forked from Minki/linux
microblaze: Simplify _debug_exception function
Keep together all arguments for send_sig function. Move returning address to delay slot which is executed. Remove additional send_sig loading. I am using IMM part of rtbd instruction with r0. old solution: addik r11, r0, send_sig rtbd r11, 0 nop new solution: rtbd r0, send_sig nop There is one instruction saving. Signed-off-by: Michal Simek <monstr@monstr.eu>
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@ -895,15 +895,12 @@ C_ENTRY(_debug_exception):
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swi r0, r1, PTO+PT_R0;
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tovirt(r1,r1)
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set_vms;
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addi r5, r0, SIGTRAP /* send the trap signal */
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add r6, r0, CURRENT_TASK; /* Get current task ptr into r11 */
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addk r7, r0, r0 /* 3rd param zero */
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set_vms;
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addik r11, r0, send_sig;
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dbtrap_call: rtbd r0, send_sig;
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addik r15, r0, dbtrap_call;
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dbtrap_call: rtbd r11, 0;
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nop;
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set_bip; /* Ints masked for state restore*/
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lwi r11, r1, PTO+PT_MODE;
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