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cpu: also save rN_bank registers at startup/exit
These are at least used on the CP to hold OS-related interrupt handler pointers (to handling routines).
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2 changed files with 19 additions and 0 deletions
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@ -28,6 +28,7 @@ typedef struct {
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uint32_t SR;
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uint32_t SR;
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uint32_t VBR;
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uint32_t VBR;
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uint32_t CPUOPM;
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uint32_t CPUOPM;
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uint32_t rN_bank[8];
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} cpu_state_t;
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} cpu_state_t;
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/* Direct Memory Access controller (see dma/dma.c) */
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/* Direct Memory Access controller (see dma/dma.c) */
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@ -45,6 +45,15 @@ static void hsave(cpu_state_t *s)
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s->CPUOPM = cpu_getCPUOPM();
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s->CPUOPM = cpu_getCPUOPM();
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s->SR = cpu_getSR().lword;
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s->SR = cpu_getSR().lword;
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}
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}
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__asm__("stc r0_bank, %0" : "=r"(s->rN_bank[0]));
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__asm__("stc r1_bank, %0" : "=r"(s->rN_bank[1]));
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__asm__("stc r2_bank, %0" : "=r"(s->rN_bank[2]));
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__asm__("stc r3_bank, %0" : "=r"(s->rN_bank[3]));
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__asm__("stc r4_bank, %0" : "=r"(s->rN_bank[4]));
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__asm__("stc r5_bank, %0" : "=r"(s->rN_bank[5]));
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__asm__("stc r6_bank, %0" : "=r"(s->rN_bank[6]));
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__asm__("stc r7_bank, %0" : "=r"(s->rN_bank[7]));
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}
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}
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static void hrestore(cpu_state_t const *s)
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static void hrestore(cpu_state_t const *s)
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@ -55,6 +64,15 @@ static void hrestore(cpu_state_t const *s)
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cpu_setCPUOPM(s->CPUOPM);
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cpu_setCPUOPM(s->CPUOPM);
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cpu_setSR((cpu_sr_t)s->SR);
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cpu_setSR((cpu_sr_t)s->SR);
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}
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}
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__asm__("ldc %0, r0_bank" :: "r"(s->rN_bank[0]));
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__asm__("ldc %0, r1_bank" :: "r"(s->rN_bank[1]));
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__asm__("ldc %0, r2_bank" :: "r"(s->rN_bank[2]));
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__asm__("ldc %0, r3_bank" :: "r"(s->rN_bank[3]));
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__asm__("ldc %0, r4_bank" :: "r"(s->rN_bank[4]));
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__asm__("ldc %0, r5_bank" :: "r"(s->rN_bank[5]));
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__asm__("ldc %0, r6_bank" :: "r"(s->rN_bank[6]));
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__asm__("ldc %0, r7_bank" :: "r"(s->rN_bank[7]));
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}
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}
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gint_driver_t drv_cpu = {
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gint_driver_t drv_cpu = {
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