0b930489b8
In order to use DWARF unwinder info the frame register has to contain a valid value. Whilst GCC takes care of this for C code, we have to do it ourselves for assembly. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
122 lines
1.8 KiB
ArmAsm
122 lines
1.8 KiB
ArmAsm
! entry.S macro define
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.macro cli
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stc sr, r0
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or #0xf0, r0
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ldc r0, sr
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.endm
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.macro sti
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mov #0xf0, r11
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extu.b r11, r11
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not r11, r11
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stc sr, r10
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and r11, r10
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#ifdef CONFIG_CPU_HAS_SR_RB
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stc k_g_imask, r11
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or r11, r10
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#endif
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ldc r10, sr
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.endm
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.macro get_current_thread_info, ti, tmp
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#ifdef CONFIG_CPU_HAS_SR_RB
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stc r7_bank, \ti
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#else
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mov #((THREAD_SIZE - 1) >> 10) ^ 0xff, \tmp
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shll8 \tmp
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shll2 \tmp
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mov r15, \ti
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and \tmp, \ti
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#endif
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.endm
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#ifdef CONFIG_TRACE_IRQFLAGS
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.macro TRACE_IRQS_ON
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mov.l r0, @-r15
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mov.l r1, @-r15
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mov.l r2, @-r15
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mov.l r3, @-r15
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mov.l r4, @-r15
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mov.l r5, @-r15
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mov.l r6, @-r15
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mov.l r7, @-r15
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mov.l 7834f, r0
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jsr @r0
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nop
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mov.l @r15+, r7
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mov.l @r15+, r6
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mov.l @r15+, r5
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mov.l @r15+, r4
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mov.l @r15+, r3
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mov.l @r15+, r2
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mov.l @r15+, r1
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mov.l @r15+, r0
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mov.l 7834f, r0
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bra 7835f
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nop
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.balign 4
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7834: .long trace_hardirqs_on
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7835:
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.endm
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.macro TRACE_IRQS_OFF
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mov.l r0, @-r15
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mov.l r1, @-r15
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mov.l r2, @-r15
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mov.l r3, @-r15
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mov.l r4, @-r15
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mov.l r5, @-r15
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mov.l r6, @-r15
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mov.l r7, @-r15
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mov.l 7834f, r0
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jsr @r0
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nop
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mov.l @r15+, r7
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mov.l @r15+, r6
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mov.l @r15+, r5
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mov.l @r15+, r4
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mov.l @r15+, r3
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mov.l @r15+, r2
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mov.l @r15+, r1
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mov.l @r15+, r0
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mov.l 7834f, r0
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bra 7835f
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nop
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.balign 4
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7834: .long trace_hardirqs_off
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7835:
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.endm
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#else
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.macro TRACE_IRQS_ON
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.endm
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.macro TRACE_IRQS_OFF
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.endm
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#endif
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#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH4)
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# define PREF(x) pref @x
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#else
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# define PREF(x) nop
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#endif
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/*
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* Macro for use within assembly. Because the DWARF unwinder
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* needs to use the frame register to unwind the stack, we
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* need to setup r14 with the value of the stack pointer as
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* the return address is usually on the stack somewhere.
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*/
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.macro setup_frame_reg
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#ifdef CONFIG_DWARF_UNWINDER
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mov r15, r14
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#endif
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.endm
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