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| author | Richard Henderson <richard.henderson@linaro.org> | 2018-05-22 19:36:27 -0700 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2018-07-03 00:05:28 +0900 |
| commit | 2acaa2331b96ee92f0df213784f9b6454c3d5edc (patch) | |
| tree | 9d7ab5c3ccdb64dd7e462810e81e63571ea2f4fa /target/openrisc/mmu.c | |
| parent | fd992ee7e3fb12aea888744313a2869c8848ef9d (diff) | |
| download | focaccia-qemu-2acaa2331b96ee92f0df213784f9b6454c3d5edc.tar.gz focaccia-qemu-2acaa2331b96ee92f0df213784f9b6454c3d5edc.zip | |
target/openrisc: Reduce tlb to a single dimension
While we had defines for *_WAYS, we didn't define more than 1. Reduce the complexity by eliminating this unused dimension. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'target/openrisc/mmu.c')
| -rw-r--r-- | target/openrisc/mmu.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/target/openrisc/mmu.c b/target/openrisc/mmu.c index 9b4b5cf04f..856969a7f2 100644 --- a/target/openrisc/mmu.c +++ b/target/openrisc/mmu.c @@ -43,19 +43,21 @@ static int get_phys_code(OpenRISCCPU *cpu, hwaddr *physical, int *prot, int vpn = address >> TARGET_PAGE_BITS; int idx = vpn & ITLB_MASK; int right = 0; + uint32_t mr = cpu->env.tlb.itlb[idx].mr; + uint32_t tr = cpu->env.tlb.itlb[idx].tr; - if ((cpu->env.tlb.itlb[0][idx].mr >> TARGET_PAGE_BITS) != vpn) { + if ((mr >> TARGET_PAGE_BITS) != vpn) { return TLBRET_NOMATCH; } - if (!(cpu->env.tlb.itlb[0][idx].mr & 1)) { + if (!(mr & 1)) { return TLBRET_INVALID; } if (supervisor) { - if (cpu->env.tlb.itlb[0][idx].tr & SXE) { + if (tr & SXE) { right |= PAGE_EXEC; } } else { - if (cpu->env.tlb.itlb[0][idx].tr & UXE) { + if (tr & UXE) { right |= PAGE_EXEC; } } @@ -63,8 +65,7 @@ static int get_phys_code(OpenRISCCPU *cpu, hwaddr *physical, int *prot, return TLBRET_BADADDR; } - *physical = (cpu->env.tlb.itlb[0][idx].tr & TARGET_PAGE_MASK) | - (address & (TARGET_PAGE_SIZE-1)); + *physical = (tr & TARGET_PAGE_MASK) | (address & ~TARGET_PAGE_MASK); *prot = right; return TLBRET_MATCH; } @@ -75,25 +76,27 @@ static int get_phys_data(OpenRISCCPU *cpu, hwaddr *physical, int *prot, int vpn = address >> TARGET_PAGE_BITS; int idx = vpn & DTLB_MASK; int right = 0; + uint32_t mr = cpu->env.tlb.dtlb[idx].mr; + uint32_t tr = cpu->env.tlb.dtlb[idx].tr; - if ((cpu->env.tlb.dtlb[0][idx].mr >> TARGET_PAGE_BITS) != vpn) { + if ((mr >> TARGET_PAGE_BITS) != vpn) { return TLBRET_NOMATCH; } - if (!(cpu->env.tlb.dtlb[0][idx].mr & 1)) { + if (!(mr & 1)) { return TLBRET_INVALID; } if (supervisor) { - if (cpu->env.tlb.dtlb[0][idx].tr & SRE) { + if (tr & SRE) { right |= PAGE_READ; } - if (cpu->env.tlb.dtlb[0][idx].tr & SWE) { + if (tr & SWE) { right |= PAGE_WRITE; } } else { - if (cpu->env.tlb.dtlb[0][idx].tr & URE) { + if (tr & URE) { right |= PAGE_READ; } - if (cpu->env.tlb.dtlb[0][idx].tr & UWE) { + if (tr & UWE) { right |= PAGE_WRITE; } } @@ -105,8 +108,7 @@ static int get_phys_data(OpenRISCCPU *cpu, hwaddr *physical, int *prot, return TLBRET_BADADDR; } - *physical = (cpu->env.tlb.dtlb[0][idx].tr & TARGET_PAGE_MASK) | - (address & (TARGET_PAGE_SIZE-1)); + *physical = (tr & TARGET_PAGE_MASK) | (address & ~TARGET_PAGE_MASK); *prot = right; return TLBRET_MATCH; } |