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NLR and Python exceptions work on the board.

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This commit is contained in:
Damien
2013-10-16 00:46:39 +01:00
parent c9f91976e1
commit 152568bcb6
4 changed files with 182 additions and 28 deletions
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10
py/nlr.h
View File

@@ -3,9 +3,9 @@
#include <limits.h>
#ifndef __WORDSIZE
#error __WORDSIZE needs to be defined
#endif
//#ifndef __WORDSIZE
//#error __WORDSIZE needs to be defined
//#endif
typedef struct _nlr_buf_t nlr_buf_t;
struct _nlr_buf_t {
@@ -17,7 +17,9 @@ struct _nlr_buf_t {
#elif __WORDSIZE == 64
void *regs[8];
#else
#error Unsupported __WORDSIZE
// hack for thumb
void *regs[10];
//#error Unsupported __WORDSIZE
#endif
};

91
py/nlrthumb.s Normal file
View File

@@ -0,0 +1,91 @@
@ thumb callee save: bx, bp, sp, r12, r14, r14, r15
.syntax unified
.cpu cortex-m4
.thumb
.text
.align 2
@ uint nlr_push(r0=nlr_buf_t *nlr)
.global nlr_push
.thumb
.thumb_func
.type nlr_push, %function
nlr_push:
str lr, [r0, #8] @ store lr into nlr_buf
str r4, [r0, #12] @ store r4 into nlr_buf
str r5, [r0, #16] @ store r5 into nlr_buf
str r6, [r0, #20] @ store r6 into nlr_buf
str r7, [r0, #24] @ store r7 into nlr_buf
str r8, [r0, #28] @ store r8 into nlr_buf
str r9, [r0, #32] @ store r9 into nlr_buf
str r10, [r0, #36] @ store r10 into nlr_buf
str r11, [r0, #40] @ store r11 into nlr_buf
str r13, [r0, #44] @ store r13=sp into nlr_buf
ldr r3, .L2 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
str r2, [r0] @ store nlr_top into nlr_buf
str r0, [r3] @ store nlr_buf into nlr_top (to link list)
movs r0, #0 @ return 0, normal return
bx lr @ return
.align 2
.L2:
.word .LANCHOR0
.size nlr_push, .-nlr_push
@ void nlr_pop()
.global nlr_pop
.thumb
.thumb_func
.type nlr_pop, %function
nlr_pop:
ldr r3, .L5 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
ldr r2, [r2] @ load prev nlr_buf
str r2, [r3] @ store prev nlr_buf to nlr_top (to unlink list)
bx lr @ return
.align 2
.L5:
.word .LANCHOR0
.size nlr_pop, .-nlr_pop
@ void nlr_jump(r0=uint val)
.global nlr_jump
.thumb
.thumb_func
.type nlr_jump, %function
nlr_jump:
ldr r3, .L2 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
str r0, [r2, #4] @ store return value
ldr r0, [r2] @ load prev nlr_buf
str r0, [r3] @ store prev nol_buf into nlr_top (to unlink list)
ldr lr, [r2, #8] @ load lr from nlr_buf
ldr r4, [r2, #12] @ load r4 from nlr_buf
ldr r5, [r2, #16] @ load r5 from nlr_buf
ldr r6, [r2, #20] @ load r6 from nlr_buf
ldr r7, [r2, #24] @ load r7 from nlr_buf
ldr r8, [r2, #28] @ load r8 from nlr_buf
ldr r9, [r2, #32] @ load r9 from nlr_buf
ldr r10, [r2, #36] @ load r10 from nlr_buf
ldr r11, [r2, #40] @ load r11 from nlr_buf
ldr r13, [r2, #44] @ load r13=sp from nlr_buf
movs r0, #1 @ return 1, non-local return
bx lr @ return
.align 2
.L6:
.word .LANCHOR0
.size nlr_jump, .-nlr_jump
@ local variable nlr_top
.bss
.align 2
.set .LANCHOR0,. + 0
.type nlr_top, %object
.size nlr_top, 4
nlr_top:
.space 4