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.
42 строки
909 Б
ArmAsm
42 строки
909 Б
ArmAsm
#if __riscv_xlen==64
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#define REGSIZE 8
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#define SREG sd
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#define LREG ld
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#else
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#define REGSIZE 4
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#define SREG sw
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#define LREG lw
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#endif
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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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// Push callee-saved registers onto the stack.
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addi sp, sp, -13*REGSIZE
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SREG ra, 0*REGSIZE(sp)
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SREG s11, 1*REGSIZE(sp)
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SREG s10, 2*REGSIZE(sp)
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SREG s9, 3*REGSIZE(sp)
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SREG s8, 4*REGSIZE(sp)
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SREG s7, 5*REGSIZE(sp)
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SREG s6, 6*REGSIZE(sp)
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SREG s5, 7*REGSIZE(sp)
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SREG s4, 8*REGSIZE(sp)
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SREG s3, 9*REGSIZE(sp)
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SREG s2, 10*REGSIZE(sp)
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SREG s1, 11*REGSIZE(sp)
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SREG s0, 12*REGSIZE(sp)
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// Scan the stack.
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mv a0, sp
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call tinygo_scanstack
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// Restore return address.
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LREG ra, 0(sp)
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// Restore stack state.
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addi sp, sp, 13*REGSIZE
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// Return to the caller.
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ret
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