use BUG() and bool_t.
Original patch by Jan Beulich <jbeulich@suse.com> Signed-off-by: Keir Fraser <keir@xen.org>
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Keir Fraser committed
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2 files changed
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@@ -1,7 +1,13 @@
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xen/xen.h>
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typedef bool bool_t;
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#define BUG() abort()
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#include "x86_emulate/x86_emulate.h"
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#include "x86_emulate/x86_emulate.c"
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@@ -538,7 +538,7 @@ do { \
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* Given byte has even parity (even number of 1s)? SDM Vol. 1 Sec. 3.4.3.1,
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* "Status Flags": EFLAGS.PF reflects parity of least-sig. byte of result only.
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*/
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static int even_parity(uint8_t v)
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static bool_t even_parity(uint8_t v)
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{
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asm ( "test %b0,%b0; setp %b0" : "=a" (v) : "0" (v) );
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return v;
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@@ -728,9 +728,9 @@ static int read_ulong(
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* IN: Multiplicand=m[0], Multiplier=m[1]
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* OUT: Return CF/OF (overflow status); Result=m[1]:m[0]
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*/
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static int mul_dbl(unsigned long m[2])
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static bool_t mul_dbl(unsigned long m[2])
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{
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int rc;
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bool_t rc;
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asm ( "mul %4; seto %b2"
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: "=a" (m[0]), "=d" (m[1]), "=q" (rc)
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: "0" (m[0]), "1" (m[1]), "2" (0) );
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@@ -742,9 +742,9 @@ static int mul_dbl(unsigned long m[2])
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* IN: Multiplicand=m[0], Multiplier=m[1]
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* OUT: Return CF/OF (overflow status); Result=m[1]:m[0]
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*/
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static int imul_dbl(unsigned long m[2])
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static bool_t imul_dbl(unsigned long m[2])
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{
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int rc;
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bool_t rc;
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asm ( "imul %4; seto %b2"
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: "=a" (m[0]), "=d" (m[1]), "=q" (rc)
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: "0" (m[0]), "1" (m[1]), "2" (0) );
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@@ -757,7 +757,7 @@ static int imul_dbl(unsigned long m[2])
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* OUT: Return 1: #DE
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* Return 0: Quotient=u[0], Remainder=u[1]
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*/
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static int div_dbl(unsigned long u[2], unsigned long v)
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static bool_t div_dbl(unsigned long u[2], unsigned long v)
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{
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if ( (v == 0) || (u[1] >= v) )
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return 1;
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@@ -775,9 +775,9 @@ static int div_dbl(unsigned long u[2], unsigned long v)
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* NB. We don't use idiv directly as it's moderately hard to work out
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* ahead of time whether it will #DE, which we cannot allow to happen.
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*/
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static int idiv_dbl(unsigned long u[2], unsigned long v)
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static bool_t idiv_dbl(unsigned long u[2], unsigned long v)
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{
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int negu = (long)u[1] < 0, negv = (long)v < 0;
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bool_t negu = (long)u[1] < 0, negv = (long)v < 0;
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/* u = abs(u) */
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if ( negu )
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@@ -809,7 +809,7 @@ static int idiv_dbl(unsigned long u[2], unsigned long v)
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return 0;
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}
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static int
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static bool_t
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test_cc(
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unsigned int condition, unsigned int flags)
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{
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@@ -932,7 +932,7 @@ static int ioport_access_check(
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return ops->inject_hw_exception(EXC_GP, 0, ctxt) ? : X86EMUL_EXCEPTION;
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}
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static int
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static bool_t
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in_realmode(
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struct x86_emulate_ctxt *ctxt,
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const struct x86_emulate_ops *ops)
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@@ -947,7 +947,7 @@ in_realmode(
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return (!rc && !(cr0 & CR0_PE));
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}
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static int
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static bool_t
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in_protmode(
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struct x86_emulate_ctxt *ctxt,
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const struct x86_emulate_ops *ops)
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@@ -1178,7 +1178,7 @@ decode_register(
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case 14: p = ®s->r14; break;
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case 15: p = ®s->r15; break;
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#endif
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default: p = NULL; break;
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default: BUG(); p = NULL; break;
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}
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return p;
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