1da1abe314
This is a big change: apart from removing LLVM 14 it also removes typed pointer support (which was only fully supported in LLVM up to version 14). This removes about 200 lines of code, but more importantly removes a ton of special cases for LLVM 14.
43 строки
1,2 КиБ
ArmAsm
43 строки
1,2 КиБ
ArmAsm
#define __tmp_reg__ r16
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#define __zero_reg__ r17
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; Startup code
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.section .text.__vector_RESET
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.global __vector_RESET
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__vector_RESET:
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clr __zero_reg__ ; this register is expected to be 0 by the C calling convention
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; Keep the stack pointer at the default location, which is RAMEND.
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; Initialize .data section.
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.section .text.__do_copy_data,"ax",@progbits
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.global __do_copy_data
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__do_copy_data:
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ldi xl, lo8(__data_start)
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ldi xh, hi8(__data_start)
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ldi yl, lo8(__data_end)
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ldi yh, hi8(__data_end)
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ldi zl, lo8(__data_load_start)
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ldi zh, hi8(__data_load_start)
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1: ; loop
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cp xl, yl ; if x == y
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cpc xh, yh
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breq 2f ; goto end
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ld r16, Z+ ; r0 = *(z++)
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st X+, r16 ; *(x++) = r0
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rjmp 1b ; goto loop
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2: ; end
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; Initialize .bss section.
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.section .text.__do_clear_bss,"ax",@progbits
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.global __do_clear_bss
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__do_clear_bss:
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ldi xl, lo8(__bss_start)
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ldi xh, hi8(__bss_start)
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ldi yl, lo8(__bss_end)
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1: ; loop
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cp xl, yl ; if x == y
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breq 2f ; goto end
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st X+, __zero_reg__ ; *(x++) = 0
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rjmp 1b ; goto loop
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2: ; end
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