PROBE-FILE on symlinks to pipes inside /proc on Linux.

[sbcl.git] / src / runtime / mips-arch.c

diff --git a/src/runtime/mips-arch.c b/src/runtime/mips-arch.c
index ac3b0ff..72ac15a 100644 (file)
--- a/src/runtime/mips-arch.c
+++ b/src/runtime/mips-arch.c
@@ -264,18 +264,7 @@ arch_internal_error_arguments(os_context_t *context)
 boolean
 arch_pseudo_atomic_atomic(os_context_t *context)
 {
-    /* FIXME: this foreign_function_call_active test is dubious at
-     * best. If a foreign call is made in a pseudo atomic section
-     * (?) or more likely a pseudo atomic section is in a foreign
-     * call then an interrupt is executed immediately. Maybe it
-     * has to do with C code not maintaining pseudo atomic
-     * properly. MG - 2005-08-10
-     *
-     * The foreign_function_call_active used to live at each call-site
-     * to arch_pseudo_atomic_atomic, but this seems clearer.
-     * --NS 2007-05-15 */
-    return (!foreign_function_call_active)
-        && os_context_register(context, reg_ALLOC) & 1;
+    return os_context_register(context, reg_ALLOC) & 1;
 }
 
 void
@@ -400,16 +389,15 @@ arch_handle_after_breakpoint(os_context_t *context)
 void
 arch_handle_single_step_trap(os_context_t *context, int trap)
 {
-    unsigned int code = *((u32 *)(*os_context_pc_addr(context)));
+    unsigned int code = *((u32 *)(os_context_pc(context)));
     int register_offset = code >> 11 & 0x1f;
     handle_single_step_trap(context, trap, register_offset);
     arch_skip_instruction(context);
 }
 
 static void
-sigtrap_handler(int signal, siginfo_t *info, void *void_context)
+sigtrap_handler(int signal, siginfo_t *info, os_context_t *context)
 {
-    os_context_t *context = arch_os_get_context(&void_context);
     unsigned int code = (os_context_insn(context) >> 6) & 0xfffff;
     /* FIXME: This magic number is pseudo-atomic-trap from parms.lisp.
      * Genesis should provide the proper #define, but it specialcases
@@ -426,9 +414,8 @@ sigtrap_handler(int signal, siginfo_t *info, void *void_context)
 #define FIXNUM_VALUE(lispobj) (((int)lispobj) >> N_FIXNUM_TAG_BITS)
 
 static void
-sigfpe_handler(int signal, siginfo_t *info, void *void_context)
+sigfpe_handler(int signal, siginfo_t *info, os_context_t *context)
 {
-    os_context_t *context = arch_os_get_context(&void_context);
     unsigned int bad_inst = os_context_insn(context);
     unsigned int op, rs, rt, rd, funct, dest = 32;
     int immed;
@@ -484,6 +471,22 @@ sigfpe_handler(int signal, siginfo_t *info, void *void_context)
     arch_skip_instruction(context);
 }
 
+unsigned int
+arch_get_fp_control(void)
+{
+    register unsigned int ret asm("$2");
+
+    __asm__ __volatile__ ("cfc1 %0, $31" : "=r" (ret));
+
+    return ret;
+}
+
+void
+arch_set_fp_control(unsigned int fp)
+{
+    __asm__ __volatile__ ("ctc1 %0, $31" :: "r" (fp));
+}
+
 void
 arch_install_interrupt_handlers(void)
 {