diff options
| -rw-r--r-- | py/nlr.h | 9 | ||||
| -rw-r--r-- | py/nlrthumb.c | 10 |
2 files changed, 18 insertions, 1 deletions
@@ -54,7 +54,14 @@ #endif #elif defined(__thumb2__) || defined(__thumb__) || defined(__arm__) #define MICROPY_NLR_THUMB (1) - #define MICROPY_NLR_NUM_REGS (10) + #if defined(__SOFTFP__) + #define MICROPY_NLR_NUM_REGS (10) + #else + // With hardware FP registers s16-s31 are callee save so in principle + // should be saved and restored by the NLR code. gcc only uses s16-s21 + // so only save/restore those as an optimisation. + #define MICROPY_NLR_NUM_REGS (10 + 6) + #endif #elif defined(__xtensa__) #define MICROPY_NLR_XTENSA (1) #define MICROPY_NLR_NUM_REGS (10) diff --git a/py/nlrthumb.c b/py/nlrthumb.c index 99061e62cd..32fa6b1176 100644 --- a/py/nlrthumb.c +++ b/py/nlrthumb.c @@ -63,6 +63,11 @@ __attribute__((naked)) unsigned int nlr_push(nlr_buf_t *nlr) { "str r10, [r0, #36] \n" // store r10 into nlr_buf "str r11, [r0, #40] \n" // store r11 into nlr_buf "str r13, [r0, #44] \n" // store r13=sp into nlr_buf + #if MICROPY_NLR_NUM_REGS == 16 + "vstr d8, [r0, #48] \n" // store s16-s17 into nlr_buf + "vstr d9, [r0, #56] \n" // store s18-s19 into nlr_buf + "vstr d10, [r0, #64] \n" // store s20-s21 into nlr_buf + #endif "str lr, [r0, #8] \n" // store lr into nlr_buf #endif @@ -116,6 +121,11 @@ NORETURN void nlr_jump(void *val) { "ldr r10, [r0, #36] \n" // load r10 from nlr_buf "ldr r11, [r0, #40] \n" // load r11 from nlr_buf "ldr r13, [r0, #44] \n" // load r13=sp from nlr_buf + #if MICROPY_NLR_NUM_REGS == 16 + "vldr d8, [r0, #48] \n" // load s16-s17 from nlr_buf + "vldr d9, [r0, #56] \n" // load s18-s19 from nlr_buf + "vldr d10, [r0, #64] \n" // load s20-s21 from nlr_buf + #endif "ldr lr, [r0, #8] \n" // load lr from nlr_buf #endif "movs r0, #1 \n" // return 1, non-local return |