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https://github.com/tinygo-org/tinygo.git
synced 2026-08-04 02:57:46 +00:00
Ayke van Laethem
bfa29f17da
Instead of putting tinygo_scanCurrentStack in scheduler_*.S files, put
them in dedicated files. The function tinygo_scanCurrentStack has
nothing to do with scheduling and so doesn't belong there. Additionally,
while scheduling code is made specific for the Cortex-M, the
tinygo_scanCurrentStack is generic to all ARM targets so this move
removes some duplication there.
Specifically:
* tinygo_scanCurrentStack is moved out of scheduler_cortexm.S as it
isn't really part of the scheduler. It is now gc_arm.S.
* Same for the AVR target.
* Same for the RISCV target.
* scheduler_gba.S is removed, using gc_arm.S instead as it only
contains tinygo_scanCurrentStack.
34 lines
785 B
ArmAsm
34 lines
785 B
ArmAsm
// Only generate .debug_frame, don't generate .eh_frame.
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.cfi_sections .debug_frame
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.section .text.tinygo_scanCurrentStack
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.global tinygo_scanCurrentStack
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.type tinygo_scanCurrentStack, %function
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tinygo_scanCurrentStack:
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.cfi_startproc
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// Save callee-saved registers onto the stack.
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#if defined(__thumb2__)
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push {r4-r11, lr}
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.cfi_def_cfa_offset 9*4
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#else
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mov r0, r8
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mov r1, r9
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mov r2, r10
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mov r3, r11
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push {r0-r3, lr}
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.cfi_def_cfa_offset 5*4
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push {r4-r7}
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.cfi_def_cfa_offset 4*4
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#endif
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// Scan the stack.
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mov r0, sp
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bl tinygo_scanstack
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// Restore stack state and return.
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add sp, #32
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.cfi_def_cfa_offset 1*4
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pop {pc}
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.cfi_endproc
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.size tinygo_scanCurrentStack, .-tinygo_scanCurrentStack
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