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Restore user-owned bits from PSW after a signal handler, instead of

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copying complete PSW after signal handler.

This fixes a psw corruption bug reported by Jens de Smit <jst260@few.vu.nl>.
This commit is contained in:
Ben Gras
2007-05-08 15:43:00 +00:00
parent 56a68dc32b
commit b00f287449
2 changed files with 17 additions and 10 deletions
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22
include/ibm/cpu.h
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@@ -1,15 +1,19 @@
#ifndef _IBM_CPU_H
#define _IBM_CPU_H 1
#define X86_FLAG_C (1L << 0) /* Carry */
#define X86_FLAG_P (1L << 2) /* Parity */
#define X86_FLAG_A (1L << 4) /* Aux. carry */
#define X86_FLAG_Z (1L << 6) /* Zero */
#define X86_FLAG_S (1L << 7) /* Sign */
#define X86_FLAG_C (1L << 0) /* S Carry */
#define X86_FLAG_P (1L << 2) /* S Parity */
#define X86_FLAG_A (1L << 4) /* S Aux. carry */
#define X86_FLAG_Z (1L << 6) /* S Zero */
#define X86_FLAG_S (1L << 7) /* S Sign */
#define X86_FLAG_T (1L << 8) /* Trap */
#define X86_FLAG_I (1L << 9) /* Interrupt */
#define X86_FLAG_D (1L << 10) /* Direction */
#define X86_FLAG_O (1L << 11) /* Overflow */
#define X86_FLAG_T (1L << 8) /* X Trap */
#define X86_FLAG_I (1L << 9) /* X Interrupt */
#define X86_FLAG_D (1L << 10) /* C Direction */
#define X86_FLAG_O (1L << 11) /* S Overflow */
/* User flags are S (Status) and C (Control) flags. */
#define X86_FLAGS_USER (X86_FLAG_C | X86_FLAG_P | X86_FLAG_A | X86_FLAG_Z | \
X86_FLAG_S | X86_FLAG_D | X86_FLAG_O)
#endif