From 6e43e8e9a59569b573628c84d68af26f284c8c4e Mon Sep 17 00:00:00 2001 From: Daniel Friesel Date: Fri, 24 May 2019 15:05:49 +0200 Subject: MSP430: save & restore entire SRAM to/from FRAM --- src/app/transactiontest/util.S | 46 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/app/transactiontest/util.S (limited to 'src/app/transactiontest/util.S') diff --git a/src/app/transactiontest/util.S b/src/app/transactiontest/util.S new file mode 100644 index 0000000..bf2530d --- /dev/null +++ b/src/app/transactiontest/util.S @@ -0,0 +1,46 @@ +.global asm_save_toc +.global asm_load_toc + +stack_backup: + .space 2048 + +sp_backup: + .space 2 + +asm_save_toc: + .irp reg,4,5,6,7,8,9,10,11 + push r\reg + .endr + + mov r1, &sp_backup + + mov #1c00h, r10 + mov #stack_backup, r11 + +save_sram_word: + mov @r10+, 0(r11) + add #2, r11 + cmp #1c00h+2048, r10 + jlo save_sram_word + + pop r11 + pop r10 + add #12, r1 + ret + +asm_load_toc: + mov #stack_backup, r10 + mov #1c00h, r11 + +load_sram_word: + mov @r10+, 0(r11) + add #2, r11 + cmp #1c00h+2048, r11 + jlo load_sram_word + + mov &sp_backup, r1 + .irp reg,11,10,9,8,7,6,5,4 + pop r\reg + .endr + + ret \ No newline at end of file -- cgit v1.2.3