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Add Svrsw60t59b extension #1936

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Add Svrsw60t59b extension #1936

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08f10c5
Add Svrsw60t59b extension
ved-rivos Mar 15, 2025
cd3dea8
Update with generated encoding.h
ved-rivos Mar 22, 2025
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3 changes: 2 additions & 1 deletion riscv/encoding.h
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Original file line number Diff line number Diff line change
Expand Up @@ -458,7 +458,8 @@
#define PTE_A 0x040 /* Accessed */
#define PTE_D 0x080 /* Dirty */
#define PTE_SOFT 0x300 /* Reserved for Software */
#define PTE_RSVD 0x1FC0000000000000 /* Reserved for future standard use */
#define PTE_SVRSW60T59B 0x1800000000000000 /* Svrsw60t59b: Reserved for software use */
#define PTE_RSVD 0x07C0000000000000 /* Reserved for future standard use */
#define PTE_PBMT 0x6000000000000000 /* Svpbmt: Page-based memory types */
#define PTE_N 0x8000000000000000 /* Svnapot: NAPOT translation contiguity */
#define PTE_ATTR 0xFFC0000000000000 /* All attributes and reserved bits */
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1 change: 1 addition & 0 deletions riscv/isa_parser.h
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Expand Up @@ -43,6 +43,7 @@ typedef enum {
EXT_SVNAPOT,
EXT_SVPBMT,
EXT_SVINVAL,
EXT_SVRSW60T59B,
EXT_ZDINX,
EXT_ZFA,
EXT_ZFBFMIN,
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4 changes: 4 additions & 0 deletions riscv/mmu.cc
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Expand Up @@ -435,6 +435,8 @@ reg_t mmu_t::s2xlate(reg_t gva, reg_t gpa, access_type type, access_type trap_ty

if (pte & PTE_RSVD) {
break;
} else if (!proc->extension_enabled(EXT_SVRSW60T59B) && (pte & PTE_SVRSW60T59B)) {
break;
} else if (!proc->extension_enabled(EXT_SVNAPOT) && (pte & PTE_N)) {
break;
} else if (!pbmte && (pte & PTE_PBMT)) {
Expand Down Expand Up @@ -539,6 +541,8 @@ reg_t mmu_t::walk(mem_access_info_t access_info)

if (pte & PTE_RSVD) {
break;
} else if (!proc->extension_enabled(EXT_SVRSW60T59B) && (pte & PTE_SVRSW60T59B)) {
break;
} else if (!proc->extension_enabled(EXT_SVNAPOT) && (pte & PTE_N)) {
break;
} else if (!pbmte && (pte & PTE_PBMT)) {
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